MSS SP-75 SPECIFICATION FOR HIGH-TEST, WROUGHT, BUTT-WELDING FITTINGS MSS SP-75  covers factory-made, seamless and electric fusion-welded carbon and low-alloy steel, butt-welding fittings for use in high pressure gas and oil transmission and distribution systems, including pipelines, compressor stations, metering and regulating stations, and mains. MSS SP-75 governs dimensions, tolerances, ratings, testing, materials, chemical and tensile properties, heat…

ASME B16.11 Forged fittings, Socket-Welding and Threaded This Standard covers ratings, dimensions, tolerances, marking, and material requirements for forged fittings, both socket-welding and threaded. Types of fittings covered by this Standard are shown in table below, by class and size range. Types of Fittings by Class Designation and NPS Size Range Description  Socket–Welding Threaded CL3000…

ASME B16.9 Factory-made wrought buttwelding fittings This standard covers overall dimensions, tolerances, ratings,testing,and markings for factory-made wrought buttwelding fittings in sizes NPS /2 through NPS 48 (DN 15 through DN 1200). Types of BW fittings in ASME B16.9 Long Radius Elbows Long Radius Reducing Elbows Long Radius Returns Short Radius Elbows Short Radius Returns 3D…

1. Elbow 90°   long radius 2. Elbow 45° 3. Elbow 90°   short radius 4. Elbow 180° long radius 5. Elbow 180° short radius 6. Tee straight 7. Tee reducing 8. Reducer concentric 9. Reducer eccentric 10. End cap 11. Lap joint Stub End