welding weldolets
welding weldolets
(OP)
How full do weldolets need to be welded. Do they need to be flush with the outside of the olet or not? Is there anything in any of the codes that speaks of this?
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RE: welding weldolets
Weldolet is a trade name. The generic term is integrally reinforced branch fitting. A sketch is provided indicating the weld is a complete joint penetration groove weld with a reinforcing fillet weld.
You should also read the literature available from the manufacturer. They usually have illustrations available on their websites depicting the extent of the weld required for them to function properly.
Note one thing, the extent of welding is not a function of the design pressure. That is, whether the system operates at low pressure of high pressure, the same amount of weld is required.
Best regards - Al
RE: welding weldolets
The branch connections in B31.3 are more like pipe stub-ins. Would the amount of weld required for these be different than manufactured olets? As well, the manufacturers name on the olet can't be made out. Any thoughts?
Thanks
RE: welding weldolets
For nozzles that are manufactured from pipe, the designer needs to perform an area reinforcement calculation to adequately size the wall thickness to provide for reinforcement for the nozzle and main pipe run.
RE: welding weldolets
Each manufacturer has developed and tested their integrally reinforced branch fittings. The details vary from one manufacturer to another and each has specific welding requirements. For the most part, the fittings are to be complete joint penetration groove welds. If the fitting has multiple groove angles, the fitting is to be welded to the edge of the first groove. A reinforcing fillet is typically deposited over the CJP groove weld. Once again, a word of caution, go to the manufacturer's website to find out what the specific requirements are for the brand being installed.
If you can not read the name of the manufacturer or the size of the fitting, it is time to go to another brand. That is important information. The fitting should not be used if it cannot be properly identified.
Best regards - Al
RE: welding weldolets