... ,UNI,BS4504,EN1092-1 Material:SS 1.Product detailsStainless Steel Welding Neck FlangeSize:3/4"-30" 150LB-2500LB.ISO9001 and CE ... 3/4"-30". Kinds Slip on flanges,welding neck flanges,blind flanges,plate flanges,socket welded flanges,threaded flanges,lap joint flanges ...