BS 4019-1:1974

Gives nomenclature and leading dimensions for interchangeability of equipment for drilling holes 30 mm to 200 mm diameter, yielding cores of 17 mm to 165 mm diameter. Relates to parallel wall drill rods and couplings; casing, casing couplings, casing bits, casing shoes, drive shoes and casing reaming shells; core barrels, core bits, core lifters and reaming shells. Specifies mechanical properties for rods, casing and inner and outer tubes, casing couplings, and rod couplings and adaptors.