... steel(ASTM A 53GRA .A/B),Alloy ,SS Astm,Api5L,Api5CT standard Professional supplier of Seamless steel pipeWe manufacture spiral steel pipe with ... requirements. 1.Commodity Nameseamless stainless steel pipe astm a312 tp316/316l2.StandardASTM A106 ,ASTM A53 , ASTM A179, ASTM A210 ,ANSI B36.10, GB 3087 ... steel pipes.10.MaterialA53(A,B), A106(B,C) Q235B,Q345B,16Mn, 10#.20#,45# Gr.B,X42,X46,X52,X56,X60 ...