Workshop Technology
The blank diameter used in thread rolling will be

A little larger than the pitch diameter of the thread
Equal to pitch diameter of the thread
Equal to minor diameter of the thread
A little larger than the minor diameter of the thread

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Workshop Technology
Spot welding is used for welding

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

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