RichardAllen Posted November 22, 2008 Share Posted November 22, 2008 I need to weld a 54mm thin wall mild steel branch pipe (pipe A) onto another 56mm thin wall mild steel straight-through pipe (pipe B), at about 30 degrees to make a Y shaped pipe joint. The joint needs to be a watertight when finished. How do I best shape the end of the branch pipe A and cut the corresponding hole in straight-through pipe B, to get a good fit so that it is nice and neat when welded up ? Regards Richard Quote Link to comment Share on other sites More sharing options...
Warthog Posted November 22, 2008 Share Posted November 22, 2008 Heres a coping calculator and template site: http://www.metalgeek.com/static/cope.pcgi Hope this helps, have used it several times and makes life easier Mark Quote Link to comment Share on other sites More sharing options...
landmannnn Posted November 22, 2008 Share Posted November 22, 2008 My method for a similar thing was to make the joint out of plastic waste pipe a bit smaller than the ID of the metal tube. (a bit bigger so the plastic fits over the steel would have been easier) With plastic tube a bit of trial and error and it is easy to make the right shape. Using the plastic as a template I marked the steel and cut to shape using an angle grinder. Quote Link to comment Share on other sites More sharing options...
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