Material
Coil in by heat, lot out by heat
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1
Coils are received with grade, diameter, heat number and certificate. Incoming inspection accepts the coil before it is issued.
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2
A work order reserves coils of the right grade and diameter. The lot off the header inherits the heat number.
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3
Wire issued, pieces produced and scrap are reconciled per lot. Material yield per part is a fact, not an estimate.
Heat number carried from coil to carton