... , DIN2634, DIN2635, DIN2636, DIN2637,DIN2638, DIN2673BS4504, Types:Welding Neck Flange, Slip on Flange, Threaded Flange, Socket Welding Flange, Blind FlangePRESSURE GRADE:ASTM B16.5: 150LBS ... .48, B16.36, MSS SP44 Types:Welding Neck Flange, Slip on Flange, Threaded Flange,Socket Welding Flange, Blind Flange, Orifice Flange,Ring Joint Flanges, Long Welding Neck ...