... , welding-neck, lap-joint, threaded, blind and socket-welding. Forged Carbon Steel Flanges:Type: slip-on, welding-neck, lapjoint, threaded, blind and socket ... , 2527,2631 (PN6) ; DIN2576,2527,2632 (PN10); DIN2543,2527,2533 (PN16) DIN2544,2527,2634 (PN25) ; DIN2545,2527,2635 (PN40) JIS B2220 ... , TGPacking: Wooden box, or as per customer's request. Forged Carbon Steel Flanges