Offset Header Stub Tube Machining

2 Pages

Offset Header Stub T ube Machining The challenge with machining the 590 header tubes is that 360 of the header tubes required the bevels to be on a 20 degree angle and 3/16th oset from the center line of the through-hole in the header. The 360 oset tubes required us to bore out the existing tube perpendicular to the bore of the pipe with one operation and then utilize our stub tube machine to complete the process with the oset weld prep. A

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