🟦 BASIC INFORMATION
Certification
ISO 9001:2000, ISO 9001:2008
Surface Treatment
Spray-Paint
Manufacturing Process
Forging
Thread
R38/R28 T38/R28 R38/R32 T38/R32
Machine Type
Drilling Tools
Color
Red, Black, Yellow, White
Material Quality
23crni3mo D6a
Specification
Extension Rods/Speed rods
📦 PACKAGING & DELIVERY
Package Size
30.00cm * 30.00cm * 30.00cm
Transport Package
Wooden Case
📝 PRODUCT DESCRIPTION
Extension rods are made by hollow drill steels; there are two shapes of extension rods, round type and hexagonal type. This hollow hole is usually named flushing hole, used for transmitting water or air during drilling. The threads can be used for connecting couplings, shanks, or bits.
Common thread types for extension rods include R22, R25, R28, R32, R38, T38, T45, T51, ST58, and T60. Standard lengths are available ranging from 600mm to 6400mm.
Technical Features:
• Steel Grade: Male-Male Rod, MF Rod
• Rod Sizes: Hex 22mm, Hex 25mm, Hex 28mm, Hex 32mm, Hex 35mm, Dia 39mm, Dia 46mm, Dia 52mm
• Available Lengths: 0.4m - 6m
• Packaging: Wooden case or in bundles
📊 HEX EXTENSION ROD SPECIFICATIONS
| R22 - 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 - R25 - HEX 25 (1" ROPE THREAD) |
| ROD CROSS SECTION |
LENGTH (L) |
THREAD |
| mm |
FT |
Left |
Right |
| HEX 25 | 610 | 2' | R25 | R25 |
| HEX 25 | 1000 | 3' 3" | R25 | R25 |
| HEX 25 | 1525 | 5' | R25 | R25 |
| HEX 25 | 1830 | 6' | R25 | R25 |
| HEX 25 | 3050 | 10' | R25 | R25 |
| HEX 25 | 4305 | 14' 1-1/2" | R25 | R25 |
| R28 - 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 |
| HEX 28 | 2435 | 8' | R28 | R28 |
| HEX 28 | 3660 | 12' | R28 | R28 |
❓ FREQUENTLY ASKED QUESTIONS
What materials are used for these extension rods?
The extension rods are manufactured from high-quality carbon steel and hollow drill steels (such as 23crni3mo D6a) to ensure durability and performance in demanding drilling environments.
What is the purpose of the hollow hole in the rod?
The hollow hole, also known as a flushing hole, is designed to transmit water or air during the drilling process to cool the bit and remove debris.
Which thread types are available for order?
We provide a wide range of thread types including R22, R25, R28, R32, R38, T38, T45, T51, ST58, and T60 to fit various drilling equipment.
Are there different shapes of extension rods?
Yes, extension rods are available in both round and hexagonal cross-sections to meet different operational requirements.
What are the standard lengths available for these rods?
Standard lengths typically range from 0.4 meters (600mm) up to 6 meters (6400mm), depending on the specific model and thread type.
KAT DRILLING
