1.best quality 2.competitive price 3.Fastest delivery 4.Fastest offer 5.unfailing service Production A53 Gr.B seamless steel pipe Brand Wuxi Specification 8mm-400mm (1/4''-16'')× 1mm-30mm Standard GB, ASTM, API 5L, API 5CT,DIN, JIS and so on Out Diameter8mm-400mm (1/4''-16'') Wall Thickness 1mm-30mm Grade 10#,20#,45#,16Mn,27SiMn,12Cr1MoV,Q235, ST42,ST52,A106-a,A106-b, and so on Length 6-12m. As ...