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Sai Deepa Rock Drills (pvt) ltd over the years developed Extension equipment of different sizes SDRD offers a variety of tools which are used in the surface mining .The items offered by SDRD includes shank adapters, coupling sleeve, extension rod &threaded cross bit or button bit. Our extension drilling system offers several rod, coupling &shank adapter designs and specifications as required by drilling industry.

EXTENSION RODS

S.NO
Type of Threading
Length
(In mm)

models
design
1
R22 7/8”
800-3200 mm
Male/male
hexagonal
2
R32 1¼”
900-3660 mm
Male/male
Round
3
R38 1/2”
1220-3660 mm
Male/male
Round



COUPLING SLEEVES


EXTENSION RODS


SHANK ADAPTERS