{"id":31519,"date":"2026-06-23T14:08:46","date_gmt":"2026-06-23T06:08:46","guid":{"rendered":"https:\/\/alllandpipes.com\/?p=31519"},"modified":"2026-06-23T14:26:34","modified_gmt":"2026-06-23T06:26:34","slug":"astm-a671-vs-a672-steel-pipes-differences","status":"publish","type":"post","link":"https:\/\/alllandpipes.com\/ar\/blogs\/astm-a671-vs-a672-steel-pipes-differences.html","title":{"rendered":"\u0627\u062e\u062a\u064a\u0627\u0631 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629 \u0644\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0641\u064a \u062f\u0631\u062c\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0639\u0627\u0644\u064a\u0629 \u0648\u0627\u0644\u0645\u0646\u062e\u0641\u0636\u0629: ASTM A671 \u0645\u0642\u0627\u0628\u0644 ASTM A672"},"content":{"rendered":"
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\u0645\u0642\u062f\u0645\u0629<\/strong><\/h2>\n\n

\u062a\u0639\u062a\u0645\u062f \u062e\u0637\u0648\u0637 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0627\u0644\u062a\u064a \u062a\u0639\u0645\u0644 \u0641\u064a \u0638\u0631\u0648\u0641 \u062f\u0631\u062c\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0642\u0635\u0648\u0649\u060c \u0648\u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u0629 \u0641\u064a \u0642\u0637\u0627\u0639\u0627\u062a \u0627\u0644\u0646\u0641\u0637 \u0648\u0627\u0644\u063a\u0627\u0632\u060c \u0648\u062a\u0648\u0644\u064a\u062f \u0627\u0644\u0637\u0627\u0642\u0629\u060c \u0648\u0627\u0644\u062a\u062e\u0632\u064a\u0646 \u0641\u064a \u062f\u0631\u062c\u0627\u062a \u062d\u0631\u0627\u0631\u0629 \u0645\u0646\u062e\u0641\u0636\u0629\u060c \u0648\u0627\u0644\u0628\u0646\u064a\u0629 \u0627\u0644\u062a\u062d\u062a\u064a\u0629 \u0627\u0644\u0628\u0644\u062f\u064a\u0629\u060c \u0639\u0644\u0649 \u0623\u0646\u0627\u0628\u064a\u0628 \u0641\u0648\u0644\u0627\u0630\u064a\u0629 \u0645\u0644\u062d\u0648\u0645\u0629 \u0645\u062a\u064a\u0646\u0629 \u0644\u0645\u0642\u0627\u0648\u0645\u0629 \u0627\u0644\u062a\u0634\u0642\u0642 \u0627\u0644\u0646\u0627\u062a\u062c \u0639\u0646 \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0648\u0627\u0644\u062a\u0634\u0648\u0647 \u0627\u0644\u0646\u0627\u062c\u0645 \u0639\u0646 \u0627\u0644\u0636\u063a\u0637. \u0648\u062a\u062a\u0637\u0644\u0628 \u062c\u0645\u064a\u0639 \u0645\u0634\u0627\u0631\u064a\u0639 \u062e\u0637\u0648\u0637 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0645\u062e\u0635\u0635\u0629 \u0644\u0644\u0623\u0639\u0645\u0627\u0644 \u0627\u0644\u0634\u0627\u0642\u0629 \u0627\u0644\u0627\u0645\u062a\u062b\u0627\u0644 \u0627\u0644\u0635\u0627\u0631\u0645 \u0644\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0627\u0644\u0645\u0648\u062d\u062f\u0629 \u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0645\u0635\u0646\u0648\u0639\u0629 \u0645\u0646 \u0627\u0644\u0641\u0648\u0644\u0627\u0630 \u0627\u0644\u0643\u0631\u0628\u0648\u0646\u064a<\/strong>, \u060c \u0644\u0623\u0646 \u0627\u0644\u0647\u0634\u0627\u0634\u0629 \u0639\u0646\u062f \u062f\u0631\u062c\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u062a\u062d\u062a \u0627\u0644\u0635\u0641\u0631 \u0648\u0627\u0644\u0632\u062d\u0641 \u0639\u0646\u062f \u062f\u0631\u062c\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0639\u0627\u0644\u064a\u0629 \u0647\u0645\u0627 \u0633\u0628\u0628\u0627\u0646 \u0634\u0627\u0626\u0639\u0627\u0646 \u0644\u0644\u0641\u0634\u0644 \u0641\u064a \u0638\u0644 \u0638\u0631\u0648\u0641 \u0627\u0644\u0639\u0645\u0644 \u0627\u0644\u0642\u0627\u0633\u064a\u0629. \u0645\u0646 \u0627\u0644\u0645\u0647\u0645 \u062c\u062f\u064b\u0627 \u0644\u0645\u0647\u0646\u062f\u0633\u064a \u0627\u0644\u0645\u0634\u0627\u0631\u064a\u0639 \u0648\u0641\u0631\u0642 \u0627\u0644\u0645\u0634\u062a\u0631\u064a\u0627\u062a \u0627\u0644\u062a\u0645\u064a\u064a\u0632 \u0628\u064a\u0646 \u0645\u0639\u064a\u0627\u0631\u064a \u0623\u0646\u0627\u0628\u064a\u0628 EFW ASTM A671 \u0648 ASTM A672\u060c \u0644\u0623\u0646 \u0643\u0644\u0627 \u0627\u0644\u0645\u0639\u064a\u0627\u0631\u064a\u0646 \u064a\u062a\u0645 \u062a\u0635\u0646\u064a\u0639\u0647\u0645\u0627 \u0648\u062a\u0648\u0631\u064a\u062f\u0627\u0647\u0645\u0627 \u0639\u0644\u0649 \u0646\u0637\u0627\u0642 \u0648\u0627\u0633\u0639 \u0645\u0646 \u0642\u0628\u0644 \u0645\u0635\u0646\u0639\u064a \u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630 \u0627\u0644\u0643\u0631\u0628\u0648\u0646\u064a \u0627\u0644\u0645\u0624\u0647\u0644\u064a\u0646 \u0641\u064a \u062c\u0645\u064a\u0639 \u0623\u0646\u062d\u0627\u0621 \u0627\u0644\u0639\u0627\u0644\u0645.<\/p>\n\n

