... steel flange2) Standard: ASME, ANSI, API, JIS, JPI, DIN, UNI, BS, AS3) Material: 316L, 316Ti, 304L, 321, 321H, Rst37.2, C22 ... customer's requirementour featured products as follows:steel pipes and pipe fittings, such as saw pipes, oil pipes, ERW pipes, seamless ... us know,We will be happy to give you details. BS stainless steel Welding Neck Flange