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