Can 316L steel pipes be welded directly to the wall of a water tank?
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We manufacture anaerobic reactors, which are tanks with a water depth of 24 meters. Can the inlet pipe at the bottom be welded directly to the Q235B tank wall when it can pass through the wall of the tank? Will the strength be affected when using stainless steel welding rods?
No, there’s too much material in the middle!
Yes, E309Mo-16 or E309MoL-16 welding rods can be used.
A welding procedure qualification must be carried out before welding.
It’s no big problem; we’ve done this often before.
First, whether this “tank” is considered a pressure vessel. The diameter of the take over, the thickness of the tank body, and whether reinforcement plates are needed. If it is not a pressure vessel and the pipe diameter is not very large, considering the use of a short pipe with flanges is an option. If the wall thickness of the tank is sufficient, it is not necessary to add reinforcing plates. It’s better to send a video, or find someone who understands the matter to take care of it. What I can offer here are just suggestions for reference only.
I’m not an expert in welding, but there should be a welding process that can be used to join them. You can consult a welding engineer about this. However, aside from welding, it’s also necessary to consider the strength of the equipment at the areas where holes are made. Depending on the pressure at the areas where openings are present in the equipment, as well as the differences in the equipment’s outer diameter and the size of those openings, it is necessary to re-evaluate the strength of those specific parts of the equipment. If the strength does not meet the required standards, reinforcement is needed for those areas.
Seeing these comments, you guys are really experts – dealing with both process evaluation and pressure vessels. To be precise, A302 (309-16) stainless steel refers to welding electrodes that combine 304 stainless steel with carbon steel
As you said, it’s not possible. I’m sorry – those few words relate to the design of process equipment