{"id":28086,"date":"2026-04-09T18:19:28","date_gmt":"2026-04-09T10:19:28","guid":{"rendered":"https:\/\/alllandpipes.com\/?p=28086"},"modified":"2026-04-09T18:30:39","modified_gmt":"2026-04-09T10:30:39","slug":"understanding-nominal-diameter-in-steel-pipes-nb-vs-nps-inner-diameter","status":"publish","type":"post","link":"https:\/\/alllandpipes.com\/ar\/blogs\/understanding-nominal-diameter-in-steel-pipes-nb-vs-nps-inner-diameter.html","title":{"rendered":"\u0641\u0647\u0645 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0627\u0633\u0645\u064a \u0641\u064a \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629: NB \u0645\u0642\u0627\u0628\u0644 NPS\u060c \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a\u060c \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"28086\" class=\"elementor elementor-28086\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6e15e35 e-flex e-con-boxed e-con e-parent\" data-id=\"6e15e35\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5cd85d5d elementor-widget elementor-widget-text-editor\" data-id=\"5cd85d5d\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\n<h2 class=\"wp-block-heading\"><strong>\u0645\u0627 \u0647\u0648 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0627\u0633\u0645\u064a (ND) \u0641\u064a \u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0635\u0644\u0628\u061f<\/strong><\/h2>\n\n<p class=\"wp-block-paragraph\">\u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0627\u0633\u0645\u064a (ND) \u0647\u0648 \u0645\u0635\u0637\u0644\u062d \u0645\u0639\u062a\u0631\u0641 \u0628\u0647 \u0639\u0627\u0644\u0645\u064a\u064b\u0627 \u064a\u0633\u062a\u062e\u062f\u0645 \u0644\u062a\u062d\u062f\u064a\u062f \u0623\u062d\u062c\u0627\u0645 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0648\u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629 \u0648\u0627\u0644\u0635\u0645\u0627\u0645\u0627\u062a \u0648\u0627\u0644\u0645\u0643\u0648\u0646\u0627\u062a \u0627\u0644\u0623\u062e\u0631\u0649.<\/p>\n\n<p class=\"wp-block-paragraph\">\u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0627\u0633\u0645\u064a (ND) \u0644\u064a\u0633 \u0628\u064f\u0639\u062f\u064b\u0627 \u0641\u0639\u0644\u064a\u064b\u0627\u061b \u0625\u0646\u0647 \u0628\u0628\u0633\u0627\u0637\u0629 \u0642\u064a\u0645\u0629 \u0639\u062f\u062f\u064a\u0629 \u062a\u0633\u062a\u062e\u062f\u0645 \u0644\u0648\u0636\u0639 \u0627\u0644\u0639\u0644\u0627\u0645\u0627\u062a \u0627\u0644\u0645\u0648\u062d\u062f\u0629 \u0648\u0644\u062a\u0633\u0647\u064a\u0644 \u0627\u0644\u0627\u062e\u062a\u064a\u0627\u0631.<\/p>\n\n<h2 class=\"wp-block-heading\"><strong>\u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0627\u0633\u0645\u064a \u0645\u0642\u0627\u0628\u0644 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a<\/strong><\/h2>\n\n<p class=\"wp-block-paragraph\">\u064a\u0634\u064a\u0631 ND \u0625\u0644\u0649 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0627\u0633\u0645\u064a\u060c \u0627\u0644\u0630\u064a \u064a\u0642\u0627\u0633 \u0639\u0627\u062f\u0629\u064b \u0628\u0627\u0644\u0628\u0648\u0635\u0629 \u0623\u0648 \u0627\u0644\u0645\u0644\u064a\u0645\u062a\u0631\u060c \u0648\u064a\u0645\u062b\u0644 \u0627\u0644\u062d\u062c\u0645 \u0627\u0644\u0627\u0633\u0645\u064a \u0644\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0623\u0648 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629\u060c \u0648\u0644\u064a\u0633 \u0627\u0644\u0623\u0628\u0639\u0627\u062f \u0627\u0644\u0641\u0639\u0644\u064a\u0629.<\/p>\n\n<p class=\"wp-block-paragraph\">\u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a (ID) \u0647\u0648 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0641\u0639\u0644\u064a \u0627\u0644\u062d\u0627\u0645\u0644 \u0644\u0644\u0633\u0648\u0627\u0626\u0644 \u0644\u0623\u0646\u0628\u0648\u0628 \u0623\u0648 \u0623\u0646\u0628\u0648\u0628 \u0641\u0648\u0644\u0627\u0630\u064a \u0623\u0648 \u0623\u0646\u0628\u0648\u0628 \u0641\u0648\u0644\u0627\u0630\u064a \u0623\u0648 \u062a\u0631\u0643\u064a\u0628 \u0623\u0646\u0628\u0648\u0628\u060c \u0648\u064a\u0642\u0627\u0633 \u0628\u0627\u0644\u0628\u0648\u0635\u0629 \u0623\u0648 \u0627\u0644\u0645\u0644\u064a\u0645\u062a\u0631. \u0648\u0647\u0648 \u0628\u064f\u0639\u062f \u0645\u0627\u062f\u064a \u064a\u0645\u0643\u0646 \u0642\u064a\u0627\u0633\u0647.<\/p>\n\n<p class=\"wp-block-paragraph\">\u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629\u060c \u0639\u0646\u062f \u0646\u0641\u0633 \u0627\u0644\u0636\u063a\u0637\u060c \u0643\u0644\u0645\u0627 \u0643\u0627\u0646 \u0627\u0644\u0645\u0639\u0631\u0641 \u0623\u0643\u0628\u0631\u060c \u0632\u0627\u062f \u062d\u062c\u0645 \u0627\u0644\u0633\u0627\u0626\u0644 \u0627\u0644\u0630\u064a \u064a\u0645\u0643\u0646 \u0623\u0646 \u064a\u0645\u0631 \u0639\u0628\u0631\u0647\u0627 \u0641\u064a \u0643\u0644 \u0648\u062d\u062f\u0629 \u0632\u0645\u0646\u064a\u0629.