\u064a\u0639\u062a\u0645\u062f \u0647\u0630\u0627\u0646 \u0627\u0644\u0645\u0639\u064a\u0627\u0631\u0627\u0646 \u0627\u0644\u062e\u0627\u0635\u0627\u0646 \u0628\u0623\u0646\u0627\u0628\u064a\u0628 EFW \u0639\u0644\u0649 \u0627\u0644\u0644\u062d\u0627\u0645 \u0628\u0627\u0644\u0642\u0648\u0633 \u0627\u0644\u0645\u063a\u0645\u0648\u0631 \u0639\u0644\u0649 \u0627\u0644\u0623\u0644\u0648\u0627\u062d \u0644\u0625\u0646\u062a\u0627\u062c \u0645\u0646\u062a\u062c\u0627\u062a \u0639\u0627\u0644\u064a\u0629 \u0627\u0644\u062c\u0648\u062f\u0629 \u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0635\u0644\u0628 LSAW<\/a><\/strong>, \u060c \u0648\u0645\u0639 \u0630\u0644\u0643 \u0641\u0642\u062f \u0635\u064f\u0645\u0645\u062a \u0644\u062a\u062a\u0646\u0627\u0633\u0628 \u0645\u0639 \u0638\u0631\u0648\u0641 \u062f\u0631\u062c\u0627\u062a \u062d\u0631\u0627\u0631\u0629 \u0645\u062e\u062a\u0644\u0641\u0629 \u062a\u0645\u0627\u0645\u064b\u0627. ASTM A671<\/a> \u062a\u0631\u0643\u0632 \u0639\u0644\u0649 \u0645\u062a\u0627\u0646\u0629 \u0627\u0644\u0635\u062f\u0645 \u0639\u0646\u062f \u062f\u0631\u062c\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u0646\u062e\u0641\u0636\u0629\u060c \u0641\u064a \u062d\u064a\u0646 \u062a\u0647\u062f\u0641 \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0629 ASTM A672 \u0625\u0644\u0649 \u0636\u0645\u0627\u0646 \u0627\u0644\u0627\u0633\u062a\u0642\u0631\u0627\u0631 \u0641\u064a \u0638\u0631\u0648\u0641 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0639\u0627\u0644\u064a \u0648\u062f\u0631\u062c\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u062a\u0648\u0633\u0637\u0629 \u0648\u0627\u0644\u0639\u0627\u0644\u064a\u0629. \u062a\u0648\u0636\u062d \u0647\u0630\u0647 \u0627\u0644\u0645\u0642\u0627\u0644\u0629 \u0627\u0644\u0627\u062e\u062a\u0644\u0627\u0641\u0627\u062a \u0628\u064a\u0646\u0647\u0645\u0627 \u0641\u064a \u062f\u0631\u062c\u0627\u062a \u0627\u0644\u0645\u0648\u0627\u062f \u0648\u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629 \u0648\u0628\u0631\u0648\u062a\u0648\u0643\u0648\u0644\u0627\u062a \u0627\u0644\u0627\u062e\u062a\u0628\u0627\u0631 \u0648\u0633\u064a\u0646\u0627\u0631\u064a\u0648\u0647\u0627\u062a \u0627\u0644\u062a\u0637\u0628\u064a\u0642\u060c \u0643\u0645\u0627 \u062a\u0631\u0634\u062f \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u064a\u0646 \u0625\u0644\u0649 \u0627\u062e\u062a\u064a\u0627\u0631 \u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0645\u0637\u0627\u0628\u0642\u0629 \u0644\u0644\u0645\u0639\u0627\u064a\u064a\u0631 \u0648\u0645\u0635\u0646\u0639\u064a \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0645\u0648\u062b\u0648\u0642 \u0628\u0647\u0645 \u0644\u0645\u0634\u0627\u0631\u064a\u0639 \u062e\u0637\u0648\u0637 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u062a\u064a \u062a\u0639\u0645\u0644 \u0641\u064a \u0638\u0631\u0648\u0641 \u062f\u0631\u062c\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0642\u0635\u0648\u0649.<\/p>\n\n

