Set 2 Practice Mode

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Q10731
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What is called, if a sheet metal edge is folded to 180 Degree twice?
Q10732
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How many types of wiring process followed in sheet metal work?
Q10733
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How many methods of edges stiffening done?
Q10734
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What is used for the welded frames for stiffening and supporting rectangular ducts?
Q10735
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What is the allowance for double grooved seam / joint?