<\/p>\n\n<h2 class=\"wp-block-heading\"><strong>\u0627\u0644\u0641\u0631\u0642 \u0628\u064a\u0646 NB \u0648 NPS<\/strong><\/h2>\n\n<h3 class=\"wp-block-heading\"><strong>\u0645\u0627 \u0647\u0648 NB (\u0627\u0644\u062a\u062c\u0648\u064a\u0641 \u0627\u0644\u0627\u0633\u0645\u064a)\u061f<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">\u064a\u0631\u0645\u0632 NB \u0625\u0644\u0649 \u0627\u0644\u062a\u062c\u0648\u064a\u0641 \u0627\u0644\u0627\u0633\u0645\u064a \u0648\u064a\u0633\u062a\u062e\u062f\u0645 \u0628\u0634\u0643\u0644 \u0623\u0633\u0627\u0633\u064a \u0641\u064a \u0623\u0648\u0631\u0648\u0628\u0627 \u0623\u0648 \u0643\u0645\u0639\u064a\u0627\u0631 \u062f\u0648\u0644\u064a. \u064a\u0633\u062a\u062e\u062f\u0645 NB \u0628\u0634\u0643\u0644 \u0623\u0633\u0627\u0633\u064a \u0641\u064a \u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0633\u0648\u0627\u0626\u0644 \u0644\u0644\u0625\u0634\u0627\u0631\u0629 \u0625\u0644\u0649 \u0642\u0637\u0631 \u0627\u0644\u0623\u0646\u0628\u0648\u0628. \u0648\u0647\u0648 \u0644\u0627 \u064a\u0645\u062b\u0644 \u0627\u0644\u0623\u0628\u0639\u0627\u062f \u0627\u0644\u0645\u0627\u062f\u064a\u0629 \u0627\u0644\u0641\u0639\u0644\u064a\u0629\u060c \u0648\u0639\u0627\u062f\u0629 \u0645\u0627 \u064a\u062a\u0645 \u0627\u0644\u062a\u0639\u0628\u064a\u0631 \u0639\u0646 \u0627\u0644\u0648\u062d\u062f\u0629 \u0628\u0627\u0644\u0645\u0644\u0644\u064a\u0645\u062a\u0631.<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>\u0645\u0627 \u0647\u0648 NPS (\u062d\u062c\u0645 \u0627\u0644\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u0627\u0633\u0645\u064a)\u061f<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">\u064a\u0631\u0645\u0632 NPS \u0625\u0644\u0649 \u0645\u0642\u0627\u0633 \u0627\u0644\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u0627\u0633\u0645\u064a\u060c \u0648\u0647\u0648 \u0645\u0635\u0637\u0644\u062d \u0634\u0627\u0626\u0639 \u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0641\u064a \u0633\u0648\u0642 \u0623\u0645\u0631\u064a\u0643\u0627 \u0627\u0644\u0634\u0645\u0627\u0644\u064a\u0629. \u0648\u0647\u0648 \u064a\u0634\u064a\u0631 \u0625\u0644\u0649 \u062a\u0635\u0646\u064a\u0641 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062e\u0627\u0631\u062c\u064a \u0627\u0644\u0627\u0633\u0645\u064a \u0644\u0644\u0623\u0646\u0628\u0648\u0628 \u0648\u064a\u0633\u062a\u062e\u062f\u0645 \u0641\u064a \u0645\u0639\u0627\u064a\u064a\u0631 \u062a\u062d\u062c\u064a\u0645 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629 \u0648\u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629\u060c \u0645\u0639 \u0625\u0639\u0637\u0627\u0621 \u0627\u0644\u0642\u064a\u0627\u0633\u0627\u062a \u0628\u0627\u0644\u0628\u0648\u0635\u0629. \u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c \u0627\u0644\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a NPS 2 (\u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0627\u0633\u0645\u064a 2) \u064a\u0628\u0644\u063a \u0642\u0637\u0631\u0647 \u0627\u0644\u062e\u0627\u0631\u062c\u064a \u0627\u0644\u0641\u0639\u0644\u064a 2.375 \u0628\u0648\u0635\u0629 (\u224860.3 \u0645\u0645).<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>\u0645\u0642\u0627\u0631\u0646\u0629 \u0628\u064a\u0646 NB \u0648 NPS<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">\u064a\u0633\u062a\u062e\u062f\u0645 NB \u0628\u0634\u0643\u0644 \u0623\u0643\u062b\u0631 \u0634\u064a\u0648\u0639\u064b\u0627 \u0644\u0623\u0642\u0637\u0627\u0631 \u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0633\u0648\u0627\u0626\u0644 \u0648\u064a\u0633\u062a\u062e\u062f\u0645 \u0628\u0634\u0643\u0644 \u0623\u0633\u0627\u0633\u064a \u0641\u064a \u062a\u0635\u0645\u064a\u0645 \u0647\u0646\u062f\u0633\u0629 \u0627\u0644\u0633\u0648\u0627\u0626\u0644. \u062a\u0631\u0643\u0632 NPS \u0628\u0634\u0643\u0644 \u0623\u0643\u0628\u0631 \u0639\u0644\u0649 \u0623\u0628\u0639\u0627\u062f \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629 \u0648\u062f\u0631\u062c\u0627\u062a \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629 \u0627\u0644\u0642\u064a\u0627\u0633\u064a\u0629\u060c \u0648\u062a\u0633\u062a\u062e\u062f\u0645 \u0641\u064a \u062a\u0635\u0646\u064a\u0639 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0648\u0627\u062e\u062a\u064a\u0627\u0631\u0647\u0627.<\/p>\n\n<p class=\"wp-block-paragraph\">\u0648\u0645\u0639 \u0630\u0644\u0643\u060c \u0641\u0625\u0646 NB \u0647\u0648 \u0641\u064a \u0627\u0644\u0623\u0633\u0627\u0633 \u0646\u0641\u0633 \u0645\u0641\u0647\u0648\u0645 NPS (\u0627\u0644\u062d\u062c\u0645 \u0627\u0644\u0627\u0633\u0645\u064a \u0644\u0644\u0623\u0646\u0627\u0628\u064a\u0628)\u061b \u0641\u0643\u0644\u0627\u0647\u0645\u0627 \u064a\u0634\u064a\u0631 \u0625\u0644\u0649 \u0627\u0644\u0623\u0628\u0639\u0627\u062f \u0627\u0644\u0627\u0641\u062a\u0631\u0627\u0636\u064a\u0629 \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u0629 \u0644\u062a\u062d\u062f\u064a\u062f \u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0648\u062a\u0633\u0647\u064a\u0644 \u0627\u0644\u062a\u0648\u0627\u0635\u0644\u060c \u0628\u062f\u0644\u0627\u064b \u0645\u0646 \u0627\u0644\u0623\u0628\u0639\u0627\u062f \u0627\u0644\u0641\u0639\u0644\u064a\u0629.<\/p>\n\n<p class=\"wp-block-paragraph\">\u00a0\u0628\u0627\u0644\u0625\u0636\u0627\u0641\u0629 \u0625\u0644\u0649 \u0630\u0644\u0643\u060c \u062a\u062a\u0648\u0627\u0641\u0642 \u0643\u0644 \u0642\u064a\u0645\u0629 NPS \u0645\u0639 \u0642\u064a\u0645\u0629 NB \u0645\u062d\u062f\u062f\u0629.