... Stainless steel flange, Carbon steel flange Carbon Steel Flange 1)Type:Slip on flange, Slip-on welding flange, Welding neck flange, Long welding neck flange, Blind flange, Socket welding flange, Threaded flange, Lap joint flange etc ... Ratings:PN6, PN10, PN16, PN25, PN40 AND PN644)Materials:Carbon steel, Stainless steel and Alloy steel etc.5)Standards:ANSI, API, BS, DIN, UNI ...