R38 76mm 스레드 버튼 드릴 비트 평면 얼굴 드릴 비트 뚫기 바위

세레나
November 20, 2024
Video Description:
Discover the R32 Threaded Drill Rod Top Extension, designed for mining and tunneling operations. These high-strength steel rods feature threaded connections for easy assembly, ensuring efficient drilling into rock and soil. Perfect for professionals in mining, construction, and geotechnical engineering.