1.1 This standard covers the requirements of pattern equipments for foundry. It specifies mould tapers, contraction allowances, machining allowances, pattern manufacturing tolerances and other technical aspects of pattern making and usages.
1.2 This standard does not cover pattern accessories, like guide pins, closing pins, vent, wires, which are covered by separate Indian Standards
[ see IS : 4981-1984*, IS : 4982-1984〓, IS : 6447-1986〓] and guide bushes ( under preparation), etc.
IS 12006-1987 history
1988IS 12006-1987 Specification for equipment for metal molds and epoxy resin molds used in foundries