Description NEW DIAMOND Symmetric overburden casing drilling system Symmetric is a system comprised of an ingeniously simple concentric method of drilling through overburden with casing. Symmetric can drill ... Read More
Description The pilot bit is attached to any common DTH hammer shank or top hammer rod thread. The casing shoe is welded to the casing. The pilot bit and ring bit are locked together by the bayonet coupling. ... Read More
DescriptionNEW DIAMOND Symmetric overburden casing drilling system Symmetric is a system comprised of an ingeniously simple concentric method of drilling through overburden with casing. Symmetric can drill ... Read More
Concentric Overburden Casing Drilling System Ring Bit Description NEW DIAMOND Symmetric overburden casing drilling system Symmetric is a system comprised of an ingeniously simple concentric method of drilling ... Read More
ApplicationsWidely used in mines, quarries, earthworks and other engineering drilling blasting hole, guardrail hole, mountain reinforcement, anchorage and other engineering holes,geothermal exploration hole, ... Read More
Description NEW DIAMOND Symmetric overburden casing drilling system Symmetric is a system comprised of an ingeniously simple concentric method of drilling through overburden with casing. Symmetric can drill ... Read More
Description The below size of Symmetric systems which are available, and the special design is upon customer’s requirement: Symmetric 114, Symmetric 127, Symmetric 140, Symmetric 146, Symmetric 168, Symmetric ... Read More
Description NEW DIAMOND Symmetric overburden casing drilling system Symmetric is a system comprised of an ingeniously simple concentric method of drilling through overburden with casing. Symmetric can drill ... Read More
Description NEW DIAMOND Symmetric overburden casing drilling system Symmetric is a system comprised of an ingeniously simple concentric method of drilling through overburden with casing. Symmetric can drill ... Read More
Description NEW DIAMOND Eccentric overburden casing drilling system: Eccentric casing drilling bit is the most economical solutions because its ingenious reaming wing the bit is retrievable can be used at the ... Read More