Traditional Culture Encyclopedia - Photography major - How big can the welding flatness of the big frame be?

How big can the welding flatness of the big frame be?

1. general welding: in general, the flatness of large frame welding is required to be 3 mm ..

2. High-precision welding: In some applications that require high precision, such as aerospace, rail transit and other fields, the requirement for welding flatness of large frames may be higher, generally below1mm.

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