<\/p>\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<tbody>\n<tr>\n<td>NPS (\u0628\u0648\u0635\u0629)<\/td>\n<td>NB \u0627\u0644\u0645\u0642\u0627\u0628\u0644 (\u0628\u0648\u0635\u0629\/\u0645\u0645)<\/td>\n<td>OD (\u0628\u0648\u0635\u0629\/\u0645\u0645)<\/td>\n<\/tr>\n<tr>\n<td>1\/8<\/td>\n<td>6 NB 6 \/ 6 \u0645\u0645<\/td>\n<td>0.405 \/ 10.3<\/td>\n<\/tr>\n<tr>\n<td>1\/4<\/td>\n<td>8 NB 8 \/ 8 \u0645\u0645<\/td>\n<td>0.540 \/ 13.7<\/td>\n<\/tr>\n<tr>\n<td>3\/8<\/td>\n<td>10 NB \/ 10 \u0645\u0645<\/td>\n<td>0.675 \/ 17.1<\/td>\n<\/tr>\n<tr>\n<td>1\/2<\/td>\n<td>15 NB \/ 15 \u0645\u0645<\/td>\n<td>0.840 \/ 21.3<\/td>\n<\/tr>\n<tr>\n<td>3\/4<\/td>\n<td>20 NB \/ 20 \u0645\u0645<\/td>\n<td>1.050 \/ 26.7<\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>25 NB \/ 25 \u0645\u0645<\/td>\n<td>1.315 \/ 33.4<\/td>\n<\/tr>\n<tr>\n<td>1 1\/4<\/td>\n<td>32 NB \/ 32 \u0645\u0645<\/td>\n<td>1.660 \/ 42.2<\/td>\n<\/tr>\n<tr>\n<td>1 1\/2<\/td>\n<td>40 NB\/40 \u0645\u0645<\/td>\n<td>1.900 \/ 48.3<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>50 NB \/ 50 \u0645\u0645<\/td>\n<td>2.375 \/ 60.3<\/td>\n<\/tr>\n<tr>\n<td>2 1\/2<\/td>\n<td>65 NB\/65 \u0645\u0645<\/td>\n<td>2.875 \/ 73.0<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>80 NB \/ 80 \u0645\u0645<\/td>\n<td>3.500 \/ 88.9<\/td>\n<\/tr>\n<tr>\n<td>3 1\/2<\/td>\n<td>90 NB \/ 90 \u0645\u0645<\/td>\n<td>4.000 \/ 101.6<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>100 NB \/ 100 \u0645\u0645<\/td>\n<td>4.500 \/ 114.3<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>125 NB \/ 125 \u0645\u0645<\/td>\n<td>5.563 \/ 141.3<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>150 NB \/ 150 \u0645\u0645<\/td>\n<td>6.625 \/ 168.3<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>200 NB \/ 200 \u0645\u0645<\/td>\n<td>8.625 \/ 219.1<\/td>\n<\/tr>\n<tr>\n<td>10<\/td>\n<td>250 NB \/ 250 \u0645\u0645<\/td>\n<td>10.750 \/ 273.1<\/td>\n<\/tr>\n<tr>\n<td>12<\/td>\n<td>300 NB \/ 300 \u0645\u0645<\/td>\n<td>12.750 \/ 323.9<\/td>\n<\/tr>\n<tr>\n<td>14<\/td>\n<td>350 NB \/ 350 \u0645\u0645<\/td>\n<td>14.000 \/ 355.6<\/td>\n<\/tr>\n<tr>\n<td>16<\/td>\n<td>400 NB \/ 400 \u0645\u0645<\/td>\n<td>16.000 \/ 406.4<\/td>\n<\/tr>\n<tr>\n<td>18<\/td>\n<td>450 NB \/ 450 \u0645\u0645<\/td>\n<td>18.000 \/ 457.0<\/td>\n<\/tr>\n<tr>\n<td>20<\/td>\n<td>500 NB \/ 500 \u0645\u0645<\/td>\n<td>20.000 \/ 508.0<\/td>\n<\/tr>\n<tr>\n<td>24<\/td>\n<td>600 NB \/ 600 \u0645\u0645<\/td>\n<td>24.000 \/ 609.6<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n\n<p class=\"wp-block-paragraph\">- NPS (\u0627\u0644\u062d\u062c\u0645 \u0627\u0644\u0627\u0633\u0645\u064a \u0644\u0644\u0623\u0646\u0627\u0628\u064a\u0628) \u0645\u0639\u0628\u0631\u0627\u064b \u0639\u0646\u0647 \u0628\u0627\u0644\u0628\u0648\u0635\u0629.<\/p>\n\n<p class=\"wp-block-paragraph\">- \u064a\u0645\u0643\u0646 \u0627\u0644\u062a\u0639\u0628\u064a\u0631 \u0639\u0646 NB (\u0627\u0644\u062a\u062c\u0648\u064a\u0641 \u0627\u0644\u0627\u0633\u0645\u064a) \u0628\u0627\u0644\u0628\u0648\u0635\u0629 \u0623\u0648 \u0627\u0644\u0645\u0644\u064a\u0645\u062a\u0631\u0627\u062a \u0627\u0644\u0645\u0642\u0627\u0628\u0644\u0629. \u0648\u0641\u064a \u0645\u0639\u0627\u064a\u064a\u0631 \u0623\u0645\u0631\u064a\u0643\u0627 \u0627\u0644\u0634\u0645\u0627\u0644\u064a\u0629\u060c \u0641\u0625\u0646 NPS \u0648 NB \u0644\u064a\u0633\u0627 \u0645\u062a\u0643\u0627\u0641\u0626\u064a\u0646 \u062a\u0645\u0627\u0645\u0627\u064b\u061b \u0648\u0627\u0644\u062a\u0639\u0628\u064a\u0631 \u0639\u0646 NB \u0628\u0627\u0644\u0645\u0644\u0644\u064a\u0645\u062a\u0631 \u0623\u0643\u062b\u0631 \u0633\u0647\u0648\u0644\u0629.<\/p>\n\n<p class=\"wp-block-paragraph\">- OD (\u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062e\u0627\u0631\u062c\u064a) \u0647\u0648 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062e\u0627\u0631\u062c\u064a \u0627\u0644\u0641\u0639\u0644\u064a \u0644\u0644\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a.<\/p>\n\n<h2 class=\"wp-block-heading\"><strong>\u0623\u0628\u0639\u0627\u062f \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629 \u0648\u062c\u062f\u0648\u0644\u0647\u0627 \u0627\u0644\u0632\u0645\u0646\u064a<\/strong><\/h2>\n\n<p class=\"wp-block-paragraph\">\u062a\u0634\u0645\u0644 \u0623\u0628\u0639\u0627\u062f \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629 \u0641\u064a \u0627\u0644\u0645\u0642\u0627\u0645 \u0627\u0644\u0623\u0648\u0644:<\/p>\n\n<p class=\"wp-block-paragraph\">NPS: \u062d\u062c\u0645 \u0627\u0644\u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u0627\u0633\u0645\u064a<\/p>\n\n<p class=\"wp-block-paragraph\">ND \/ NB: \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0627\u0633\u0645\u064a<\/p>\n\n<p class=\"wp-block-paragraph\">OD (\u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062e\u0627\u0631\u062c\u064a): \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062e\u0627\u0631\u062c\u064a \u0627\u0644\u0641\u0639\u0644\u064a<\/p>\n\n<p class=\"wp-block-paragraph\">\u0627\u0644\u0645\u0639\u0631\u0641 (\u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a): \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a \u0627\u0644\u0641\u0639\u0644\u064a<\/p>\n\n<p class=\"wp-block-paragraph\">\u0627\u0644\u0633\u064f\u0645\u0643 (\u0631): \u0633\u064f\u0645\u0643 \u0627\u0644\u062c\u062f\u0627\u0631\u061b \u064a\u062a\u0648\u0627\u0641\u0642 \u0645\u0639 \u0627\u0644\u062c\u062f\u0648\u0644<\/p>\n\n<h2 class=\"wp-block-heading\"><strong>\u0641\u0647\u0645 \u062c\u062f\u0648\u0644 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 (SCH)<\/strong><\/h2>\n\n<p class=\"wp-block-paragraph\">SCH (\u0631\u0642\u0645 \u0627\u0644\u062c\u062f\u0648\u0644 \u0627\u0644\u0632\u0645\u0646\u064a) \u0647\u0648 \u0646\u0638\u0627\u0645 \u064a\u0633\u062a\u062e\u062f\u0645 \u0644\u0644\u0625\u0634\u0627\u0631\u0629 \u0625\u0644\u0649 \u0633\u064f\u0645\u0643 \u062c\u062f\u0627\u0631 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629\u060c \u0648\u0647\u0648 \u0645\u0627 \u064a\u0639\u0627\u062f\u0644 \u062f\u0631\u062c\u0629 \u0633\u064f\u0645\u0643 \u062c\u062f\u0627\u0631 \u0627\u0644\u0623\u0646\u0628\u0648\u0628.