1.Stainless steel flange 2.investment casting. 3.stainless steel, AISI 316. 4.machining, hole tight tolerance +0.03-0. Stainless steel flangeProcess: investment casting,stainless steel, AISI 316machining ... : anneal, quenching, normalizing, carburizingpolishing, plating CNC Machining:CNC lathes, milling, drilling, planning, grinding machines and assembly also available. Stainless steel flange