... Type:SSAW,LSAW,Seamless 5)Standard:ASTM,ANSI Type astm a53 sch 40 steel pipe SizeSeamless Pipe: 1/2”~48”, ... ,XXS and so on.StandardsANSI B16.9 / 16.28, ASTM A53/A106, API 5L, ASME B36.10M---1996, DIN2605 / 2615 ... / 2616, JIS P2311/2312MaterialASTM A106,A53GRB,A53-A,A106-A,A192,A226,A315-B,A106-B,A178 ... our website , your inquiries will be reply promptly! astm a53 sch 40 steel pipe