sale API seamless casing tubing 1.Standard: BS,JIS,GB,ASME,ANSI,DIN ... K55,API L80,API P110 3.Out D sale API seamless casing tubing1.Standard: BS,JIS,GB,ASME,ANSI,DIN2.Grade ... or Bevel ends.Packing: in bundle,wooden cases,non woven cloth or bags,or as required.Test: Eddy current/X-ray ...