Stainless Steel threaded fittings likes Unions, Elbows, Tees, Nipples, Couplings, Sockets, Bushings etc. are made from bar stock, forging or investment casting depending on the part design and size. Threaded Stainless Steel fittings are commonly used in applications such as hydraulic, fluid power, pneumatic, domestic water, fire protection and industrial cooling water systems. Heavy duty fittings can withstand good pressure and are corrosion-resistant.