This part of ISO 3552 establishes the nomenclature and lays
down the leading dimensions to ensure interchangeability
within the limits of System B of the following equipment:
a) drill rods and couplings, fishing rods and couplings;
b) casing tubes, casing drive shoes, casing shoe bits,
casing bits and Sediment tubes;
c) core barrels, core bits, core lifters and reaming shells.