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40cm rock drill rod

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میله مته سنگ 40 سانتی متر 60 سانتی متری برای سوراخ حفاری جک چکش و شکسته

40cm 60cm Rock Drill Rod For Jack Hammer Drilling Hole And Broken Integral Drill Steels usually have forged collar, and are fixed length with a shank at one end and a bit at the other. This provides a hexagonal chuck section to provide leverage for the rotation chuck bushing. They are able to drill ...

میله مته مخروطی ابزار سنگ 7 11 12 درجه برای استخراج با کارایی بالا

High Efficient 7 11 12 Degree Rock Tools Tapered Drill Rod For Mining 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 ...