... on,thread,socket weld,blind 3)Material:A105,A182,Q235,A3,20# 4)Size:DN15-DN1000 Forged Process,all kind of flanges ... .Size 1/2"-48",DN15-DN1000.Pressure :150LBS-3000LBS,6bar-250bar. ... steel,stainless steel ,alloy steel ASTM A 105, A182, Q235,A3,20#,16Mn,0Cr18Ni9,1Cr18Ni9Ti and so on.Type:SOP,SOH ...