Carbon Steel WN Flange 1.Size:DN10 to DN1000 2. ... steel,stainless steel Carbon Steel Weld-neck Flange1), Name: WN flange2), Sizes: From DN10 to DN1000, PN 6 - ... GOST, BS, JIS and customers' drawings for special use5), Types: WN, SO, BL, Plate, Thread, Socket and etc6), Process: Casting7 ... etcplate, slip-on, welding neck, blind, threaded etc.Class150,300,600,900,150041/2”—64”BS4504, PN16, PN25, PN40, ...