📋 Basic Information
Certification
ISO 9001:2000, ISO 9001:2008
Surface Treatment
Spray-Paint
Manufacturing Process
Forging
Machine Type
Drilling Tools
Material Quality
23crni3mo D6a
Production Capacity
500,000 PCS/Month
Color
Red, Black, Yellow, White
📦 Packaging & Delivery
Package Size
30.00cm * 30.00cm * 30.00cm
Transport Package
Wooden Case
📍 Product Description
Extension rods are made by hollow drill steels. They come in two primary shapes: round and hexagonal. These rods feature a flushing hole used for transmitting water or air during drilling operations. The threads facilitate connections between couplings, shanks, or bits.
Key Specifications:
- Thread Types: R22, R25, R28, R32, R38, T38, T45, T51, ST58, T60
- Rod Sizes: Hex. 22mm, Hex. 25mm, Hex. 28mm, Hex. 32mm, Hex. 35mm, Dia. 39mm, Dia. 46mm, Dia. 52mm
- Available Lengths: 0.4m to 6m (600mm to 6400mm)
- Steel Grades: Male-Male Rod, MF Rod
- Productivity: 20,000 MT per month
📊 Technical Data - Hex Extension Rod
| R22 - HEX 22 (7/8") Rope Thread |
| Rod Cross Section |
Length (mm) |
Length (ft) |
Thread Left |
Thread 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 (mm) |
Length (ft) |
Thread Left |
Thread Right |
| HEX 25 | 610 | 2' | R25 | R25 |
| HEX 25 | 1000 | 3' 3" | R25 | R25 |
| HEX 25 | 1525 | 5' | R25 | R25 |
| HEX 25 | 3050 | 10' | R25 | R25 |
| HEX 25 | 4305 | 14' 1-1/2" | R25 | R25 |
| R28 - HEX 28 (1-1/8") Rope Thread |
| Rod Cross Section |
Length (mm) |
Length (ft) |
Thread Left |
Thread Right |
| HEX 28 | 610 | 2' | R28 | R28 |
| HEX 28 | 915 | 3' | R28 | R28 |
| HEX 28 | 1220 | 4' | R28 | R28 |
| HEX 28 | 1830 | 6' | R28 | R28 |
| HEX 28 | 3050 | 10' | R28 | R28 |
| HEX 28 | 3660 | 12' | R28 | R28 |
❓ Frequently Asked Questions
What materials are used for these extension rods?
The extension rods are manufactured using high-quality Carbon Steel and 23crni3mo D6a steel grades to ensure durability and performance in drilling environments.
What is the purpose of the hole in the center of the rod?
The hollow hole, also known as a flushing hole, is specifically designed for transmitting water or air during the drilling process to clear debris and cool the drill bit.
Which thread types are available?
We offer a wide range of industry-standard threads including R22, R25, R28, R32, R38, T38, T45, T51, ST58, and T60.
What rod shapes can I choose from?
We provide extension rods in two primary shapes: hexagonal (HEX) and round, depending on your specific drilling equipment and requirements.
How are the products packaged for international shipping?
To ensure safe delivery, extension rods are typically packed in sturdy wooden cases or bundles, designed to withstand long-distance transport.
What are the available lengths for the extension rods?
Rods are available in various lengths ranging from 0.4 meters (400mm) up to 6 meters (6000mm), with specific sizes available for HEX 22, 25, and 28 models.
KAT DRILLING
