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 function, optional percussion drill bit and drilling large diameter drill GRABBING 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. Threaded Rod include Arbors Rod, Rod Light Arbors, Drill drill rod and MF Rod, etc., to these basic requirements Rod mainly in the following aspects: (1) high fatigue strength and high fracture toughness cooperation. Threaded Rod fracture mainly fatigue fracture, mainly because of the rock drill drill rod to bear the high impact force and thrust hollow steel shaft and threaded drill rod is an elongated rod, drilling and horizontal drilling in the oblique When the rock drill rod hollow steel, brazing with the group due to the weight of influence, often also makes drill rod bending stresses. Therefore, the threaded rod brazing material must have high fatigue strength and high fracture toughness. (2) good flexibility and abrasion resistance. Threaded Rod in the drilling process, whether it is the level of operation, vertical or diagonal jobs Rod drilling operations, due to changes in the thrust of rock drill, rock inhomogeneities or presence cracks, holes, when opening the eyes of the rock face of injustice through Large or incorrect operation of opening the eyes, etc., are often so drill rod bent in different states. If the bending state of serious or Rod poor elasticity, it will cause a broken drill rod bent early failure. So, Rod must have good flexibility. Threaded Rod ends of the thread structure, is an important part of the entire solder connection and transmission of rock stresses. Analysis, is the most important part of the threaded portion of the threaded drill rod failure, the failure mechanism is fretting wear has the role and impact of the results, therefore, threaded parts wear is often the determining factor Threaded Rod life. Rock drill rod, drill Ltd. Shandong Peng Rui (Certified), hollow steel drill by Shandong Peng Rui Technology Limited. Drilling Ltd. Shandong Peng Rui (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. Shandong Peng Rui Drilling Ltd. led the staff warmly welcome all inquiries negotiations to create Shandong Peng Rui Drilling Ltd. a better future.