Metro driltech offers a complete line of "BULLDOG" Down Hole
Hammers ranging in hole sizes of 89 mm (3-1/2") through to 1200 mm (47-1/2")
by using the right combination of machining excellence, and the highest
quality raw materials. The bulldog hammer can virtually guarantee longer
service life. Bulldog has proven superior performance in availability,
quality and reliability. When you combine this king of excellence with Metro
Driltech Bulldog hammer bits you have a winning combination!
Bulldog DTH Button Bits
Metro driltech manufactures each bit using the highest quality
raw materials available in the industry today. Each individual bit is tested
before it leaves our manufacturing facility to assure every machined
dimension is accordance with its design. All heat treating testing for
hardness is thoroughly scrutinized to assure our customers of quality
products for their drilling operations.
Missile Hammers & Bits
The Metro Driltech "Missile" DTH hammers incorporate the latest,
unique works by valveless pneumatic pessure. This new technology strongly
increases airflow efficiency within the Missile hammer and ensures that the
high pressure air paths are optimized to deliver the greatest amount of
energy to the piston.
Hole Openers
Metro Driltech Hole Openers provide hole enlargement for hammer
drilling. Custom pilot and head diameters are available in most all shank
designs like Ingersoll-Rand, Altas Copco, Sandvik, Numa and Bulroc, etc. The
pilot hole was drilled followed by the first stage to enlarge the hole. The
second and final stage then further enlarged the hole. Different stages can
be built per drillers specifications to maximize cutting removal and rig
capabilities. Metro Driltech offers a full line of standard and custom Hole
Openers in all sizes from 152 mm (6") through 850 mm (33-1/2") in diameter
for all industry hammer shanks. Wear pads, back reamer carbide buttons, and
or carbide buttons on the pilot can be added for an additional fee. All Hole
Openers are manufactured from the highest quality aircraft alloy steel. We
at Metro Driltech are proud of the quality and workmanship of our custom
built Hole Openers.
"MARATHON" Cluster Drill
The CD hammer is used when the drillers use it at downtown
construction site to avoid from civil complaint about noise and vibration.
Metro Driltech offers a hard rock drilling system capable of drilling hole
size ranging from 381 mm (15") through to 2000 mm (78-7/8") in diameter by
combining multiple down-hole drills into a single canister. These dills are
custom engineered and manufactured to meet each customer's unique hole size
requirements. The drills are short, light weight and compact, featuring
exclusive technology for quick-release bits and low noise and vibration when
drillers use them at downtown job sites. Metro Driltech Cluster Drill is
designed for largest building, roadway and mining contractors to quickly
drill holes to the exact size required by their specifications.
"MD Jaws" Concentric Overburden System
Metro Driltech "MD Jaws" concentric overburden system is an
integral part of an under reaming (overburden) system used in applications
where the drilled hole may collapse when drilling with conventional methods.
"MD Jaws" Bits allow for the advancement of a casing system through
unconsolidated formations, using an air DTH hammer, and the effortless
withdrawal of the bit after the casing has been set. Applications are
typically variable formations with soft layers overlying or intersoersed
with hard materials such as boulders or cobbles. "MD Jaws" is designed to
drill in all such formations by carrying the casing through the variable
layes to target depth, after which the complete tool is retracted, leaving
the casing in the hole permanently, or until the next operation is carried
out.