... Flanges, Lap Joint Flanges, Ring joint Flanges, Long Welding Neck Flanges,Figure 8 Blanks, PRESSURE GRADE: Class150, Class300,Class600, ... DIN2633,DIN2634,DIN2635,DIN2636,DIN2637, DIN2638,DIN2673 Types: Welding Neck Flanges ,Slip on Flanges,Threaded Flanges Socket welding fanges, ... Flanges (101),Loose Plate Flanges (102),Loose Plate with welding-neck Flanges(104),Blank Flanges (105) PRESSURE GRADE;PN2. ...