7 Degree Tapered Drill Rod For Mining

Supported by the team of experts, we are the leading Exporter, Supplier and Trading Company of 7 Degree Tapered Drill Rod For Mining in Luoyang, Henan, China. Our raw material is from 320*480 large-section continuous casting billet, then rolling into 150*150 square billet by drilling holes and inserting seamless pipe, and made of 55SiMnMo. The whole production involves multiple processes, including steel rolling, forging, quenching and tempering, etc. According to the different choices of customers, our company has different quality products, such as extra-excellent, excellent, ordinary drilling rod, etc. Customers can choose suitable drilling rod according to different hardness of rock and types of jack hammer. Extra-excellent drilling rod QSAAA and GTIII can be applied to solid rock, III level or above and fa Y12 rocks according to Protodikonova s Hardness Coefficient of Rock. Excellent drilling rod QSAA and G30 is suitable for IV level or above and fa Y12 rocks, ordinary drilling rod suitable for IV level or below and fa 8 rocks.