Alloy steel seamless tube Certificate:ISO9001, API , Out diameter:13.7-219.1mm; Wall thickness:1.65 ... products' summary1) Cold drawn seamless steel tube2) Certificate: ISO9001-2000, API ,3) Standard: ASTM A210, ASTM-A192, ASTM-A213(T11/ ... /P23), ASTM-A519, ASTM-A106, ASTM-A53, ASTM-A179, API 5L , API 5CT, EN-10216, BS-3059, DIN17175, DIN 2440, DIN2448 ... L/C9) Mini order: 5 tons Alloy seamless steel tube