sale API seamless casing tubing 1.Standard: BS,JIS,GB,ASME, ... J55,API K55,API L80,API P110 3.Out D sale API seamless casing tubing1.Standard: BS,JIS,GB,ASME,ANSI ... ,non woven cloth or bags,or as required.Test: Eddy current/X-ray test/intergranular corrosion/universal tensile tester/spectrum analyzer ...