<\/p>\n\n<p class=\"wp-block-paragraph\">\u062a\u062d\u062f\u062f \u062f\u0631\u062c\u0629 \u0633\u064f\u0645\u0643 \u0627\u0644\u062c\u062f\u0627\u0631 \u0642\u0648\u0629 \u0627\u0644\u0623\u0646\u0628\u0648\u0628 \u0648\u0642\u0637\u0631\u0647 \u0627\u0644\u062f\u0627\u062e\u0644\u064a\u061b \u0648\u062a\u0634\u0645\u0644 \u0627\u0644\u062a\u0633\u0645\u064a\u0627\u062a \u0627\u0644\u0634\u0627\u0626\u0639\u0629 ASME \/ ANSI B36.10\/B36.19.<\/p>\n\n<p class=\"wp-block-paragraph\">\u0643\u0644\u0645\u0627 \u0632\u0627\u062f\u062a \u0642\u064a\u0645\u0629 SCH\u060c \u0632\u0627\u062f\u062a \u0633\u0645\u0627\u0643\u0629 \u0627\u0644\u062c\u062f\u0627\u0631\u060c \u0648\u0635\u063a\u0631 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a (ID)\u060c \u0648\u0632\u0627\u062f\u062a \u0642\u062f\u0631\u0629 \u062a\u062d\u0645\u0644 \u0627\u0644\u0636\u063a\u0637.<\/p>\n\n<h2 class=\"wp-block-heading\"><strong>\u0623\u0628\u0639\u0627\u062f \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629 \u062c\u062f\u0648\u0644 40\/80<\/strong><\/h2>\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<tbody>\n<tr>\n<td><strong>NPS (\u0628\u0648\u0635\u0629)<\/strong><\/td>\n<td><strong>OD (\u0628\u0648\u0635\u0629\/\u0645\u0645)<\/strong><\/td>\n<td><strong>\u0645\u0639\u0631\u0641 SCH 40 (\u0628\u0648\u0635\u0629\/\u0645\u0645)<\/strong><\/td>\n<td><strong>\u0645\u0639\u0631\u0641 SCH 80 (\u0628\u0648\u0635\u0629\/\u0645\u0645)<\/strong><\/td>\n<\/tr>\n<tr>\n<td>1\/2<\/td>\n<td>0.840 \/ 21.3<\/td>\n<td>0.622 \/ 15.8<\/td>\n<td>0.546 \/ 13.9<\/td>\n<\/tr>\n<tr>\n<td>3\/4<\/td>\n<td>1.050 \/ 26.7<\/td>\n<td>0.824 \/ 20.9<\/td>\n<td>0.742 \/ 18.8<\/td>\n<\/tr>\n<tr>\n<td>1<\/td>\n<td>1.315 \/ 33.4<\/td>\n<td>1.049 \/ 26.6<\/td>\n<td>0.957 \/ 24.3<\/td>\n<\/tr>\n<tr>\n<td>1 1\/4<\/td>\n<td>1.660 \/ 42.2<\/td>\n<td>1.380 \/ 35.0<\/td>\n<td>1.250 \/ 31.8<\/td>\n<\/tr>\n<tr>\n<td>1 1\/2<\/td>\n<td>1.900 \/ 48.3<\/td>\n<td>1.610 \/ 40.9<\/td>\n<td>1.500 \/ 38.1<\/td>\n<\/tr>\n<tr>\n<td>2<\/td>\n<td>2.375 \/ 60.3<\/td>\n<td>2.067 \/ 52.5<\/td>\n<td>1.939 \/ 49.3<\/td>\n<\/tr>\n<tr>\n<td>2 1\/2<\/td>\n<td>2.875 \/ 73.0<\/td>\n<td>2.469 \/ 62.7<\/td>\n<td>2.323 \/ 59.0<\/td>\n<\/tr>\n<tr>\n<td>3<\/td>\n<td>3.500 \/ 88.9<\/td>\n<td>3.068 \/ 77.9<\/td>\n<td>2.900 \/ 73.7<\/td>\n<\/tr>\n<tr>\n<td>3 1\/2<\/td>\n<td>4.000 \/ 101.6<\/td>\n<td>3.548 \/ 90.1<\/td>\n<td>3.480 \/ 88.4<\/td>\n<\/tr>\n<tr>\n<td>4<\/td>\n<td>4.500 \/ 114.3<\/td>\n<td>4.026 \/ 102.3<\/td>\n<td>3.826\u00a0\/ 97.2<\/td>\n<\/tr>\n<tr>\n<td>5<\/td>\n<td>5.563 \/ 141.3<\/td>\n<td>5.047 \/ 128.2<\/td>\n<td>4.981 \/ 126.5<\/td>\n<\/tr>\n<tr>\n<td>6<\/td>\n<td>6.625 \/ 168.3<\/td>\n<td>6.065 \/ 154.1<\/td>\n<td>5.981 \/ 151.8<\/td>\n<\/tr>\n<tr>\n<td>8<\/td>\n<td>8.625 \/ 219.1<\/td>\n<td>7.981 \/ 202.7<\/td>\n<td>7.849 \/ 199.4<\/td>\n<\/tr>\n<tr>\n<td>10<\/td>\n<td>10.750 \/ 273.1<\/td>\n<td>9.950 \/ 252.7<\/td>\n<td>9.782 \/ 248.5<\/td>\n<\/tr>\n<tr>\n<td>12<\/td>\n<td>12.750 \/ 323.9<\/td>\n<td>11.938 \/ 303.3<\/td>\n<td>11.750 \/ 298.5<\/td>\n<\/tr>\n<tr>\n<td>14<\/td>\n<td>14.000 \/ 355.6<\/td>\n<td>13.938 \/ 354.1<\/td>\n<td>13.750 \/ 349.2<\/td>\n<\/tr>\n<tr>\n<td>16<\/td>\n<td>16.000 \/ 406.4<\/td>\n<td>15.938 \/ 404.9<\/td>\n<td>15.750 \/ 400.1<\/td>\n<\/tr>\n<tr>\n<td>18<\/td>\n<td>18.000 \/ 457.0<\/td>\n<td>17.938 \/ 455.6<\/td>\n<td>17.750 \/ 450.4<\/td>\n<\/tr>\n<tr>\n<td>20<\/td>\n<td>20.000 \/ 508.0<\/td>\n<td>19.938 \/ 506.3<\/td>\n<td>19.750 \/ 501.6<\/td>\n<\/tr>\n<tr>\n<td>24<\/td>\n<td>24.000 \/ 609.6<\/td>\n<td>23.938 \/ 607.9<\/td>\n<td>23.750 \/ 603.3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n\n<p class=\"wp-block-paragraph\">SCH 40 \u0648 SCH 80 \u0643\u0644\u0627\u0647\u0645\u0627 \u0645\u0646 \u0627\u0644\u062f\u0631\u062c\u0627\u062a \u0627\u0644\u0634\u0627\u0626\u0639\u0629 \u0627\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0644\u0633\u0645\u0643 \u0627\u0644\u062c\u062f\u0627\u0631. \u0641\u064a \u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0647\u0646\u062f\u0633\u064a\u060c \u0625\u0630\u0627 \u0643\u0627\u0646 \u0644\u062e\u0637 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0645\u062a\u0637\u0644\u0628\u0627\u062a \u062a\u062f\u0641\u0642 \u0648\u0636\u063a\u0637 \u0639\u0627\u0644\u064a\u0629\u060c \u0641\u064a\u0646\u0628\u063a\u064a \u0627\u0633\u062a\u062e\u062f\u0627\u0645 SCH 80 \u0627\u0644\u0623\u0639\u0644\u0649 \u0642\u0648\u0629\u061b \u0623\u0645\u0627 \u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0627\u0644\u0639\u0627\u0645\u0629 \u0623\u0648 \u062a\u0637\u0628\u064a\u0642\u0627\u062a \u0627\u0644\u0628\u0646\u0627\u0621\u060c \u0641\u064a\u0645\u0643\u0646 \u0623\u0646 \u062a\u0644\u0628\u064a SCH 40 \u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0642\u0648\u0629 \u0627\u0644\u0623\u0633\u0627\u0633\u064a\u0629.