When welding the container flange to the cylinder, the weld size is determined!
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In a free-style flange, how is the weld width L determined when welding the container flange to the cylinder? And the weld leg height? In the welding joint structure specified in GB150, it refers to connections between pipes, without any details regarding flange or cylinder weld dimensions.
Meet the requirements of 150 and flange standards.
This post was last edited by li*aoli Li on 2017-3-27 11:44. Have the same question? I’ve seen the standards for type A flat welding flanges; I hope everyone can help discuss whether it’s feasible
The size L does not need to be specified; it is determined by the groove depth and the height of the fillet weld. In fact, the L value cannot be measured even after welding. Since the root height of the fillet weld has been specified as “≥δn and not less than 6 mm”, there is no need to specify the leg height anymore.
The equipment flange and the cylinder weld are clearly specified in the flange standards
The height of the fillet weld should be “≥δn, and not less than 6 mm” – based on the flange design shown by the poster, assuming a flange thickness of 34 mm and δn = 16, it’s difficult to achieve this in the drawings; the groove required is quite large. If L is 32 mm, it seems more reasonable
Just use the welds specified in the standards; if you really need to perform calculations, you can follow the methods outlined in ASME Section VIII-1. The methods specified in our GB/T150 are basically similar to those in ASME VIII-1; the only difference is that our GB/T150 does not require calculations regarding the dimensions of welding grooves. In fact, these strength factors have already been taken into account when formulating this standard, so it can be used with confidence. To date, no accidents have been reported as a result of the use of the welding methods specified in GB/T150.