... casting carbon steel flange 1.Carbon steel 2.Casting and forging working 3.High quality , competitive price 4.Fine surfa Precision casting carbon steel ... (304,304L,316,316L,317L,321,321H,310S,,904L,etc), carbon steel.2.)Standard: ASME, ANSI, API, JIS, JPI, ... or as your request. The specifications can be designed and satisfied for customers special requirements. Precision casting carbon steel flanges