... :2000.BV structure seamless pipeHebei shengtian (group) seamless steel pipe Co,. LtdWe manufacture spiral steel pipe with good ... BS standard and your additional requirements. 1.Commodity NameSeamless steel pipes2.StandardASTM A106 ,ASTM A53 , ASTM A179, ... ,ANSI B36.10, GB 5310,10# 20#, 45#,GB 3087, GB/T 8162 ,GB/T81633.Outer ... A106(B,C)Q235B,Q345B,16Mn, 10# 20#,45# S235JR, S355JR;ASTMA252 Gr.2,Gr.3; ...