<\/p>\n\n<h2 class=\"wp-block-heading\"><strong>\u0643\u064a\u0641 \u064a\u0624\u062b\u0631 \u0627\u0644\u062c\u062f\u0648\u0644 \u0627\u0644\u0632\u0645\u0646\u064a \u0639\u0644\u0649 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0627\u0633\u0645\u064a \u0648\u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a<\/strong><\/h2>\n\n<p class=\"wp-block-paragraph\">\u064a\u0624\u062b\u0631 SCH \u0639\u0644\u0649 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a (ID) \u0641\u0642\u0637 \u0648\u0644\u0627 \u064a\u0624\u062b\u0631 \u0639\u0644\u0649 ND \u0623\u0648 NPS.<\/p>\n\n<p class=\"wp-block-paragraph\">\u0625\u0646 ND \u0648 NPS \u0648 NB \u0647\u064a \u0623\u062d\u062c\u0627\u0645 \u0627\u0633\u0645\u064a\u0629 \u0645\u0648\u062d\u062f\u0629 \u062a\u0639\u0645\u0644 \u0643\u062a\u0633\u0645\u064a\u0627\u062a \u0644\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0648\u0644\u0627 \u062a\u062a\u063a\u064a\u0631 \u0645\u0639 \u062f\u0631\u062c\u0627\u062a \u0633\u064f\u0645\u0643 \u0627\u0644\u062c\u062f\u0627\u0631.<\/p>\n\n<p class=\"wp-block-paragraph\">\u0628\u0627\u0644\u0646\u0633\u0628\u0629 \u0644\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a (ID)\u060c \u0643\u0644\u0645\u0627 \u0632\u0627\u062f \u0627\u0644\u062c\u062f\u0648\u0644 \u0627\u0644\u0632\u0645\u0646\u064a (SCH)\u060c \u0632\u0627\u062f \u0633\u0645\u0643 \u0627\u0644\u062c\u062f\u0627\u0631 (t)\u060c \u0648\u0627\u0646\u062e\u0641\u0636\u062a \u0627\u0644\u0645\u0639\u0631\u0641\u0627\u062a.<\/p>\n\n<p class=\"wp-block-paragraph\">ID = OD - 2 \u00d7 2 \u00d7 t<\/p>\n\n<p class=\"wp-block-paragraph\">\u0645\u062b\u0627\u0644: NPS 2 (\u0642\u0637\u0631 \u062e\u0627\u0631\u062c\u064a \u062b\u0627\u0628\u062a 60.3 \u0645\u0645)<\/p>\n\n<figure class=\"wp-block-table\">\n<table class=\"has-fixed-layout\">\n<tbody>\n<tr>\n<td><strong>\u0627\u0644\u062c\u062f\u0648\u0644 \u0627\u0644\u0632\u0645\u0646\u064a<\/strong><\/td>\n<td><strong>\u0633\u0645\u0643 \u0627\u0644\u062c\u062f\u0627\u0631 \u0631 (\u0645\u0645)<\/strong><\/td>\n<td><strong>\u00a0\u0645\u0639\u0631\u0651\u0641 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a (\u0645\u0645)<\/strong><\/td>\n<\/tr>\n<tr>\n<td>\u0627\u0644\u0635\u0641 40<\/td>\n<td>3.91<\/td>\n<td>52.5<\/td>\n<\/tr>\n<tr>\n<td>SCH 80<\/td>\n<td>5.54<\/td>\n<td>49.3<\/td>\n<\/tr>\n<tr>\n<td>\u0627\u0644\u0645\u062f\u0631\u0633\u0629 160 \u062f\u0631\u062c\u0629 \u0645\u0626\u0648\u064a\u0629<\/td>\n<td>8.74<\/td>\n<td>42.8<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n\n<p class=\"wp-block-paragraph\">\u0641\u064a \u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 (\u0645\u062b\u0644 ASME B36.10)\u060c \u064a\u0638\u0644 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062e\u0627\u0631\u062c\u064a (OD) \u062b\u0627\u0628\u062a\u064b\u0627\u060c \u0648\u064a\u062a\u0645 \u062a\u0639\u062f\u064a\u0644 \u0633\u0645\u0643 \u0627\u0644\u062c\u062f\u0627\u0631 \u0639\u0628\u0631 SCH \u0644\u062a\u0644\u0628\u064a\u0629 \u0627\u0644\u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u0647\u0646\u062f\u0633\u064a\u0629 \u0627\u0644\u0645\u062e\u062a\u0644\u0641\u0629.<\/p>\n\n<h2 class=\"wp-block-heading\"><strong>\u0643\u064a\u0641\u064a\u0629 \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0627\u0633\u0645\u064a \u0627\u0644\u0645\u0646\u0627\u0633\u0628 \u0644\u0645\u0634\u0631\u0648\u0639\u0643<\/strong><\/h2>\n\n<p class=\"wp-block-paragraph\">\u064a\u0639\u062f \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0627\u0633\u0645\u064a \u0627\u0644\u0645\u0646\u0627\u0633\u0628 \u062e\u0637\u0648\u0629 \u062d\u0627\u0633\u0645\u0629 \u0641\u064a \u062a\u0635\u0645\u064a\u0645 \u062e\u0637 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628. \u0641\u0647\u0648 \u064a\u0624\u062b\u0631 \u0628\u0634\u0643\u0644 \u0645\u0628\u0627\u0634\u0631 \u0639\u0644\u0649 \u0645\u062c\u0645\u0648\u0639\u0629 \u0645\u0646 \u0627\u0644\u0642\u0636\u0627\u064a\u0627 \u0623\u062b\u0646\u0627\u0621 \u0645\u0631\u062d\u0644\u0629 \u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0623\u0648\u0644\u064a \u0648\u0628\u0639\u062f \u062a\u0634\u063a\u064a\u0644 \u062e\u0637 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628.<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>1. \u0627\u0644\u0646\u0642\u0637\u0629 \u0627\u0644\u0623\u0633\u0627\u0633\u064a\u0629: ND \u0644\u0627 \u064a\u0645\u062b\u0644 \u0627\u0644\u062d\u062c\u0645 \u0627\u0644\u0641\u0639\u0644\u064a<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">\u0623\u0648\u0644\u0627\u064b\u060c \u0645\u0646 \u0627\u0644\u0645\u0647\u0645 \u0623\u0646 \u0646\u0641\u0647\u0645 \u0623\u0646 ND \/ NPS \/ NB = \u0627\u0644\u062d\u062c\u0645 \u0627\u0644\u0627\u0633\u0645\u064a\u060c \u0648\u0627\u0644\u0630\u064a \u064a\u0633\u062a\u062e\u062f\u0645 \u0644\u0623\u063a\u0631\u0627\u0636 \u0627\u0644\u0627\u062e\u062a\u064a\u0627\u0631. \u0627\u0644\u0645\u0639\u0631\u0641 (\u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a) = \u0633\u0639\u0629 \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0641\u0639\u0644\u064a\u0629\u060c \u0648\u0627\u0644\u062a\u064a \u064a\u0645\u0643\u0646 \u0627\u0633\u062a\u062e\u062f\u0627\u0645\u0647\u0627 \u0644\u0623\u063a\u0631\u0627\u0636 \u0627\u0644\u062d\u0633\u0627\u0628\u0627\u062a.