Welding Pipes to Flanges
Welding Pipes to Flanges
(OP)
What considerations do I need to make to ensure I have qualification to weld a 88.9mm OD (7.8mm wall) pipe to a 14mm thick slip-on flange? We work to BS 15614-1, however if you are able to provide details on how this is covered by ASME this should still answer my query.
At the moment we have a butt weld pipe code (which also covers fillets) that covers us up to 7.8mm thick for pipe thickness and 25mm+ for pipe OD. We also have a fillet weld code (welded using a T-Joint) which covers a plate thickness of 5mm+. If I combine the 2 does that give us the range we need? Comments I received from the inspector at our client say not, and he seems to think that a branch weld code is needed?!?!?! (although BS 15614-1 clearly states that pipe butt weld coding covers branch welds also)
Any help would be greatly appreciated.
At the moment we have a butt weld pipe code (which also covers fillets) that covers us up to 7.8mm thick for pipe thickness and 25mm+ for pipe OD. We also have a fillet weld code (welded using a T-Joint) which covers a plate thickness of 5mm+. If I combine the 2 does that give us the range we need? Comments I received from the inspector at our client say not, and he seems to think that a branch weld code is needed?!?!?! (although BS 15614-1 clearly states that pipe butt weld coding covers branch welds also)
Any help would be greatly appreciated.





RE: Welding Pipes to Flanges
RE: Welding Pipes to Flanges
Have you ever had any dealings with BS 15614-1 also? According to this standard there are 4 different set-ups for qualifying a weld:
1. Butt Joint in Plate
2. Butt Joint in Pipe
3. T-Joint in Plate (Fillet)
4. Branch Connection in Pipe
Taking this into account it makes sense what I said earlier (I hope) as we have a code for fillet welding both plates (3) and pipes (1 - as butt welding also codes for fillets). I have gone back to our client and questioned what they are saying so will see what they say.
If anybody else is familiar with BS 15614-1 I would appreciate your input.
RE: Welding Pipes to Flanges