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Manufactured under ISO 9001 certified processes with SGS-audited production controls, Kaituo multi-size drill rods deliver consistent power transmission for pneumatic rock drilling equipment across mining, tunneling, and construction operations. Each rod is forged from high-carbon alloy steel with uniform carburization treatment, ensuring dimensional accuracy and structural integrity for repeated impact loading. The product line supports multiple length configurations to match varying borehole depth requirements, reducing replacement frequency and operational downtime for industrial users.
Parameter | Specification |
|---|---|
Shank Type | Hexagonal H22 × 108mm |
Taper Degree | 7° |
Available Lengths | 600mm, 800mm, 1200mm, 1600mm, 2000mm, 2400mm |
Material | 55SiMnMo hollow drill steel |
Shank Hardness | HRC 52-58 |
Body Hardness | HRC 38-45 |
Collar Diameter | 37mm |
Inner Hole Diameter | 9mm |
Compatible Bit Shank | 22mm taper |
Certification | ISO 9001, SGS Production Audit |
Surface Treatment | Shot blasting + anti-rust oil coating |
Each drill rod begins with certified 55SiMnMo hollow steel bar stock, selected for its impact toughness and fatigue resistance under continuous percussive loads. The forging process utilizes precision die forging equipment to form the shank end and integral collar, maintaining consistent grain structure throughout the rod body. Carburization heat treatment is applied to the shank striking surface to a depth of 1.5-2.0mm, creating a wear-resistant surface while preserving a tough core to prevent shattering during operation.
Every production lot undergoes three quality inspection checkpoints: dimensional verification after forging, hardness testing post-heat treatment, and ultrasonic flaw detection to identify internal defects before packaging. The threaded connection end maintains concentricity within 0.5mm, ensuring proper seating in the rock drill chuck and efficient energy transfer from piston to bit.
Compatible Rock Drill Model | Application Type |
|---|---|
YT27 Air Leg Rock Drill | Underground mining, tunneling |
YT28 Air-leg Rock Drill | Hard rock drilling, shaft sinking |
YT29A Air-leg Rock Drill | High-power rock excavation |
TY24c Pneumatic Hand Held Rock Drill | Quarrying, construction site work |
YT24 Rock Drill | General construction, small-scale mining |
YO18 Handheld Rock Drill | Secondary breaking, light demolition |
Proper matching between drill rod length and rock drill power output is recommended to maximize drilling efficiency. Shorter rods (600-1200mm) work well for handheld operations in confined spaces, while longer configurations (1600-2400mm) suit air-leg setups for deeper boreholes in production mining.
Kaituo drill rods support multiple commercial drilling scenarios across different sectors. In underground mining operations, the rods facilitate blast hole drilling in medium to hard rock formations, with the carburized shank withstanding over 8,000 impacts per minute from the rock drill piston. For tunneling and infrastructure projects, the multi-size options allow drilling teams to progress from initial collaring to final depth without switching equipment types.
Quarry operations utilize these rods for dimension stone extraction and aggregate production, where consistent hole alignment reduces explosive waste and improves fragmentation. Road construction and foundation drilling teams deploy the rods for rock excavation in highway cuts and building site preparation, where equipment uptime directly impacts project schedules. The hollow center design enables efficient air flushing of cuttings during drilling, reducing bit regrinding requirements and maintaining penetration rates.
Procurement Parameter | Details |
|---|---|
Minimum Order Quantity | 50 pieces for standard sizes |
Standard Lead Time | 15 days for in-stock items, 30 days for production orders |
Payment Terms | 30% T/T deposit, 70% balance prior to shipment |
Warranty Period | 6 months from date of delivery |
Packaging | Wooden crates with anti-rust protection, export standard |
Shipping Options | Sea freight (80% of orders), road/rail for landlocked countries, air freight for urgent parts |
Spare Parts Availability | Full inventory of replacement bits and couplings |
Technical support is available throughout the procurement process, including parameter matching for specific rock conditions and equipment compatibility verification. Factory acceptance testing can be arranged for bulk orders, with material test reports provided upon request.
Service life varies based on rock hardness, operating air pressure, and operator technique. In medium-hard granite (f=8-12), properly maintained rods typically deliver 80-120 meters of total drilling before replacement. Abrasive rock conditions or excessive feed pressure will reduce service life.
The H22 shank configuration is designed primarily for pneumatic rock drills in the 20-30kg weight class. Hydraulic drills with higher impact energy may require H25 or T-thread rods for optimal performance. Contact our technical team for specific hydraulic model compatibility.
These rods accept standard 7° taper button bits and cross bits with 22mm taper shanks. Common bit diameters range from 32mm to 42mm, with various carbide tip configurations available for different rock types.
Custom lengths from 400mm to 3000mm can be produced for specific project requirements. Minimum order quantities apply for non-standard configurations, with engineering drawings provided for customer confirmation before production.
Rods are delivered with anti-rust oil coating. For long-term storage, keep rods in dry indoor conditions, reapply anti-rust oil every 3 months, and avoid contact with corrosive materials. Do not store rods directly on concrete floors.
