Double Jackscrew Chain Clamp: Pipe Welding Clamp
Mathey Dearman invented the first chain clamp for welding pipe in
1930, and the Double Jackscrew chain clamp was launched in 1931.
The Double Jackscrew chain clamp reforms schedule 40 pipe on either
side of the joint to be welded, and it is also able to exert pressure on
the high points of both sides to eliminate “Hi-Low”. The chain clamp’s
level and support device allows the pipe, elbow, tee, flange and other
fittings to be held securely in place during pipe alignment and welding.
Level and support device not included, must be purchased separately.
Pipe with wall thicknesses up to schedule 80 can be aligned with the Double Jackscrew chain clamp.
Although all Mathey Dearman pipe welding chain clamps feature
stainless steel jackscrews, jackbars and main blocks, stainless steel
chain should be used on stainless steel or specialty alloy applications
to avoid potential contamination.
|
Model
|
Number of
Jackbars
|
Pipe Size Range
|
Reforms Pipe to
Schedule
|
Aligns Pipe to
Schedule
|
Est.
Ship
Weight
|
|
D249
|
7
|
4-20 / 102-508
|
40
|
80
|
72 / 33
|
