Workshop Technology
In order to get uniform thickness of the plate by rolling process, one provides

Offset on the rolls
Hardening of the rolls
Antifriction bearings
Camber on the rolls

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Workshop Technology
Spot welding is used for welding

Butt joints in plates having 0.025 mm to 1.25 mm thickness
Butt joints in plates having thickness above 3 mm
Lap joints in plates having thickness above 3 mm
Lap joints in plates having 0.025 mm to 1.25 mm thickness

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