carbon steel WN flange 1.Size:DN10--DN800 2.Standard:ANSI GB JIS DIN 3.Material:317L,316L,304H/L, ... ,347H, carbon steel WN flange 1.Size:DN10--DN800 2.Standard:ANSI GB JIS DIN 3.Material:317L,316L,304H/L ... neck, blind, thread2) Materials: Carbon steel, stainless steel, alloy steel3) Standard: ANSI, ASME, JIS, DIN4) Size: 1/2"-5, 000mm5) Surface ...