Our company's large-diameter submerged arc welded steel pipes, with outer diameters ranging from 457 to 1422mm and wall thicknesses ranging from 8mm to 50mm, are widely used in many global market fields, including oil and gas transportation, medium, high and low temperature pressure vessel pipelines, high-rise building construction, and marine pile pipes. This product strictly complies with and meets a number of international and domestic standards, including China GB/T9711-2017, US API SPEC 5L, Russian GOST20295-85, US ASTM A671/A672, ASTM A691, ASTM A252, AWWA C200, European CE PED/CPR and German AD2000, etc., to ensure stable and reliable application under various pressure conditions.
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