Carbon steel (CS) butt weld fittings are piping components built to ASME B16.9 standards. They range from 1/2' to 48' in size, using material grades like ASTM A234 WPB. They match pipe schedules (Sch 40, Sch 80) to handle high pressures and change fluid flow directions. Material Specifications • Standards: ASTM A234 (WPB, WPC), ASTM A420 (Low temp), ASTM A860 (High strength) • Tensile Strength: Minimum 415 MPa (60, 200 psi) for WPB • Yield Strength: Minimum 240 MPa (34, 800 psi) for WPB Dimensional & Design Standards • General Dimensions: ASME B16.9 (Factory-made wrougth buttweld fittings) • Short Radius Elbows: ASME B16.28 • End Preparation: ASME B16.25 (Beveled ends for welding) • Large Diameter MSS Standards: MSS-SP-75 Sizes and Schedules • Size Range: 1/2 inch nominal pipe size (NB/NPS) up to 48 inches. • Wall Thickness Schedules: Sch 10, Sch 40, Sch 80, Sch 160, STD, XS, XXS. Types of Fittings • Elbows: 45-degree and 90-degree (Long or Short radius) • Tees: Equal and Reducing tees • Reducers: Concentric and Eccentric reducers • Caps & Stub Ends: Pipe end closures and joint supports

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