The Top hammer drill rod produced by YS STEEL is made from special alloy steel billets selected for mining applications. The raw materials are screened and selected at the factory level from the beginning, avoiding any inherent defects in the steel.
The raw material bars are pre-inspected for defects such as inclusions and gas pores; directional forging optimizes the metal flow lines, forming along the force direction, enhancing the impact resistance of the drill rod and reducing the risk of fracture.
The body and the threaded joint are treated separately for heat treatment, with the body maintaining high toughness to resist bending and the threaded part being locally strengthened to resist tooth breakage and impact, balancing the overall toughness and the wear resistance of the joint.
The threads undergo multiple processes such as rough machining, fine machining, and fine finishing, with strict control of dimensions and surface roughness to reduce assembly wear and slippage faults, and lower the failure rate of slip locking.
Two independent magnetic particle flaw detection tests are conducted after heat treatment and before the finished product is shipped out, separately checking the forging area and the stressed parts of the threads, detecting micro-cracks, and reducing the probability of missed detections.
According to actual working conditions such as dampness underground and high dust in quarry sites, matching anti-rust and wear-resistant surface treatments are provided. Customized protection plans can be customized for non-standard projects.
| Item | Specification |
| Application Type | Top‑Hammer Rock Drilling |
| Material | High‑Toughness Alloy Steel for Rock Drilling |
| Common Thread Types | R32, R38, T38, T45, T51 |
| Common Length | 1.2m‑6.1m, custom length available |
| Rod Diameter | 32mm‑51mm |
| Heat Treatment | Integral Quenching & Tempering, thread reinforcement |
| Inspection | Visual, dimension, MPI non‑destructive test, mechanical property |
| Core Performance | High impact toughness, bending‑fatigue resistance, thread chipping resistance, rod body wear resistance |
| Compatible Equipment | Various hydraulic top‑hammer rock drills, open‑pit mining and tunnel boring drilling rigs |
| Custom Service | Length customization, thread modification, special surface strengthening, non‑standard drill rod processing |
| Packaging | Anti‑rust wrapping, steel‑support wooden pallet export package |
1. Own closed-loop production workshop
2. Provide customized technical services
3. Flexible orders and complete set supply
4. Complete batch quality inspection records
5. Overseas project implementation experience
A1: If there are thread collision damages, deformation of the rod body, or visible cracks on the surface, the operation must be stopped and the equipment should be used anyway to avoid safety accidents caused by interruption of the operation.
A2: Yes, standard specifications can be tested in small batches. For non-standard products, after the measurement and mapping are completed, prototypes can also be made. After confirming the compatibility of the working conditions, mass production can be arranged.
A3: Integrated industry and trade, with a complete processing and testing workshop for drilling tools on our own. All core processes are independently completed, and video factory inspection is supported.
A4: Mixing is strictly prohibited. Incompatible thread specifications can cause overload damage to the joint and even breakage of the drill pipe. It is essential to use specifications that match the drilling rig and drill bit.
A5: Production scheduling is based on the complexity of the process. After technical confirmation, a clear delivery date will be provided. We will not make arbitrary commitments regarding the delivery time.
A6: The warranty only covers raw materials and manufacturing defects; wear and tear of rock layers, overload impacts, and improper operation-induced damages are not within the scope of the warranty.
A7: Supported. It can accommodate third parties to visit the factory, conduct size, mechanical, and non-destructive testing, and simultaneously issue corresponding certification documents.
Address
Unit1, 128Building, Nanhuxiangjun, Lunan District, Tangshan City, Hebei Province, China
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