Stainless Steel : ASTM A182 F304 304L 304H 316 316L 317 317L 321 310 347 904L etc.Carbon Steel : ASTM A105 A105N A694 F42465256606570 A350 LF3 A350 LF2, etc.Alloy Steel : ASTM A182 F1 F5 F9 F11 F22 F91 etc.Others : Monel, Nickel, Inconel, Hastalloy, Copper, Brass, Bronze, Titanium, Tantalum, Bismuth, Aluminium, High Speed Steel, Zinc, Lead, etc.Types : Elbow, Tee, Union, Cross, Coupling, Cap, Bushing , Plug, Swage Nipple, Welding Boss, Hexagon Nipple, Barrel Nipple, Welding Nipple, Parraler Nipple, Street Elbow, Hexagon Nut, Hose Nipple, Bend, Adapter, Insert, Cross, Weldolet, Elbowlet, Sockolet, Thredolet, Nipolet, Letrolet, etc.Size : 18 NB TO 4 NB. (Socketweld & Threaded)Class : 150# , 3000#, 6000#, 9000#.Also as per National & International Standard &Specification