<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>2. \u062a\u062d\u062f\u064a\u062f \u0645\u062a\u0637\u0644\u0628\u0627\u062a \u0627\u0644\u062a\u062f\u0641\u0642<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">\u0623\u0648\u0644\u0627\u064b\u060c \u062a\u062d\u062f\u064a\u062f \u0645\u0639\u062f\u0644 \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u062d\u062c\u0645\u064a \u0648\u0646\u0648\u0639 \u0627\u0644\u0645\u0627\u0626\u0639 \u0627\u0644\u0645\u0631\u0627\u062f \u0646\u0642\u0644\u0647\u060c \u062b\u0645 \u062a\u062d\u062f\u064a\u062f \u0633\u0631\u0639\u0629 \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0627\u0642\u062a\u0635\u0627\u062f\u064a. \u0644\u0643\u0644 \u0645\u0627\u0626\u0639 \u0633\u0631\u0639\u0629 \u062a\u062f\u0641\u0642 \u062a\u0642\u0644\u0644 \u0645\u0646 \u0627\u0644\u062a\u0643\u0627\u0644\u064a\u0641 \u0627\u0644\u0625\u062c\u0645\u0627\u0644\u064a\u0629.<\/p>\n\n<p class=\"wp-block-paragraph\">\u0627\u0644\u0646\u0637\u0627\u0642\u0627\u062a \u0627\u0644\u0634\u0627\u0626\u0639\u0629 \u0644\u0633\u0631\u0639\u0627\u062a \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0627\u0642\u062a\u0635\u0627\u062f\u064a:<\/p>\n\n<p class=\"wp-block-paragraph\">\u0627\u0644\u0645\u0627\u0621 \u0648\u0627\u0644\u0633\u0648\u0627\u0626\u0644 \u0645\u0646\u062e\u0641\u0636\u0629 \u0627\u0644\u0644\u0632\u0648\u062c\u0629: 1.0-3.0 \u0645\/\u062b\u0627\u0646\u064a\u0629<\/p>\n\n<p class=\"wp-block-paragraph\">\u0627\u0644\u0628\u062e\u0627\u0631 \u0627\u0644\u0645\u0634\u0628\u0639: 20-40 \u0645\/\u062b\u0627\u0646\u064a\u0629<\/p>\n\n<p class=\"wp-block-paragraph\">\u063a\u0627\u0632\u0627\u062a \u0645\u0646\u062e\u0641\u0636\u0629 \u0627\u0644\u0636\u063a\u0637 10-20 \u0645\/\u062b\u0627\u0646\u064a\u0629<\/p>\n\n<p class=\"wp-block-paragraph\">\u062a\u0642\u062a\u0635\u0631 \u0627\u0644\u0648\u0633\u0627\u0626\u0637 \u0627\u0644\u0645\u0633\u0628\u0628\u0629 \u0644\u0644\u062a\u0622\u0643\u0644 \u0623\u0648 \u0627\u0644\u0645\u062d\u0645\u0644\u0629 \u0628\u0627\u0644\u062c\u0633\u064a\u0645\u0627\u062a \u0639\u0627\u062f\u0629\u064b \u0639\u0644\u0649: \u2264 1.5 \u0645\/\u062b<\/p>\n\n<p class=\"wp-block-paragraph\">\u0645\u0639\u0627\u062f\u0644\u0627\u062a \u0633\u0631\u0639\u0629 \u0627\u0644\u062a\u062f\u0641\u0642 \u0627\u0644\u0627\u0642\u062a\u0635\u0627\u062f\u064a \u0648ND<\/p>\n\n<p class=\"wp-block-paragraph\">\u0633 = \u0623 \u00d7 \u062a<\/p>\n\n<p class=\"wp-block-paragraph\">- \u0633\u0631\u0639\u0629 \u0627\u0644\u062a\u062f\u0641\u0642 v \u2191\u060c \u0648\u0645\u0633\u0627\u062d\u0629 \u0627\u0644\u0645\u0642\u0637\u0639 \u0627\u0644\u0639\u0631\u0636\u064a \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u0629 A \u2193\u060c \u0648 ND \u2193<\/p>\n\n<p class=\"wp-block-paragraph\">- \u0633\u0631\u0639\u0629 \u0627\u0644\u062a\u062f\u0641\u0642 v \u2193\u060c \u0648\u0645\u0633\u0627\u062d\u0629 \u0627\u0644\u0645\u0642\u0637\u0639 \u0627\u0644\u0639\u0631\u0636\u064a \u0627\u0644\u0645\u0637\u0644\u0648\u0628\u0629 A \u2191\u060c \u0648 ND \u2191<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>3. \u062d\u0633\u0627\u0628 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a \u0627\u0644\u0645\u0637\u0644\u0648\u0628 (ID)<\/strong><\/h3>\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"800\" height=\"453\" class=\"wp-image-28087\" src=\"https:\/\/alllandpipes.com\/wp-content\/uploads\/2026\/04\/Understanding-Nominal-Diameter-in-Steel-Pipes-NB-vs-NPS-Inner-Diameter-2.webp\" alt=\"\u0641\u0647\u0645 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0627\u0633\u0645\u064a \u0641\u064a \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629 NB \u0645\u0642\u0627\u0628\u0644 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a NPS 2\" srcset=\"https:\/\/alllandpipes.com\/wp-content\/uploads\/2026\/04\/Understanding-Nominal-Diameter-in-Steel-Pipes-NB-vs-NPS-Inner-Diameter-2.webp 800w, https:\/\/alllandpipes.com\/wp-content\/uploads\/2026\/04\/Understanding-Nominal-Diameter-in-Steel-Pipes-NB-vs-NPS-Inner-Diameter-2-300x170.webp 300w, https:\/\/alllandpipes.com\/wp-content\/uploads\/2026\/04\/Understanding-Nominal-Diameter-in-Steel-Pipes-NB-vs-NPS-Inner-Diameter-2-768x435.webp 768w, https:\/\/alllandpipes.com\/wp-content\/uploads\/2026\/04\/Understanding-Nominal-Diameter-in-Steel-Pipes-NB-vs-NPS-Inner-Diameter-2-18x10.webp 18w, https:\/\/alllandpipes.com\/wp-content\/uploads\/2026\/04\/Understanding-Nominal-Diameter-in-Steel-Pipes-NB-vs-NPS-Inner-Diameter-2-600x340.webp 600w, https:\/\/alllandpipes.com\/wp-content\/uploads\/2026\/04\/Understanding-Nominal-Diameter-in-Steel-Pipes-NB-vs-NPS-Inner-Diameter-2-1x1.webp 1w, https:\/\/alllandpipes.com\/wp-content\/uploads\/2026\/04\/Understanding-Nominal-Diameter-in-Steel-Pipes-NB-vs-NPS-Inner-Diameter-2-10x6.webp 10w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><\/figure>\n\n<p class=\"wp-block-paragraph\">\u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0627\u0644\u0645\u0639\u0627\u062f\u0644\u0629\u060c \u064a\u0645\u0643\u0646\u0646\u0627 \u062d\u0633\u0627\u0628 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a \u0627\u0644\u0646\u0638\u0631\u064a \u062b\u0645 \u062a\u062d\u062f\u064a\u062f \u0623\u0642\u0631\u0628 \u062d\u062c\u0645 \u0642\u064a\u0627\u0633\u064a ND\/NPS.