1.2-1/6 to 21-1/4 2.Welding Neck,Loose,Flat,Blind.Threaded Flange 3.2000psi-15000psi 4.API6A Type B Flange ... Size1/2"-72"TypeWeld Neck ... customers require. Din FlangeSizeDN10-DN2000TypeBlind flangesDin2527Flat flangesDin2573,2576Welding neck flangesDin2631,2632,2633,2634,2635,2636,2637,2638Lapped ...