I. Seamless tubes/ pipes
① Carbon steel tubes/ pipes
② Stainless steel tubes/ pipes
③ Alloy steel tubes/ pipes … Mn, Ni, Ti, Mo, Cr steel tubes/ pipes
Size: Cold drawn Φ8~Φ168.3mm, Hot rollingΦ114.3~Φ610mm
Standard and material:
① ASTM A53/ A106/ A179/ A192/ A210/ A213/ A500
API 5L/ 5CT
Material: J55, N80, T11, T22, T5, T1
② DIN 17175/ 2448/ 2391
Material: st35.8, st37
③ JIS G3441/ G3444/ G3445/ G3454/...
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