Pipe Fittings

A fitting or adapter is used in pipe systems to connect sections of pipe (designated by nominal size, with greater tolerances of variance) or tube (designated by actual size, with lower tolerance for variance), adapt to different sizes or shapes, and for other purposes such as regulating (or measuring) fluid flow.

Fittings allow multiple pipes to be connected to cover longer distances, increase or decrease the size of the pipe or tube, or extend a network by branching, and make possible more complex systems than could be achieved with only individual pipes

There are different types of pipe fitting used in piping. Pipe Fittings used in piping work are listed below.
• Elbow 90 deg& 45deg 180 deglong radius & short radius
• Tee ( equal tee & reducing tee)
• Reducer concentric &Eccentric Reducer
• STUB ENDS
• Union
• Coupling
• Adapters
• Olet (Weldolet, Sockolet, Elbowlet, Thredolet, Nipolet, Letrolet, Swepolet)
• Cross
• Cap
• Swage Nipple
• Plug
• Bush
• Expansion Joint
• Steam Traps
• Long Radius Bend
• Miter Bend
• Flanges
Mfgstd: B 16.9, B 16.11 , B 16.5
SEAMLESS ,ERW , & FORGED FITTINGS
END CONNECTION: SCREWED , SOCKET WELD , BUTT WELD PIPE FITTINGS

Socket weld and Threaded Pipe Fittings
Socket weld and Threaded Pipe Fittings are forged products and classified based on their pressure-temperature rating. They are available from NPS 1/8” to 4”. These fittings are available in four pressure-temperature rating classes.
• 2000 class fittings are available only in threaded type.
• 3000 & 6000 class fittings are available in both Threaded and Socket Weld types.
• 9000 class fittings are available in only the socket weld type.
Butt welded Pipe fittings such as carbon steel and stainless steel offer many advantages compared to threaded and socketweld fittings. The later are only available up to 4-inch nominal size whereas butt weld fittings are available in sizes from ½” to 72”. Some of the benefits of weld fittings are;
• Welded connection offers more robust connection
• Continuous metal structure adds to the strength of the piping system
• Butt-weld fittings with matching pipe schedules, offers seamless flow inside the pipe. A full penetration weld and properly fitted LR 90 Elbow, Reducer, Concentric reducer etc. offers gradual transition via welded pipe fitting.

All buttweld pipe fittings have beveled ends as per ASME B16.25 standard. This helps create full penetration weld without any extra preparation needed for the butt weld fitting.
Butt weld pipe fittings are most commonly available in carbon steel, stainless steel, nickel alloy, aluminum and high yield material. High yield butt weld carbon steel pipe fittings are available in A234-WPB, A234-WPC, A420-WPL6, Y-52, Y-60, Y-65, Y-70. All WPL6 pipe fittings are annealed and are NACE MR0157 and NACE MR0103 compatible.

Pipe Fittings dimensions of the fittings must meet the requirements of the standard,
• For Wrought Product (WP) Dimension is covered in
o ASME B16.9- which is standard for Factory-made Wrought Butt-welding Fittings for size NPS 1⁄₂ to NPS 48” and
o And B16.28- which is standard for Wrought Steel Butt-Welding Short Radius Elbows and Returns for size NPS 1⁄₂ to NPS 24”
• For Forged Fittings, Dimensions are covered in,
o ASME B16.11- a standard for Forged Steel Fittings that covers Socket Welding and Threaded fittings

Specification(s) for Forged Fittings:

Specification(s) for Buttweld Fittings: