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Piping Systems & Welding

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Socket Welding

Spider Socket Welding Machine

The Spider™ 125 with universal clamping system is the preferred equipment for quick and accurate socket fusion field installations of 63mm to 125mm polypropylene pipe.

The lightweight, compact device features a worm gear drive with parallel link system to bring pipe and fittings together evenly and under control. It features a universal clamping system that can accommodate any size of pipe or coupling, eliminating the need for inserts.

The features of the Spider™ 125 allow a single technician to properly align, heat, fuse and cool the pipe. Because the Spider is non back-drivable, constant pressure is maintained throughout the process.

The Spider™ 125 has proven to be an exceptional tool for performing socket fusions in overhead, vertical and tight work spaces. A full assortment of heaters and heater adapters are available from Asahi/America for pipe sizes in the 63mm to 125mm range.


Data Sheet

Operations Manual

Ideal Applications Include:

Please refer to the Welding Selection Chart for ideal applications.


Size Range:

63mm to 125mm (2" to 4-1/2")


See Welding Selection Chart


See Welding Selection Chart

Dimensions (open):


Shipping Dimensions:


Shipping Weight:

50 lbs.


  • Hand-powered
  • No inserts necessary
  • Universal clamping jaw system fits all pipe brands and fittings
  • Non back-drivable gearing, self-locking
  • Two-position support handle
  • Lightweight and compact
  • Self-centering
  • Wide jaws provide stability on pipe
  • Heavy-duty plastic shipping case included


  • Socket Fusion


  • Requires heat source (either a 2” or 4” hand socket welder, Asahi/America offers them for purchase or rental separately)