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1<\/span>\u0645\u0642\u062f\u0645\u0629<\/a><\/span><\/div>\n
2<\/span>1. \u0641\u0647\u0645 \u0645\u0639\u064a\u0627\u0631 ASTM A671: \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629 EFW \u0627\u0644\u0645\u062e\u0635\u0635\u0629 \u0644\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0641\u064a \u062f\u0631\u062c\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u0646\u062e\u0641\u0636\u0629<\/a><\/span><\/div>\n
3<\/span>2. \u0641\u0647\u0645 \u0645\u0639\u064a\u0627\u0631 ASTM A672: \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629 EFW \u0627\u0644\u0645\u062e\u0635\u0635\u0629 \u0644\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0641\u064a \u0638\u0631\u0648\u0641 \u0627\u0644\u0636\u063a\u0637 \u0627\u0644\u0639\u0627\u0644\u064a \u0648\u062f\u0631\u062c\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u062a\u0648\u0633\u0637\u0629 \u0625\u0644\u0649 \u0627\u0644\u0639\u0627\u0644\u064a\u0629<\/a><\/span><\/div>\n
4<\/span>3. \u0627\u0644\u0627\u062e\u062a\u0644\u0627\u0641\u0627\u062a \u0627\u0644\u0631\u0626\u064a\u0633\u064a\u0629: ASTM A671 \u0645\u0642\u0627\u0628\u0644 ASTM A672<\/a><\/span><\/div>\n
5<\/span>4. \u0639\u0645\u0644\u064a\u0627\u062a \u062a\u0635\u0646\u064a\u0639 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629 \u0628\u062a\u0642\u0646\u064a\u062a\u064a EFW \u0648LSAW<\/a><\/span><\/div>\n
6<\/span>5. \u0643\u064a\u0641\u064a\u0629 \u0627\u062e\u062a\u064a\u0627\u0631 \u0645\u0635\u0646\u0639 \u0645\u0624\u0647\u0644 \u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0635\u0644\u0628 \u0627\u0644\u0643\u0631\u0628\u0648\u0646\u064a<\/a><\/span><\/div>\n
7<\/span>6. \u0627\u0644\u0623\u0633\u0626\u0644\u0629 \u0627\u0644\u0634\u0627\u0626\u0639\u0629 (FAQ)<\/a><\/span><\/div>\n
8<\/span>7. \u0627\u0644\u062e\u0627\u062a\u0645\u0629<\/a><\/span><\/div>\n<\/div>\n<\/div>\n\n
\"\u0633\u0627\u062d\u0629<\/div>\n\n

