JIS & ANSI SLIP-ON SOCKET-WELDING S.S FORGED SWRF 900# Stainless Steel Flange Lead time:20-30 days Cert: BV, ... ,Korea,etc Material316L, 316, 304L, 304,Class150#,300#,400#,600#,900#,1500#,2500#Production processraw material--cutting--heating--forging--heat treatment ... JIS & ANSI SLIP-ON SOCKET-WELDING S.S FORGED SWRF 900# Stainless Steel Flange