Model Number: Outer Diameter:20*20-600*600mm Brand Name: WXT Key Specifications/Special Features: Standard: API, ASTM, BS, DIN, GB, JIS, API 5CT, API 5L, ASTM A106-2006, ASTM A179-1990, ASTM A513-2007, ASTM A53-2007, ASTM A53M-2007, BS 1139, BS EN10219, BS EN10296, DIN EN 10217-1-2005, GB 13296-2007, JIS C8305-1999, JIS G3101, JIS G3441Grade: 10#-45#, 16Mn, A53-A369, API J55-API P110, Q195-Q345, ST35-ST52, 10#, 20#, 45#, 16Mn, A106(B,C), A179-C, A53(A,B), API J55, API L80, Q195, Q215, Q235, Q345, St37, St52Thickness: 0.3 - 26mmApplication: construction petrol industry furnitureTechnique: cold rolledCertification: API, ASTM, GB, JIS, BSSurface treatment: galvanized or 3PEItem: steel pipeColor: black, grayMaterials: carbon steelPacking: standard packageShape: round, square, rectangular