... quality , competitive price 4.Fine surfa Precision casting carbon steel flanges1.)Material: Stainless steel(304,304L,316, ... 316L,317L,321,321H,310S,,904L,etc), carbon steel.2.)Standard: ASME, ANSI, API, JIS, ... JPI, DIN, UNI, BS, AS3.)Type: Plate Flange,Flat Flange,Slip-on Flange,Welding Neck Flange,Long Welding Neck ... for customers special requirements. Precision casting carbon steel flanges