<\/p>\n\n<p class=\"wp-block-paragraph\">\u0645\u0644\u0627\u062d\u0638\u0629: \u0639\u0646\u062f \u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u062d\u062c\u0645\u060c \u0645\u0646 \u0627\u0644\u0623\u0641\u0636\u0644 \u0627\u062e\u062a\u064a\u0627\u0631 \u062d\u062c\u0645 \u0623\u0643\u0628\u0631 \u0645\u0646 \u0627\u0644\u062d\u062c\u0645 \u0627\u0644\u0623\u0635\u063a\u0631 \u0644\u0644\u0633\u0645\u0627\u062d \u0628\u062a\u0648\u0633\u064a\u0639 \u0627\u0644\u0633\u0639\u0629 \u0641\u064a \u0627\u0644\u0645\u0633\u062a\u0642\u0628\u0644.<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>4. \u062a\u0644\u0628\u064a\u0629 \u0627\u0644\u0642\u064a\u0648\u062f \u0627\u0644\u062e\u0627\u0635\u0629 \u0628\u0627\u0644\u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u062e\u0627\u0635\u0629<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">4.1 \u062a\u062a\u0637\u0644\u0628 \u0627\u0644\u0633\u0648\u0627\u0626\u0644 \u0627\u0644\u062a\u064a \u062a\u062d\u062a\u0648\u064a \u0639\u0644\u0649 \u062c\u0633\u064a\u0645\u0627\u062a \u0635\u0644\u0628\u0629 (\u0627\u0644\u0637\u064a\u0646 \u0648\u0645\u064a\u0627\u0647 \u0627\u0644\u0635\u0631\u0641 \u0627\u0644\u0635\u062d\u064a) \u0639\u0627\u062f\u0629\u064b \u0642\u0637\u0631\u064b\u0627 \u0627\u0633\u0645\u064a\u064b\u0627 (ND) \u0644\u0627 \u064a\u0642\u0644 \u0639\u0646 3 \u0625\u0644\u0649 4 \u0623\u0636\u0639\u0627\u0641 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0623\u0642\u0635\u0649 \u0644\u0644\u062c\u0633\u064a\u0645\u0627\u062a \u0627\u0644\u0635\u0644\u0628\u0629.<\/p>\n\n<p class=\"wp-block-paragraph\">4.2 \u0642\u0637\u0631 \u0623\u0646\u0628\u0648\u0628 \u0645\u062f\u062e\u0644 \u0627\u0644\u0645\u0636\u062e\u0629 (\u0645\u062a\u0637\u0644\u0628\u0627\u062a NPSH): \u064a\u062c\u0628 \u0623\u0646 \u064a\u0643\u0648\u0646 \u0642\u0637\u0631 \u0623\u0646\u0628\u0648\u0628 \u0645\u062f\u062e\u0644 \u0627\u0644\u0645\u0636\u062e\u0629 \u0623\u0643\u0628\u0631 \u0628\u0645\u0642\u0627\u0633 \u0648\u0627\u062d\u062f \u0639\u0644\u0649 \u0627\u0644\u0623\u0642\u0644 \u0645\u0646 \u0627\u0644\u0645\u062e\u0631\u062c. \u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c \u0625\u0630\u0627 \u0643\u0627\u0646 \u0645\u062e\u0631\u062c \u0627\u0644\u0645\u0636\u062e\u0629 ND80\u060c \u064a\u062c\u0628 \u0623\u0646 \u064a\u0643\u0648\u0646 \u0642\u0637\u0631 \u0623\u0646\u0628\u0648\u0628 \u0627\u0644\u0645\u062f\u062e\u0644 ND100 \u0639\u0644\u0649 \u0627\u0644\u0623\u0642\u0644.<\/p>\n\n<h3 class=\"wp-block-heading\"><strong>5. \u0627\u0644\u0646\u0638\u0631 \u0641\u064a \u0627\u0644\u0639\u0648\u0627\u0645\u0644 \u0627\u0644\u0647\u0646\u062f\u0633\u064a\u0629 \u0627\u0644\u0639\u0645\u0644\u064a\u0629<\/strong><\/h3>\n\n<p class=\"wp-block-paragraph\">\u0642\u0628\u0644 \u0648\u0636\u0639 \u0627\u0644\u0645\u0634\u0631\u0648\u0639 \u0642\u064a\u062f \u0627\u0644\u062a\u0634\u063a\u064a\u0644 \u0627\u0644\u0641\u0639\u0644\u064a\u060c \u0645\u0646 \u0627\u0644\u0636\u0631\u0648\u0631\u064a \u0627\u0644\u0646\u0638\u0631 \u0641\u064a \u0647\u0648\u0627\u0645\u0634 \u0627\u0644\u0623\u0645\u0627\u0646\u060c \u0648\u0627\u062d\u062a\u064a\u0627\u062c\u0627\u062a \u0627\u0644\u062a\u0648\u0633\u0639 \u0627\u0644\u0645\u0633\u062a\u0642\u0628\u0644\u064a\u0629 \u0627\u0644\u0645\u062d\u062a\u0645\u0644\u0629\u060c \u0648\u062a\u062d\u0633\u064a\u0646 \u0627\u0644\u062a\u0643\u0644\u0641\u0629.<\/p>\n\n<p class=\"wp-block-paragraph\">\u0628\u0634\u0643\u0644 \u0639\u0627\u0645\u060c \u064a\u062a\u0645 \u0623\u062e\u0630 \u0647\u0648\u0627\u0645\u0634 \u0627\u0644\u0623\u0645\u0627\u0646 \u0641\u064a \u0627\u0644\u062d\u0633\u0628\u0627\u0646 \u0628\u0645\u0639\u062f\u0644 10%-20% \u0623\u0639\u0644\u0649 \u0645\u0646 \u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0623\u0635\u0644\u064a.<\/p>\n\n<h2 class=\"wp-block-heading\"><strong>\u0627\u0644\u0623\u0633\u0626\u0644\u0629 \u0627\u0644\u0634\u0627\u0626\u0639\u0629<\/strong><\/h2>\n\n<h4 class=\"wp-block-heading\"><strong>\u0645\u0627 \u0647\u0648 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0627\u0633\u0645\u064a (ND) \u0641\u064a \u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0635\u0644\u0628\u061f<\/strong><\/h4>\n\n<p class=\"wp-block-paragraph\">\u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0627\u0633\u0645\u064a (ND): \u201c\u062a\u0633\u0645\u064a\u0629\u201d \u0645\u0648\u062d\u062f\u0629 \u0644\u0623\u062d\u062c\u0627\u0645 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628\u061b \u0644\u0627 \u062a\u0645\u062b\u0644 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a \u0623\u0648 \u0627\u0644\u062e\u0627\u0631\u062c\u064a \u0627\u0644\u0641\u0639\u0644\u064a \u0648\u0647\u064a \u0645\u062e\u0635\u0635\u0629 \u0641\u0642\u0637 \u0644\u0623\u063a\u0631\u0627\u0636 \u0627\u0644\u0627\u062e\u062a\u064a\u0627\u0631 \u0648\u0627\u0644\u062a\u0635\u0645\u064a\u0645.