These products are widely applied in petroleum, chemical, paper-making,hotels, construction, and medicine in ASTM,GB/T standard Features: 1) O.D.: 15~1220mm,models:15~273mm(tube/pipe OD range)2) W.T.: 1 - 25mm (we can also produce other specifications according to customers' requirements)3) Grades: 201, 202, 304, 304L, 310S, 316, 316L, 321, customers' requests available4) Standards: ASTM (ASME)5) ...