Pipe Fitting Standards

API Standard

• API 671 - Special Purpose Couplings for Pumps - Reciprocation

ASME Standards

• ASME B16.1 - Cast Iron Pipe Flanges and Flanged Fittings
• ASME B16.3 - Malleable Iron Threaded Fittings
• ASME B16.4 - Gray Iron Threaded Fittings
• ASME B16.9 - Factory-Made Wrought Buttwelding Fittings
• ASME B16.11 - Forged Fittings, Socket-Welding and Threaded
• ASME B16.14 - Ferrous Pipe Plugs, Bushings, and Lock nuts With Pipe Threads
• ASME B16.15 - Cast Bronze Threaded Fittings, Class125 and 250
• ASME B16.18 - Cast Copper Alloy Solder Joint Pressure Fittings
• ASME B16.22 - Wrought Copper and Copper Alloy Solder Joint Pressure Fittings
• ASME B16.24 - Cast Copper Alloy Pipe Flanges and Flanged Fittings: Classes 150, 300, 600, 900, 1500, and 2500
• ASME B16.25 - Buttwelding Ends
• ASME B16.26 - Cast Copper Alloy Fittings for Flared Copper Tubes
• ASME B16.39 - MalleableIron Threaded Pipe Unions, Class 150, 250, and 300
• ASME B16.42 - Ductile Iron Pipe Flanges and Flanged Fittings: Classes 150 and 300

ASTM Standards

• ASTM A105 - Specification for Carbon Steel Forgings for Piping Applications
• ASTM A181 - Specification for Carbon Steel Forgings, for General-Purpose Piping
• ASTM A182 - Specification for Forged or Rolled Alloy and Stainless Steel Pipe Flanges, Forged Fittings, and Valves and Parts for High-Temperature Service
• ASTM A193 - Specification for Alloy Steel and Stainless Steel Bolting Materials for High Temperature Service
• ASTM A194 - Specification for Carbon and Alloy Steel Nuts for Bolts for High Pressure and High Temperature Service
• ASTM A234 - Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Moderate and High Temperature Service
• ASTM A350 - Specification for Carbon and Low-Alloy Steel Forgings, Requiring Notch Toughness Testing for Piping Components
• ASTM A403 - Specification for Wrought Austenitic Stainless Steel Piping Fittings
• ASTM A420 - Standard Specification for Piping Fittings of Wrought Carbon Steel and Alloy Steel for Low-Temperature Service
• ASTM A694 - Specification for Carbon and Alloy Steel Forgings for Pipe Flanges, Fittings, Valves, and Parts for High-Pressure Transmission Service
• ASTM B21 - Specification for Naval Brass Rod, Bar, and Shapes
• ASTM B98 - Specification for Copper-Silicon Alloy Rod, Bar and Shapes
• ASTM B150 - Specification for Aluminum Bronze Rod, Bar, and Shapes
• ASTM B160 - Specification for Nickel Rod and Bar
• ASTM B164 - Specification for Nickel-Copper Alloy Rod, Bar, and Wire
• ASTM B166 - Specification for Nickel-Chromium-Iron Alloys (UNS N06600, N06601, N06603, N06690, N06693, N06025, and N06045) and Nickel-Chromium-Cobalt-Molybdenum Alloy (UNS N06617) Rod, Bar, and Wire
• ASTM B247 - Specification for Aluminum and Aluminum-Alloy Die Forgings, Hand Forgings, and Rolled Ring Forgings
• ASTM B361 - Specification for Factory-Made Wrought Aluminum and Aluminum-Alloy Welding Fittings
• ASTM B366 - Specification for Factory-Made Wrought Nickel and Nickel Alloy Fittings
• ASTM B381 - Specification for Titanium and Titanium Alloy Forgings
• ASTM B462 - Specification for Forged or Rolled UNS N06030, UNS N06022, UNS N06035, UNS N06200, UNS N06059, UNS N06686, UNS N08020, UNS N08024, UNS N08026, UNS N08367, UNS N10276, UNS N10665, UNS N10675, UNS N10629, UNS N08031, UNS *N06045, UNS N06025, and UNS R20033 Al
• ASTM B564 - Specification for Nickel Alloy Forgings

AWWA Standards

• AWWA C110 - Ductile-Iron and Gray-Iron Fittings, 3 Inch Through 48 Inch (75 mm Through 1200 mm), for Water and Other Liquids
• AWWA C208 - Dimensions for Fabricated Steel Water Pipe Fittings

ISO Standards

• ISO 5251 - Stainless steel butt-welding fittings
• ISO 5256 - Steel pipes and fittings for buried or submerged pipe lines -- External and internal coating by bitumen or coal tar derived materials

MSS Standards

• MSS SP-43 - Wrought Stainless Steel Butt-Welding Fittings Including Reference to Other Corrosion Resistant Materials
• MSS SP-53 - Quality Standards for Steel Castings and Forgings for Valves, Flanges and Fittings and Other Piping Components - Magnetic Particle
• MSS SP-54 - Quality Standards for Steel Castings and for Valves, Flanges and Fittings and Other Piping Components - Radiographic
• MSS SP-55 - Quality Standards for Steel Castings and for Valves, Flanges and Fittings and Other Piping Components - Visual
• MSS SP-75 - Specifications for High Test Wrought Buttwelding Fittings
• MSS SP-73 - Brazing Joints for Copper and Copper Alloy Pressure Fittings
• MSS SP-83 - Class 3000 Steel Pipe Unions, Socket-Welding and Threaded
• MSS SP-97 - Integrally Reinforced Forged Branch Outlet Fittings — Socket Welding, Threaded, and Buttwelding Ends
• MSS SP-106 - Cast Copper Alloy Flanges and Flanged Fittings Class 125,150, and 300
• MSS SP-119 - Factory-Made Wrought Belled End Socket Welding Fittings

SAE Standards

• SAE J514 - HydraulicTubeFittings