... Diameter Pipe ,Coupling and all kinds of material Seamless Steel Pipe.Annual output near 200, ... is from SCH5-SCHXXS.Standard:ASME B36.10M-1996,API,ANSI,GB,MSS,JIS,DIN.Material:ASTM A106/A53 GRB/API 5L/ API ... the company and cooperate with each other. It mainly engaged in the Casing ,Tubing and ... is from SCH5-SCHXXS.Standard:ASME B36.10M-1996,API,ANSI,GB,MSS,JIS,DIN.Material:ASTM A106/A53 GRB/API 5L/ API ...