... :Stainless steel ANSI ASTM 304,S30400 304L,S30403,316,S31600,316L,S31603 OD:350-5000mm ID:100-4800mm 1)Name : Heavy Forged Carbon Steel ... Flange2)Material: Carbon Steel, Alloy Steel, Stainless Steel Carbon steel: AISI 1020,1035,1045,1046,GrD,Gr65 ...