Tapered Rod H22 Suppliers & Manufacturers - Factory Direct ...
Tapered Rod H22. Drill rod is also called drill pipe, it is made by high quality carbide and 55 SiMnMo steel. Tapered drill rods are used in granite and marble quarry, gold mine, railway, tunnel, for drilling. There are two standard steel hex diameters - 22mm or 25mm. And Our tapered bit and rods come in a variety of taper angles(6 degree, 7 ...
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