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Socket Weld Fittings

General Information on Socket Weld Fittings


Quality Standard for Socket Weld Fittings

High quality fittings all made and controlled to the relevant standards such as: ASME, ASTM, BS and DIN/WERKSTOFFE.

Sizes Available for Socket Weld Fittings

Socket Weld Fittings are available available in sizes from 1/8” through to 4”.

Dimensions & Pressure Ratings for Socket Weld Fittings

BS3799 and ANSI B16.11
3000lb through to 9000lb
Sch 10s through to Sch XXS and heavier.

Sizes Available for Reinforced Branch Outlets

1/4” through to 24”
Dimensions to manufacturers standards.
Sch 10s through to Sch XXS and heavier.

Special fittings according to customer drawings.

Material Grades for Socket Weld Fittings

Socket Weld Fittings are available in the following material grades:


Stainless Steel

  • A182 F304/L
  • F310
  • F316/L
  • F321/H
  • F347/H
  • F410
  • F440
  • 904L

Carbon Steel

  • A105

6% Molly & 6 Moly

  • A182 F44

Low Temperature Steel

  • A350 LF2, LF3, LF6

Alloy Steel

  • A182 F1, F5, F9, F11, F12, F22, F91

High Yield

  • A694 F42, F52, F60, F65, F70

Nickel Alloys

  • 200, 400, K500, 600, 625, 800, 825

6% Moly / Duplex & Super Duplex

  • A182 F51, A182 F53, F55,
  • UNS S32750, UNS S32760



  • ALLOY 20
  • ALLOY C276
  • ALLOY B2


  • 5083, 5154, 5251, 6061, 6063, 6082

Unusual Grades

  • Bronze
  • Brass
  • Copper
  • Cupro Nickel
  • Titanium

Socket Weld Elbow Fittings

The Socket Weld Elbow Fitting is a pipe fitting installed between two lengths of pipe or tube allowing a change of direction, usually 90° or 45°. The ends can be be machined for screwed (usually female), or socketed. When the two ends differ in size, it is called a Reducing or Reducer elbow.

Most elbows are available in short radius or long radius of types. The short radius elbows have a center to end distance equal to the NPS in inches, while the long radius is 1.5 times the NPS in inches.

Socket Weld Tee Fittings

Socket Weld Tee Fitting is used to either combine or split a fluid flow. The most common Socket Weld Tees have the same inlet and outlet sizes, but ‘Reducing’ Socket Weld Tees are available as well.

Socket Weld Cross Fittings

Socket Weld Cross Fitting has one inlet and three outlets, or vice versa.

Socket Weld Couplings

Socket Weld Pipe Coupling fitting connects two pipes to each other. If the material and size of the pipe are not the same, the fitting may be called a ‘Reducing Coupling’ or Reducer, or sometimes an Adapter.

Socket Weld Cap Fittings

Socket Weld Cap is a type of pipe fitting, usually liquid or gas tight, which covers the end of a pipe to stop flow. A Cap has a similar function to a Plug.

Socket Weld Union Fittings

Socket Weld Union Pipe Fitting is similar to a Coupling, except it is designed to allow quick and convenient disconnection of pipes for maintenance or fixture replacement. While a Coupling would require either solvent welding or being able to rotate all the pipes adjacent as with a Threaded Coupling, a Union provides a simple nut transition, allowing easy release at any time.


Pipe Nipples and Barrel Nipples

Pipe Nipple or Barrel Nipple is defined as being a short stub of pipe which has two male ends. Nipples are commonly used for plumbing and hoses, and second as Valves for funnels and pipes.

Concentric Swages and Eccentric Swages

The most common use of Swaging is to attach fittings to pipes or cables (also called wire ropes); the parts loosely fit together, and a mechanical or hydraulic tool compresses and deforms the fitting, creating a permanent joint. Pipe flaring machines are another example. Flared pieces of pipe are sometimes known as “Swage Nipples,” “Pipe Swages,” or “Reducing Nipples.

Socket Weld Reducing Inserts

This is a Socket Weld version of a Bush. Reducer Insertscomply with MSS Standard SP-79. They enable standard Socket Weld Fittings to be used for making any combination of pipe line reductions, quickly and economically. Socket Weld Reducer Inserts serve the same purpose as Threaded Reducing Bushings with threaded fittings.

Buttweld Branch Outlet Fittings

“Outlet” is a generic term for all branch type connections. They can come with Threaded, Socket Weld, and Butt Weld end connections. The most common types are used in place of a Tee. A hole is cut in the side of the pipe, the Outlet is welded in place over the hole and then the additional length of pipe is attached to the Outlet.

Similar to reducing Tees, Outlets are usually described by two sizes. The Run or Header size refers to the pipe on which the Outlet is mounted. The Outlet or Branch size refers to the length of pipe branching off of the run.

This type of fitting is contoured to match the curve on the Header Pipe and beveled on the Branch side to mate up with a beveled piece of the branch pipe.

Welding Bosses

Welding Bosses 3000# & 6000#.

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