... working 3.High quality , competitive price 4.Fine surfa Precision casting carbon steel flanges1.)Material: Stainless steel(304,304L,316,316L ... Flange,Blind Flange,Stocket Welding,Thread Flange,Screwed Flange,Lap Joint Flange.4).Process :making RTJ, heat treatment, hot dip galvanize ... can be designed and satisfied for customers special requirements. Precision casting carbon steel flanges