Standard: API 5L, API 5CT, ASTM A106/A53, ASTM A519, JIS G 3441, JIS G3444, JIS G3445 DIN 2391, EN10305, EN10210, ASME SA106, SA192, SA210, SA213, SA335, DIN17175, ASTM A179� Certificate: API 5L PSL1 / PSL2, API 5CT, ISO 9001-2008 Out Diameter: 1/8 36inch (10.3-914.4mm) Wall Thickness: 1.73-40mm Length: Random Length, Fixed Length, SRL, DRL Usage: Applicable to the general structure, mechanical structure, water wall panel, economizer, super heater, boiler and heat exchanger with seamless steel tubes, and to transport liquid, gas, oil etc.