... 3.High 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 ... be designed and satisfied for customers special requirements. Precision casting carbon steel flanges