carbon steel WN flange 1.Size:DN10--DN800 2.Standard:ANSI GB JIS DIN 3.Material:317L,316L,304H/L,321,310S,347H, carbon steel WN flange 1.Size:DN10--DN800 2.Standard:ANSI GB JIS DIN 3.Material:317L,316L,304H/L,321,310S,347H,Forged carbon steel WN flange1) Flange varieties: Plate, slip-on, welded neck, blind, thread2) Materials: Carbon steel, stainless steel, alloy steel3) Standard: ANSI, ASME, JIS ...