What is the percentage of weld materials in pressure vessels relative to the total weight of the equipment?
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Has anyone calculated what percentage of the total weight of a pressure vessel the welding materials account for?
There is no pattern to this. Those with many welds account for a larger proportion, while those with few welds account for a smaller proportion.
As a general guideline for estimating the amount of welding rod required in a container, it is around 3% of the equipment’s net weight.
How do you calculate it when the volume and thickness are different?
Simple horizontal or vertical containers with few internal components; a welding rod consumption rate of around 2% is sufficient. Tower-type vessels, especially tray towers, involve a large amount of welding, with the electrode consumption rate needing to be between 3% and 4%. For spherical tank-type containers, the calculation can be done directly by calculating the weld length per meter.
It is best to calculate the total length of the welds first; the amount of welding material required is not closely related to the size of the container.