I have a question regarding welding issues with welded parts
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In welded joints, the size of the weld depends on the thickness of the plate. How is that determined? Is there any pattern?
Please refer to GB985--88
For butt and fillet combination welds that require full penetration, such as T-joints, cross joints, and intersecting joints, the size of the weld corner should not be less than t/4； For crane girders or similar members with fatigue verification requirements, the weld leg size of the web and upper flange plates is t/2, and shall not exceed 10 mm. The allowable deviation for the weld leg size is 0–4 mm. (t: plate thickness)
There is already a 2008 version of the standard; search for it and read it carefully – you will gain something from it!
Refer to the relevant standards; there are relevant standards for the boiler industry, the tank industry, and the switch industry
For the base, automatic welding can be used for thicknesses of 8 mm or less; an X-shaped groove is recommended for thicknesses over 22 mm.
Relevant standards can be consulted, which contain relevant provisions