Extension rods are manufactured from high-quality hollow drill steels. Available in two primary configurations—round and hexagonal—these rods feature a central flushing hole designed for the efficient transmission of water or air during drilling operations. The integrated threads facilitate secure connections between couplings, shanks, and drill bits.
Key Specifications:
• Thread Types: R22, R25, R28, R32, R38, T38, T45, T51, ST58, T60
• Length Options: Standard lengths ranging from 600mm to 6400mm
• Steel Grades: Male-Male Rod, MF Rod
• Rod Sizes: Hex 22mm to 35mm; Diameter 39mm to 52mm
R22 - HEX 22 (7/8" ROPE THREAD)
Rod Cross Section
Length (L)
Thread
mm
FT
Left
Right
HEX 22
610
2'
R22
R22
HEX 22
915
3'
R22
R22
HEX 22
1220
4'
R22
R22
HEX 22
1525
5'
R22
R22
HEX 22
1830
6'
R22
R22
R25 - HEX 25 (1" ROPE THREAD)
Rod Cross Section
Length (L)
Thread
mm
FT
Left
Right
HEX 25
610
2'
R25
R25
HEX 25
1220
4'
R25
R25
HEX 25
1830
6'
R25
R25
HEX 25
3050
10'
R25
R25
HEX 25
3660
12'
R25
R25
R28 - HEX 28 (1-1/8" ROPE THREAD)
Rod Cross Section
Length (L)
Thread
mm
FT
Left
Right
HEX 28
610
2'
R28
R28
HEX 28
1220
4'
R28
R28
HEX 28
1830
6'
R28
R28
Frequently Asked Questions
What are the primary applications for extension rods?
Extension rods are used in drilling operations to connect bits, couplings, and shanks. Their hollow design includes a flushing hole for transmitting water or air to clean the drill hole during operation.
What thread types are available for these rods?
We offer a wide range of thread types including R22, R25, R28, R32, R38, T38, T45, T51, ST58, and T60 to ensure compatibility with various drilling equipment.
In what shapes and sizes are the rods manufactured?
The rods are available in both Hexagonal and Round cross-sections. Hex sizes include 22mm, 25mm, 28mm, 32mm, and 35mm, while round diameters reach up to 52mm.
What material quality is used for the HEX35-DRIFTER?
These tools are manufactured using high-grade Carbon Steel and 23crni3mo D6a material, processed through forging and finished with a spray-paint surface treatment for durability.
What are the standard lengths and packaging options?
Standard lengths range from 0.4 meters to 6 meters. For shipping, they are securely packed in wooden cases or bundles to ensure safe delivery.
What is the production capacity for these drilling tools?
The production facility maintains a high capacity of approximately 500,000 pieces per month, ensuring reliable supply for large-scale projects.
KAT DRILLING
