Home » Forged Steel Fittings » ASTM A105 SOCKET WELD 90 DEGREE ELBOW ASME B16.11


What is a SOCKET WELD-90 DEGREE ELBOW,what about its speicification and advantage

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What is a Socket welding elbow?

Socket welding (SW) is used for welding pipes and fittings including reducers, tees and elbows. Socket weld pipe fittings are used to permanently join pipes that are inserted into a recess in the fitting, flange or valve. Once correctly inserted, fillet type sealing welds are applied to join the pipe to the fitting.Forged elbows are used to change the direction of the piping system by 45 or 90 degrees. Forged elbows are manufactured according to ASME B16.11 in various material grades, either with socket weld or threaded pipe connections. A special type is the so-called “street elbow”.

SPECIFICATION Of Socket Weld Elbows

Type 90degree and 45degree
Shape straight and reducing
Size Range 1/8″-4″/DN6-DN100
PressureRating Class 3000lbs/600lbs/9000lbs
Standard GB/T14383,ASME B16.11,BS3799
Crabon Steel  ASTM A105/A105N
Low Tem Crabon Steel  ASTM A350 LF2/LF3
Pipeline Steel  ASTM A694 F42/46/50/56/65
Alloy Steel  ASTM A182 F11/12/5/9/91/92/22
Stainless Steel A182 F304/304L/304H   F316/316L F317 F310S  F321 F347 F904L

Advantages And Disadvantages

Advantages of socket weld fittings:

There is no the problem to make the bevel end.

There is no the problem to adjust.

The welding position can be adjusted to flat welding.

Disadvantages of socket weld fittings:

• The welders should ensure that the expansion gap between the socket shoulder and the pipe is 1.6mm.

• Internal cracks and expansion gaps in the socket weld system thought can promote corrosion. It is for this reason that they are considered less suitable for radioactive or corrosive applications


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