02 One-line brazing head The one-line series brazing head has simple manufacturing process, convenient regrinding, reliable work, and strong adaptability to rock mass performance. It is often used with light internal combustion, electric, pneumatic and hydraulic rock drills to drill holes with a diameter of D50mm or less in various rocks. Due to its low price and other characteristics, it is still the main type of brazing head used in medium- and small-diameter rock hole drilling projects in China's mining industry. The one-line brazing head of our company has the following significant advantages: 1. Complete specifications range from diameter 20 to diameter 30, diameter 32 to diameter 43, diameter 45 to 60, etc. 2. Reasonable material selection, excellent manufacturing and strict quality control, not only pay attention to the intrinsic quality of the product, but also the very fine surface treatment of the product. 3. Scientific design, beautiful appearance, unique packaging. 4. The product structure is reasonable, high, medium and low grade products to meet the needs of different customers. The alloy classification is suitable for rocks with different hardness coefficients. 5. Be brave in innovation and continuous improvement. 6. Smooth sales channels and sound service networks. [Product details of coal mining drill bits] 1. Long service life of the drill bit: the carbide brazing blade adopts proprietary technology, the strength is ≥2800N, and the hardness (HRA) is ≥922. Drill pants body does not break: the brazed pants body is made of high-strength tool steel. After strict heat treatment, the pants body has high strength to avoid the pants from breaking during drilling 3. The variety and model are complete, which can meet the mining of various rock hardness levels. The one-line series brazing head has simple manufacturing process, convenient regrinding, reliable work, and strong adaptability to rock mass performance. In drilling work on concrete, etc., the sudden change of drilling state can be mitigated, and the drilling efficiency is not reduced even when large chips are generated. It is often used with light internal combustion, electric, pneumatic and hydraulic rock drills to drill holes with a diameter of D50mm or less in various rocks. Due to its low price and other characteristics, it is still the main type of brazing head used in medium- and small-diameter rock hole drilling projects in China's mining industry.