
Rock Drilling Tool 7 Degree Tapered Drill Rod for Small Hole Drilling Mining Machinery. Customizable Color: Available in Black or customized color options to meet specific requirements. High-Strength Alloy Steel: Manufactured with 55SiMnMo alloy steel ensuring durability and wear resistance. Optimized Hardness: Rod hardness reaches HRC32-35; adapter hardness reaches HRC49-57 after treatment. Wide Application Range: Suitable for mining, quarrying, tunneling, and small aperture blasting construction. ISO 9001:2008 Certified: Product quality and manufacturing processes meet international ISO certification standards. Flexible Customization: Supports full customization including shape, color, and design based on samples. Comprehensive Warranty: Includes 3-month warranty coverage with quality assurance service for mechanical defects. Low MOQ: Minimum order quantity starts from 1 piece or 1 set, suitable for small trials.