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Specialised Fabrication Equipment: Crafting Precision, Building Excellence

Sturdi Pipe Chain Clamp

The Mathey Dearman Sturdi Clamp is a chain clamp ideal for schedule 40 and below pipe alignment and reforming. Originally invented in 1930, Mathey Dearman offers the Sturdi Clamp as a lighter duty version of the Mathey Dearman Double Jackcrew Pipe Chain Clamp.

Traditional methods for aligning heavy wall pipe, such as ratchet cable pullers, lugs and bottle jacks are time consuming and inconsistent in the results they achieve, making them unsuitable for critical alignment applications.

All Mathey Dearman Sturdi Clamps feature stainless steel jack screws, jackbars and main blocks. The high rise jackbars and main block provide the strength to reform the pipe either side of the weld gap to eliminate Hi-Lo, whilst enabling the welder to weld the entire circumference of the pipe with the clamp in situ.

SFE_Sturdi Pipe Chain Clamp

Mathey Dearman Sturdi Clamp Includes

  • Nickel plated carbon steel or stainless steel duplex roller chain
  • Stainless steel single or double jack screws (jackbars) as indicated in specifications
  • Stainless steel main block
  • Jackscrew breaker bar and socket
  • Heavy duty storage box
  • Parts and operating manual

Features and Advantages

  • Precision alignment: the double jackbars, spread around the outside diameter of the pipe, provide concise alignment and reforming of the internal or external diameters of both pipes within 0.5mm.
  • Reformability: reforms pipes on both sides of the weld joint to schedule 40 pipe and align any wall schedule of pipe elbows, tees and other fittings.
  • Adaptable: the chain clamp can be used to align, and reform elbows, tees and other fittings at a cage clamp cannot manage. One chain clamp covers the range of eight cage clamps.
  • High rise independent jackbars: double jackscrew “high rise” jackbars have extra clearance enabling easy weld in welding torch/rod. Each jackscrew has independently positioned feet contact with the pipe surface.
  • Wide range: one chain clamp covers a wide range of pipe sizes.
  • Safe: elbows, tees, and other fittings can be held safely and securely in place during alignment with the level and support device.

Sturdi Clamp Pipe Chain Clamps Versatility

Some examples of fit-ups with the Sturdi Clamp. Each clamp is supplied with all accessories to carry out any fit-up and includes a steel storage box.

Mathey Dearman Sturdi Clamp Chain Clamp

Model No. of Jackbars Pipe Size Range Reforms/Aligns Pipe to Schedule Jackbar Model Main Block Model Chain Model
D235-SC
4
1 – 12″
40 / 80
DA-600S
DA-100
DA-300
D235S-SC
4
1 – 12″
40 / 80
DA-600S
DA-100
DA-300S
D249-SC
7
4 – 20″
40 / 80
DA-600S
DA-100
DA-300
D249S-SC
7
4 – 20″
40 / 80
DA-600S
DA-100
DA-300S