#TAJENTERPRISES ASTM A403 Stainless Steel Pipe Fittings refers to the material. Tee fittings: Connect three pipes to create a T shape, often used in pipelines for gas and liquid transport Reducer fittings: Connect pipes of different sizes, allowing fluids to flow from larger to smaller pipes or vice versa Coupling fittings: Connect two pipes together securely and leak-proofly Cross fittings: Connect four pipes to form a cross shape, also commonly used in pipelines for gas and liquid transport Concentric reducers: Have a symmetrical shape and are used when the pipes being connected have the same centerline Eccentric reducers: Have an asymmetrical shape and are used when the pipes being connected have different centerlines Full, half, and quick couplings: Different types of couplings used to join two pipes or tubes together Elbows: Can be used to change the flow direction Bends: Can be used in 45 and 90 degree formations