Seamless steel pipe 1)Thickness:2.5-75mm 2)Outer Diameter:32-630mm3 3)Application:Fluid Pipe 4)Certification:API Factory Location:in tianjin china,produce seamless steel pipe. Standard:JIS, GB, DIN, ASTMStandard:GB 5310-1995, GB 3087-1999, GB/T 8163...Grade:10#-45#, A53-A369, ST35-ST52, Q195-Q345Grade:10#, 20#, 45#, A53(A,B), A106(B,C), St37...Thickness:2.41-59.54 mmSection Shape:RoundOuter ...