<\/p>\n\n<h4 class=\"wp-block-heading\"><strong>\u0647\u0644 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0627\u0633\u0645\u064a \u0647\u0648 \u0646\u0641\u0633\u0647 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a (ID)\u061f<\/strong><\/h4>\n\n<p class=\"wp-block-paragraph\">\u0644\u0627.<\/p>\n\n<p class=\"wp-block-paragraph\">ND (\u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0627\u0633\u0645\u064a): \u0628\u064f\u0639\u062f \u0645\u0631\u062c\u0639\u064a \u064a\u0638\u0644 \u062b\u0627\u0628\u062a\u0627\u064b<\/p>\n\n<p class=\"wp-block-paragraph\">\u0627\u0644\u0645\u0639\u0631\u0641 (\u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a \u0627\u0644\u0641\u0639\u0644\u064a): \u064a\u062e\u062a\u0644\u0641 \u0628\u0627\u062e\u062a\u0644\u0627\u0641 \u0633\u064f\u0645\u0643 \u0627\u0644\u062c\u062f\u0627\u0631\u061b \u0641\u0645\u0639 \u062a\u063a\u064a\u0631 \u0633\u064f\u0645\u0643 \u0627\u0644\u062c\u062f\u0627\u0631\u060c \u064a\u062a\u063a\u064a\u0631 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062f\u0627\u062e\u0644\u064a \u0623\u064a\u0636\u064b\u0627<\/p>\n\n<p class=\"wp-block-paragraph\">\u064a\u062a\u063a\u064a\u0631 \u0627\u0644\u0645\u0639\u0631\u0641\u060c \u0648\u0644\u0643\u0646 \u064a\u0638\u0644 ND \u0643\u0645\u0627 \u0647\u0648.<\/p>\n\n<h2 class=\"wp-block-heading\"><strong>\u0645\u0627 \u0627\u0644\u0641\u0631\u0642 \u0628\u064a\u0646 NB \u0648NPS\u061f<\/strong><\/h2>\n\n<p class=\"wp-block-paragraph\">\u064a\u0634\u064a\u0631 NB \u0625\u0644\u0649 \u0627\u0644\u062a\u062c\u0648\u064a\u0641 \u0627\u0644\u0627\u0633\u0645\u064a \u0644\u0644\u0623\u0646\u0628\u0648\u0628\u060c \u0648\u064a\u0642\u0627\u0633 \u0628\u0627\u0644\u0645\u0644\u0644\u064a\u0645\u062a\u0631\u061b \u0648\u0647\u0648 \u0644\u064a\u0633 \u0627\u0644\u0628\u0639\u062f \u0627\u0644\u0641\u0639\u0644\u064a \u0648\u064a\u0633\u062a\u062e\u062f\u0645 \u0639\u0627\u062f\u0629 \u0641\u064a \u0627\u0644\u0645\u0645\u0644\u0643\u0629 \u0627\u0644\u0645\u062a\u062d\u062f\u0629.<\/p>\n\n<p class=\"wp-block-paragraph\">NPS \u0647\u0648 \u0645\u0639\u064a\u0627\u0631 \u062a\u062d\u062c\u064a\u0645 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645 \u0639\u0644\u0649 \u0646\u0637\u0627\u0642 \u0648\u0627\u0633\u0639 \u0641\u064a \u0623\u0645\u0631\u064a\u0643\u0627 \u0627\u0644\u0634\u0645\u0627\u0644\u064a\u0629\u060c \u0648\u064a\u0642\u0627\u0633 \u0628\u0627\u0644\u0628\u0648\u0635\u0629\u061b \u0648\u0647\u0648 \u0644\u0627 \u064a\u0634\u064a\u0631 \u0625\u0644\u0649 \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u062e\u0627\u0631\u062c\u064a \u0623\u0648 \u0627\u0644\u062f\u0627\u062e\u0644\u064a \u0627\u0644\u0641\u0639\u0644\u064a \u0644\u0644\u0623\u0646\u0628\u0648\u0628\u060c \u0648\u0644\u0643\u0646\u0647 \u0645\u062c\u0631\u062f \u062a\u0633\u0645\u064a\u0629 \u0644\u0644\u062a\u062d\u062c\u064a\u0645.<\/p>\n\n<p class=\"wp-block-paragraph\">\u0648\u0645\u0639 \u0630\u0644\u0643\u060c \u0641\u0625\u0646 \u0627\u0644\u0645\u0641\u0647\u0648\u0645\u064a\u0646 \u0645\u062a\u0643\u0627\u0641\u0626\u0627\u0646 \u0628\u0634\u0643\u0644 \u0623\u0633\u0627\u0633\u064a \u0648\u064a\u0634\u064a\u0631\u0627\u0646 \u0625\u0644\u0649 \u0623\u0646\u0627\u0628\u064a\u0628 \u0645\u0646 \u0646\u0641\u0633 \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a. \u0639\u0644\u0649 \u0633\u0628\u064a\u0644 \u0627\u0644\u0645\u062b\u0627\u0644\u060c NPS 2 \u2248 NB 50.<\/p>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>What is Nominal Diameter (ND) in Steel Pipes? Nominal Diameter (ND) is a universally recognized term used for sizing pipes, steel tubes, valves,&#8230;<\/p>","protected":false},"author":1,"featured_media":28088,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_seopress_robots_primary_cat":"","_seopress_titles_title":"","_seopress_titles_desc":"Confused by NB, NPS, and ND? Learn the differences in pipe sizes. Includes Sch 40\/80 charts and flow rate selection tips by ALLLAND.","_seopress_robots_index":"","_gspb_post_css":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-28086","post","type-post","status-publish","format-standard","has-post-thumbnail","category-blogs"],"acf":[],"_links":{"self":[{"href":"https:\/\/alllandpipes.com\/ar\/wp-json\/wp\/v2\/posts\/28086","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/alllandpipes.com\/ar\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/alllandpipes.com\/ar\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/alllandpipes.com\/ar\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/alllandpipes.com\/ar\/wp-json\/wp\/v2\/comments?post=28086"}],"version-history":[{"count":3,"href":"https:\/\/alllandpipes.com\/ar\/wp-json\/wp\/v2\/posts\/28086\/revisions"}],"predecessor-version":[{"id":28092,"href":"https:\/\/alllandpipes.com\/ar\/wp-json\/wp\/v2\/posts\/28086\/revisions\/28092"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/alllandpipes.com\/ar\/wp-json\/wp\/v2\/media\/28088"}],"wp:attachment":[{"href":"https:\/\/alllandpipes.com\/ar\/wp-json\/wp\/v2\/media?parent=28086"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/alllandpipes.com\/ar\/wp-json\/wp\/v2\/categories?post=28086"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/alllandpipes.com\/ar\/wp-json\/wp\/v2\/tags?post=28086"}],"curies":[{"name":"\u062f\u0628\u0644\u064a\u0648 \u0628\u064a","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}