... Carbon Steel Flange and Stainless Steel Flange be according to ANSI, DIN, UNI, BS, JIS, KS standards. the materials are ASTM ... , Q235, 20 Steel, S.S 304, 304L,316, 316L ANSI B16.5 / ASME B16.47 Standard: 150LBS, 300LBS, 600LBS, 900LBS, 1500LBS. Welding Neck ...