Centre drills for centre holes with protecting chamfer. Type B Ingestion-build-67170 This helps in standardizing the

This helps in standardizing the manufacturing process that results in producing good quality pressure-sensitive adhesive paper masking tapes used in aerospace applications

and the maximum working temperature is not higher than 300 oC for steel and 100 oC for aluminium or aluminium alloy vessels

cerealbased products

method of operation

Centre drills for centre holes with protecting chamfer. Type B Ingestion-build-67170 This helps in standardizing the1 Scope This International Standard specifies the dimensions of centre drills for centre holes with protecting chamfer Type B. It covers only metric dimensions, regarded as the only recommended dimensions in the future for this type of drills. The flutes can be straight or spiral at the option of manufacturer. Unless otherwise stated, these drills are right hand cutting. Annex A gives the recommended dimensions for the centre holes, Type B, which can