Pressure: 2000Lbs, 3000Lbs, 6000Lbs, 9000Lbs Specification: Elbow, Tee, Cross, Square plug, Hexgean Plug, Nipple, Cap, Coupling, Outlet for thread type and socket welding. Material: Carbon Steel, Stainless Steel Size Rate: From 1/8" to 6" Standard: ANSI B16.11 Thread: ISO, DIN, NPT, BSPT. Size rate: from 1/8" to 6".