Standard:API 5L, API 5CT, ASTM A106/A53, ASTM A519, JIS G 3441, JIS G3444, JIS G3445 ... , EN10210, ASME SA106, SA192, SA210, SA213, SA335, DIN17175, ASTM A179… Out Diameter:1/8 – 30 inch (10.3-762mm ... : GR B, X42, X46, X56, X60, X65, X70 ASTM A53/A106: GR A, GR B, GR C ASME SA106 ... , economizer, super heater, boiler and heat exchanger with seamless steel tubes, and to transport liquid, gas, oil etc.