{"id":31924,"date":"2026-07-09T11:05:27","date_gmt":"2026-07-09T03:05:27","guid":{"rendered":"https:\/\/alllandpipes.com\/?p=31924"},"modified":"2026-07-09T11:12:17","modified_gmt":"2026-07-09T03:12:17","slug":"large-diameter-steel-pipe-manufacturers","status":"publish","type":"post","link":"https:\/\/alllandpipes.com\/ar\/blogs\/large-diameter-steel-pipe-manufacturers.html","title":{"rendered":"Large Diameter Steel Pipe Supplier & Manufacturer | Allland Pipes"},"content":{"rendered":"
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Large diameter steel pipe manufacturers specialize in producing high-diameter steel pipes used for oil & gas transmission, water pipelines, infrastructure projects, offshore engineering, and heavy construction.<\/p>\n\n

Large diameter steel pipes are typically manufactured using LSAW (\u0627\u0644\u0644\u062d\u0627\u0645 \u0628\u0627\u0644\u0642\u0648\u0633 \u0627\u0644\u0637\u0648\u0644\u064a \u0627\u0644\u0645\u063a\u0645\u0648\u0631)<\/strong>\u00a0\u0648 SSAW (\u0644\u062d\u0627\u0645 \u0627\u0644\u0642\u0648\u0633 \u0627\u0644\u0645\u063a\u0645\u0648\u0631 \u0627\u0644\u062d\u0644\u0632\u0648\u0646\u064a)<\/strong>\u00a0\/\u00a0HSAW\uff08Helical Submerged Arc Welding\uff09<\/strong>processes, with diameters commonly ranging from 16 inches (406 mm) to over 80 inches (2032 mm)<\/strong>.<\/p>\n\n

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1<\/span>Common Large Diameter Steel Pipe Types<\/a><\/span><\/div>\n
2<\/span>Standards and Certifications for Large Diameter Steel Pipe<\/a><\/span><\/div>\n
3<\/span>Applications of Large Diameter Steel Pipes<\/a><\/span><\/div>\n
4<\/span>Top Large Diameter Steel Pipe Manufacturers<\/a><\/span><\/div>\n
5<\/span>Why Choose\u00a0ALLLAND Pipes\u00a0as Your Large Diameter Steel Pipe Manufacturer?<\/a><\/span><\/div>\n
6<\/span>\u0627\u0644\u062e\u0627\u062a\u0645\u0629<\/a><\/span><\/div>\n<\/div>\n<\/div>\n\n

Common Large Diameter Steel Pipe Types<\/strong><\/h2>\n\n
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\u0646\u0648\u0639 \u0627\u0644\u0623\u0646\u0628\u0648\u0628<\/strong><\/td>\n\u0639\u0645\u0644\u064a\u0629 \u0627\u0644\u062a\u0635\u0646\u064a\u0639<\/strong><\/td>\nTypical Size Range<\/strong><\/td>\n\u0627\u0644\u062a\u0637\u0628\u064a\u0642 \u0627\u0644\u0646\u0645\u0648\u0630\u062c\u064a<\/strong><\/td>\n<\/tr>\n
\u0623\u0646\u0627\u0628\u064a\u0628 LSAW<\/strong><\/td>\nJCOE \/ UOE forming + Submerged Arc Welding (SAW)<\/td>\nOD: 16″\u2013<\/strong>6<\/strong>0″ (406 mm\u2013<\/strong>1524<\/strong>\u00a0mm)<\/strong>WT: 6\u201340 mm (customized available)<\/td>\nOil & gas transmission pipelines, offshore pipelines, high-pressure pipeline systems<\/td>\n<\/tr>\n
\u0623\u0646\u0627\u0628\u064a\u0628 SSAW<\/strong><\/td>\nSpiral forming + Submerged Arc Welding (SAW)<\/td>\nOD: 8″\u2013100″ (219 mm\u20132540 mm)<\/strong>WT: 5\u201325 mm (customized available)<\/td>\nWater transmission pipelines, piling, municipal pipelines, low-pressure pipeline systems<\/td>\n<\/tr>\n
Seamless Pipe (SMLS)<\/strong><\/td>\nHot rolling \/ hot extrusion \/ cold drawing<\/td>\nOD: 1\/2″\u201324″ (21.3 mm\u20136<\/strong>6<\/strong>0 mm)<\/strong>WT: 2\u201360 mm (depending on size)<\/td>\nHigh-pressure applications, boilers, petrochemical equipment, power plants<\/td>\n<\/tr>\n
\u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0645\u062a\u0641\u062c\u0631\u0627\u062a \u0645\u0646 \u0645\u062e\u0644\u0641\u0627\u062a \u0627\u0644\u062d\u0631\u0628<\/strong><\/td>\nElectric Resistance Welding<\/td>\nOD: 1\/2″\u20132<\/strong>6<\/strong>” (21.3 mm\u2013610 mm)<\/strong>WT: 1\u201325 mm<\/td>\nStructural applications, water pipelines, gas distribution, mechanical applications<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n\n

Standards and Certifications for Large Diameter Steel Pipe<\/strong><\/h2>\n\n
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\u0642\u064a\u0627\u0633\u064a<\/strong><\/td>\n\u0627\u0644\u062a\u0637\u0628\u064a\u0642<\/strong><\/td>\n<\/tr>\n
API 5L<\/a><\/td>\n\u062e\u0637\u0648\u0637 \u0623\u0646\u0627\u0628\u064a\u0628 \u0627\u0644\u0646\u0641\u0637 \u0648\u0627\u0644\u063a\u0627\u0632<\/td>\n<\/tr>\n
\u0622\u064a\u0632\u0648 3183<\/a><\/td>\nPipeline systems<\/td>\n<\/tr>\n
ASTM A252<\/a><\/td>\nSteel piling<\/td>\n<\/tr>\n
EN 10219<\/a><\/td>\nStructural applications<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n\n

Applications of Large Diameter Steel Pipes<\/strong><\/h2>\n\n

Large-diameter steel pipes are widely used in energy transportation, urban infrastructure, engineering construction, and offshore engineering due to their high pressure-bearing capacity, large transport capacity, and excellent structural stability.<\/p>\n\n

Due to long transportation distances, high pressures, and complex operating environments, oil and gas pipelines impose extremely strict requirements on steel pipe quality; typically, the following are used:<\/p>\n\n