Min. Order Reference FOB Price
5 Pieces Negotiable
Product Description
Product Description 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, etc. for drilling. Product Description 1) taper angle(degree): 4.46, 6, 7, 11, 12 2) shank size: ...