Drift Pins

Drift pin is a tool used for localizing a hammer blow.

1.
Best quality fules.

Always double check that the Flange Catchers fit perfectly into the stud bolt holes on the Flange itself. The Flange Catcher ‘Home Plate’ needs to be of sufficient length to catch or receive the spool flange, which will on most occasions be a swivel flange. As a rough guide about 5 times the width of the Weld Neck Flange thickness.

2.
Easy to bring everything close.

As a rule of thumb the length of the Flange Catchers should also be 2.5 times the pipeline diameter size. That is for a 16” pipeline the Flange Catchers need to be 40 inches in length, total. However, as long as it is not too short to receive the spool flange, that should be ok.

The two ‘nutted’ drift pins on the left have had ½ nuts welded to the end.

Three reasons for this: 

  1. These are to be used with the ‘Drift Pin Jacking Tool’ (5.04 Drift Pin (Hydraulic) Jacking Tool)
  2. Divers can use an impact wrench to help ‘drift’ the pin into the flange hole. 
  3. If they become stuck, Divers can use a come-a-long can be used to help dislodge the pin from the hole. 
  4. Always double-check that the Drift Pins are suitable for the job. That means that they are not machined from stainless steel, that they are of the correct length & that they are of the correct diameter for the flange hole. 
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