The Seamless Steel Pipes include API 5CT Tubing, API 5CT Casing, Tubing and Casing Coupling, API 5DP Drill Pipe, API 5L Line Pipe, ASTM A53, ASTM A106, ASTM A335, ASTM A213, ASTM A179,ASTM A192, ASTM A210, ASTM A333, DIN 17175, BS 3059:Part2, EN 10216, JIS G3454, JIS G3456, JIS G3461, ASTM A519, EN 10210, DIN 1629, and DIN 2391.