ISO 8866 pdf download – Rotary core diamond drilling equipment – System c

ISO 8866 pdf download – Rotary core diamond drilling equipment – System c.
NOTE 1 Cutting materials other than diamond may be used.
It applies to
— single- and double-tube core barrels, including diamond core bits, reaming shells, core lifters, core-lifter cases, core tubes (outer and inner) and heads;
— drill rods and couplings;
— casing tubes and couplings.
The casing tubes are not designed for drilling, and the casing string Is only employed for casing-off the hole.
The range of equipment covers diamond core drWIng of holes from 35 mm to 112 mm in diameter (outer bit diameter) with the corresponding core diameters from 21 mm to 92 mm.
Single- and double-tube core barrels provide a means of coring compact rocks (types M and DM core barrels), fissured and fractured rocks (types T and DT core barrels) and fractured and broken-down rocks (type DP core barrels).
2 DesIgnation
The designation of items complying with this International Standard comprises
— the name of the Item;
— the letter(s) Identifying the core barrel type (not applicable to drill rods and coupling, casing tubes and casing couplings).