If the rotary drilling rig has done a continuous function, can be equipped with hydraulic grab or continuous milling wheel construction. If the secondary rope winch with automatic release feature hollow drill steel drill rod, drill and punch caught optional impact drilling large diameter drill pebbles or boulders. If equipped with gas chambers and faucets can be gas-liquid drilling. If equipped with dual power head or rub into the casing pipe drilling machine can be, which is to solve the flow of sand, crushed gravel, silt layer effective construction method. Underground mining Drill Drilling Tools (drill bits, drill drill drill rod, hollow steel drill rod, drill pipe, connected sets, hydraulic rock drill shank) is mainly used for off mine blast hole drilling in the deep. Drilling for underground mining vehicles wheeled structure, one or both arms arrangement can be drilled down to 360 degrees and the ring gun holes. Its main use Arbors Rod (drill), cutting deep into the hole more in the 15-20m range. In addition, foreign Arbors 32-51mm diameter drill rod from the double-end products have six wings guided drill rod (drill), in heavy drilling aperture is larger than 64mm hollow steel drill rod hole depth is greater than 18m, mostly in connection bar solder group equipped with two guided drill rod (drill / drill to ensure flatness of circular hollow steel, Shandong Peng Rui Drilling Ltd. (certified), hollow steel from Shandong Peng Swiss Drilling Technology Limited. Shandong Peng Rui Drilling Ltd. (www.zbpengrui.com) Shandong Zibo, metal cutting class leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Drilling Ltd. Shandong Peng Rui leadership with the staff warmly welcome all inquiries negotiations to create Shandong Peng Rui Drilling Ltd. a better future.