T38
T45
T51mining
Rock
Drilling
Tools
Extension
RodsThread
Drill
Rod
Product
features:
Extension
rods
are
made
by
hollow
drill
steels.
This
hollow
hole
are
usually
named
flushing
hole,
used
for
transmitting
water
or
air
during
drilling.
And
the
threads
can
be
used
for
connecting
couplings,
shanks,
couplings
or
bits.
Body
Type:
There
are
two
shapes
of
extension
rods,
round
type
and
hexagonal
type.
Hexagon
rods
are
more
rigid,
heavier
and
transfer
energy
more
efficiently,
while
increasing
flushing.
Round
rods
are
generally
lighter
than
hexagonal
rods
and
are
normally
used
in
extension
drilling
applications.
Thread
Type:
Usually
for
extension
rods,
there
are
R22,
R25,
R28,
R32,
R38,
T38,
T45,
T51,
ST58,
T60
threads,and
different
lengths
of
rods
are
available
from
600mm
to
6400mm
usually.
Company
profile:
Hebei
Minetech
Machinery
Technology
Co,
Ltd
is
an
joint
venture
enterprise
withEur
ope
Partner,
which
is
located
in
Shijiazhuang
City
,
Hebei
Province,China.Our
company
is
specialized
in
manufacturing
and
exporting
of
coal
miningmachinery
,such
as
hydraulic
and
pneumatic
drill
machine,roof
bolter
and
drillingconsumption
,like
drill
bit
and
drill
rod
with
own
factory
in
Shijiazhuang
City.With
our
rich
expenience
for
over
a
decade
and
with
professional
engineers
andsales
team,
we
focus
on
providing
complete
solutions
for
mining
machinery.Target
markets
is
gradually
shifted
from
dome
stic
market
to
intemational
market,products
are
exported
tomore
than
thirtycountries
and
regions,
includingSoutheast
Asia,
the
United
States,
Germany,
Britain,
South
AfricaPoland,Russia,
Middle
Asia
and
so
on
,
and
established
a
good
brand
and
reputation
inintemational
market.
