This standard specifies the type, model and basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage of diamond composite chip anchor drill bits (hereinafter referred to as drill bits) for coal mines. This standard applies to diamond composite chip anchor drill bits for coal mines.
MT/T 984-2006 Referenced Document
GB/T 1804-2000 General tolerances Tolerances for linear and angular dimensions without individual tolerance indications
GB/T 2484-1994 Symbols and designation for bonded abrasive products
GB/T 2828.1-2003 Sampling procedures for inspection by attributes--Part 1: Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection