SS ASTM Carbon Seamless Steel Pipe 1:ASTM A106/A53-B API5L-B 2:WT:2-32mm OD:10-711mm 3Certificates:ISO ASTM A106 Carbon ... , JIS G3454, G3455,CertificateAPI CertificateMaterial ASTM A106 Gr B, A 53, A179-C,A315-B, A333-1.6, Q235,Q345B, ST 37 ... , ST42-2, ST45-8, STPG38, STB35, STPG42, etc. Length5-12M ... /C at sight ASTM Seamless Carbon Steel Pipe A106/A53-B