H22 11 Degree Taper Drill Rods for Drilling, Barras Conicas Hexagonal Drill Rod Taper Drill Rod is used for rock drilling, blasting holes and other drilling situations, including quarries, coal mines, traffic ... อ่านเพิ่มเติม
7 Degree Tapered Drill Pipe H22 Hexagon Drill Rod For Mining Prodcut information: Tapered drill rod is also called the Hexagonal Drill Rod.The rod is used for rock drilling, blasting holes, and drilling works ... อ่านเพิ่มเติม