T38 Blast Hole Threaded Drill Rod, Extension Rod with Coupling
Sleeves and shank adapter
JCDRILL’ drifting and extension drill rods are for in drifting,
tunneling, long-hole drilling, bench and production drilling
industries. These rods are produced with round or hexagonal
sections in all common thread designs, and in Male/Male (M/M) or
Male/Female (M/F) connections. All our drifting and extension drill
rods are heat-treated with carburization or high frequency,
combinated with phosphorization
T38 Blast Hole Bench Drilling Extension rods are made by hollow
drill steels; there are two shapes of extension rods, round type
and hexagonal type. 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.
Usually for extension rods, there are R22, R25, R28, R32,R3212,
R38, T38, T45, T51, ST58, T60 threads, and different lengths of
rods are available from 600mm to 6400mm usually.
1. High precision in size and shape
2. Good low temperature toughness
3. Excellent comprehensive mechanical properties
4. High connection strength and sealability
5. Large inside diameter of tool joint
6. High torque resistance
7. High fatigue strength and long fatigue life
Hexagonal cross sections 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.
With the longer steel tending to be larger in diameter,
conventional extension steel is characterized by a duplicate thread
on each end of the steel.,
Material: Tungsten carbide and high strength alloy steel
Processing: CNC milling and proprietary heat treatment process
High strength chromium-molybdenum steel with high fatigue strength
and excellent wear resistance
Type: Hex. Drifter Rod, Extension Rod, Speed Rod, MF-Rod
Color: Based on Customer requirements
Material: Tungsten carbide and high strength alloy steel
Processing: CNC milling and proprietary heat treatment process
T38 Thread rock drill rod
In our after sales service system, We establish perfect control
system strictly according to ISO-9000 series, in this system,
technology date and problem solve solution and preventive measures
will be provided in any maintain project, all the spare parts will
be used in new OEM products with installation instructions, packing
list, manufacturer's instruction, qualification and Warranty
certificate.
We provide "one equipment & one case, endless service, namely the
after sales service begin from the order confirmation, last for the
working life of the equipment.