1. \u0641\u0647\u0645 \u0645\u0639\u064a\u0627\u0631 ASTM A671: \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629 EFW \u0627\u0644\u0645\u062e\u0635\u0635\u0629 \u0644\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0641\u064a \u062f\u0631\u062c\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u0646\u062e\u0641\u0636\u0629<\/strong><\/h2>\n\n

1.1 \u0627\u0644\u0646\u0637\u0627\u0642 \u0648\u0627\u0644\u063a\u0631\u0636 \u0645\u0646 \u0627\u0644\u062a\u0635\u0645\u064a\u0645<\/strong><\/h3>\n\n

\u062a\u063a\u0637\u064a \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0629 ASTM A671 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629 \u0627\u0644\u0645\u0644\u062d\u0648\u0645\u0629 \u0628\u0627\u0644\u0635\u0647\u0631 \u0627\u0644\u0643\u0647\u0631\u0628\u0627\u0626\u064a \u0648\u0627\u0644\u0645\u062e\u0635\u0635\u0629 \u0644\u0644\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0641\u064a \u0627\u0644\u0638\u0631\u0648\u0641 \u0627\u0644\u062c\u0648\u064a\u0629 \u0627\u0644\u0639\u0627\u062f\u064a\u0629 \u0648\u062f\u0631\u062c\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u0646\u062e\u0641\u0636\u0629 \u0627\u0644\u062a\u064a \u062a\u062a\u0637\u0644\u0628 \u0635\u0644\u0627\u0628\u0629 \u0639\u0646\u062f \u0627\u0644\u0634\u0642. \u0648\u064a\u0648\u0644\u064a \u0627\u0644\u062a\u0635\u0645\u064a\u0645 \u0627\u0644\u0623\u0633\u0627\u0633\u064a \u0627\u0644\u0623\u0648\u0644\u0648\u064a\u0629 \u0644\u0645\u062a\u0627\u0646\u0629 \u0627\u0644\u0634\u0642 \u0639\u0646\u062f \u062f\u0631\u062c\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u0646\u062e\u0641\u0636\u0629 \u0644\u062a\u062c\u0646\u0628 \u0627\u0644\u0643\u0633\u0631 \u0627\u0644\u0647\u0634 \u0641\u064a \u0627\u0644\u0628\u064a\u0626\u0627\u062a \u0627\u0644\u062a\u064a \u062a\u0642\u0644 \u0641\u064a\u0647\u0627 \u062f\u0631\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0639\u0646 \u0627\u0644\u0635\u0641\u0631. \u0648\u064a\u0646\u0637\u0628\u0642 \u0647\u0630\u0627 \u0627\u0644\u0645\u0639\u064a\u0627\u0631 \u0639\u0644\u0649 \u062e\u0637\u0648\u0637 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0630\u0627\u062a \u0627\u0644\u0642\u0637\u0631 \u0627\u0644\u0643\u0628\u064a\u0631 \u0645\u0646 NPS 16 \u0641\u0645\u0627 \u0641\u0648\u0642\u060c \u0628\u0633\u0645\u0643 \u062c\u062f\u0627\u0631 \u0644\u0627 \u064a\u0642\u0644 \u0639\u0646 6 \u0645\u0645\u060c \u0648\u064a\u0633\u062a\u062e\u062f\u0645 \u0639\u0644\u0649 \u0646\u0637\u0627\u0642 \u0648\u0627\u0633\u0639 \u0641\u064a \u0627\u0644\u0623\u0646\u0638\u0645\u0629 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629 \u0627\u0644\u062a\u064a \u062a\u0639\u0645\u0644 \u0641\u064a \u062f\u0631\u062c\u0627\u062a \u062d\u0631\u0627\u0631\u0629 \u0645\u0646\u062e\u0641\u0636\u0629.<\/p>\n\n

