... , HQ, PQ drill rod 2. Tapered drill rod, integral rod 3. Twist rod, extension rod, exploring water drill rod Specialisted in ... , including of twist drill rod, extension rod, tri-angle rod, integral drill rod, water exploring rod, tapered drill rod, etc. ... drilling needs. They are used for electric coal drill anchor bar, which is ideal and necessary tools ... free to contact with us. Anchor shank drill rod