1. Available in Various Shapes and Sizes 2.Stainless Steel Flanges as Well for Use in Various Industries. Type: welding neck, slip-on, threaded, lap joint, socket welding, and blind Manufacturing standards: API, ANSI, BS, JIS, UNI, MSS, and SP Pressure: ANSI class 150 to 2,500 Size range: 1/2 to 56 inches (DN15 to DN1,400mm)