\u0628\u0627\u0639\u062a\u0628\u0627\u0631\u0647 \u0645\u0646\u062a\u062c\u064b\u0627 \u0631\u0626\u064a\u0633\u064a\u064b\u0651\u0627 \u0641\u064a \u0645\u062c\u0627\u0644 \u0627\u0644\u0627\u062d\u062a\u0631\u0627\u0641 \u0634\u0631\u0643\u0629 \u0645\u0635\u0646\u0639\u0629 \u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630 \u0627\u0644\u0643\u0631\u0628\u0648\u0646\u064a<\/strong>\u0641\u064a \u0645\u0646\u0634\u0622\u062a \u0627\u0644\u0634\u0631\u0643\u0629\u060c \u062a\u064f\u0635\u0646\u0639 \u0627\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0641\u0648\u0644\u0627\u0630\u064a\u0629 ASTM A671 EFW \u0639\u0627\u062f\u0629\u064b \u0628\u0627\u0633\u062a\u062e\u062f\u0627\u0645 \u0639\u0645\u0644\u064a\u0627\u062a \u062a\u0634\u0643\u064a\u0644 \u0627\u0644\u0623\u0644\u0648\u0627\u062d \u0648\u0627\u0644\u0644\u062d\u0627\u0645 \u0628\u0627\u0644\u0642\u0648\u0633 \u0627\u0644\u0645\u063a\u0645\u0648\u0631\u060c \u0628\u0645\u0627 \u0641\u064a \u0630\u0644\u0643 \u0637\u0631\u064a\u0642\u0629 JCOE \u0648\u0637\u0631\u0642 \u0627\u0644\u0644\u062d\u0627\u0645 \u0627\u0644\u0637\u0648\u0644\u064a \u0627\u0644\u0623\u062e\u0631\u0649. \u0648\u062a\u0633\u0627\u0647\u0645 \u0627\u0644\u0631\u0642\u0627\u0628\u0629 \u0627\u0644\u0635\u0627\u0631\u0645\u0629 \u0639\u0644\u0649 \u0627\u0644\u0634\u0648\u0627\u0626\u0628 \u0627\u0644\u0643\u064a\u0645\u064a\u0627\u0626\u064a\u0629 \u0641\u064a \u0645\u0646\u0639 \u0627\u0646\u062a\u0634\u0627\u0631 \u0627\u0644\u0634\u0642\u0648\u0642 \u0627\u0644\u062f\u0642\u064a\u0642\u0629 \u0628\u0634\u0643\u0644 \u0641\u0639\u0627\u0644 \u0641\u064a \u0638\u0644 \u0627\u0644\u0635\u062f\u0645\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629 \u0639\u0646\u062f \u062f\u0631\u062c\u0627\u062a \u0627\u0644\u062d\u0631\u0627\u0631\u0629 \u0627\u0644\u0645\u0646\u062e\u0641\u0636\u0629\u060c \u0648\u0647\u0648 \u0645\u0627 \u064a\u062a\u0648\u0627\u0641\u0642 \u0645\u0639 \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u062f\u0648\u0644\u064a\u0629 \u0644\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0645\u0633\u062a\u062e\u062f\u0645\u0629 \u0641\u064a \u0627\u0644\u0638\u0631\u0648\u0641 \u0627\u0644\u0628\u0627\u0631\u062f\u0629.<\/p>\n\n

1.2 \u0627\u0644\u062f\u0631\u062c\u0627\u062a \u0627\u0644\u0634\u0627\u0626\u0639\u0629 \u0648\u0641\u0626\u0627\u062a \u0627\u0644\u0645\u0639\u0627\u0644\u062c\u0629 \u0627\u0644\u062d\u0631\u0627\u0631\u064a\u0629<\/strong><\/h3>\n\n

\u062a\u062a\u0648\u0627\u0641\u0642 \u062f\u0631\u062c\u0627\u062a ASTM A671 \u0645\u0639 \u0623\u0644\u0648\u0627\u062d \u0641\u0648\u0644\u0627\u0630\u064a\u0629 \u0645\u062d\u062f\u062f\u0629 \u0645\u062e\u0635\u0635\u0629 \u0644\u0623\u0648\u0639\u064a\u0629 \u0627\u0644\u0636\u063a\u0637\u060c \u0643\u0645\u0627 \u0623\u0646\u0647\u0627 \u062a\u062a\u0648\u0627\u0641\u0642 \u0645\u0639 \u0627\u0644\u0645\u0648\u0627\u0635\u0641\u0627\u062a \u0627\u0644\u0645\u0648\u062d\u062f\u0629 \u0644\u0644\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0635\u0646\u0627\u0639\u064a\u0629.<\/p>\n\n