Socket Welding Flanges, SW Flange
The socket welding flange is similar to a slip-on flange except it has a bore and a counterbore dimension. The counterbore is slightly larger than the O.D. of the matching pipe, allowing the pipe to be inserted into the flange similar to a slip-on flange. The diamter of the smaller bore is the same as the I.D. of the matchine pipe A restriction is built into the bottom of the bore which sets as a shoulder for the pipe to rest on. This is eliminates any restriction in flow when using a socket welding flange.
Specifications:

Socket Welding Flanges
- Size: 1/2” to 60”, DN 12mm to DN 1500mm
view...
- Pressure class: Class 150 to Class 2,500, PN 2.5 to PN 250
- Facing: RF / RTJ
- Material:
view...
- Cabon steel: A105, A350 LF2
- Stainless steel: A182 F304/F304L/F316/F316L/F321
- Alloy steel: F11, F12
- Packing: plywood case and plywood pallet
Uses of socket weld flanges:
- They are ideal for small diameter applications.
- They are used for high pressure applications.
- Socket weld flanges have an internal recess on the inside diameter which allow for a smoot flow of the process fluid.
- They create a smooth bore with the proper welding and grinding.
Note:
- Flange dimensions to ANSI B16.5.
- Dimensions "B" & "D" includes raised face thickness.
- Bore (SCH) "C" purchasess to Specity.
- Larger outlet sizes are avilable on applications.
- ANSI 150# / 300# 2mm Raised Face.
- ANSI 600# / 2500# 7mm Raised Face.
Standards, Dimensions & Weight