Stainless Steel Flange 1.Size:1/2"(DN15) to 48"( ... Standard:ASME,ANSI,API,DIN,BS,GOST Stainless Steel Flange MaterialCarbon Steel:A105(N) C22.8 ST-37. ... 48"PressureClass150, 300, 600, 900 1500 and 2500PN6, PN10, PN16, PN25, PN40 and PN64JIS 5K, 10K, 16K and 20KStandardASME ... to oil field and refinery as Steel Pipes, Pipe Fittings, Flange, Valves, Gasket, Petroleum Machinery, Fasteners, UV sterilizer, ...