Liaocheng Zeyu Metal Products Co. of DZ50 steel (YB235-70) Steel hollow section, a large number of pipelines for transporting fluids DZ50 geological casing, such as the transportation of oil, gas, gas, water and some solid materials and so on. Use can be divided into the drill pipe, drill collar, core pipe, casing and precipitation tubes. Drill pipe: the drilling tool connected to the drill bit, for transmitting the power lever. Usually part of the drill string are: drill, drill collars, drill pipe, stabilizers, special fittings and kelly. The basic role of the drill string is: (1) from under the drill bit; (2) imposed WOB; (3) transfer power; (4) conveying fluids; (5) special job: squeeze handle mine accidents. Drill Collar (drill collar): in the lowest part of the drill string DZ50 alloy casing geology, is a major component of the BHA. Its main feature is a large wall thickness (typically 38 ~ 53mm, equivalent to 4-6 times the drill pipe wall thickness) geological sleeve, with great gravity and stiffness, which mainly acts in the following areas during drilling : (1) the pressure applied to the drill bit; (2) to ensure the necessary strength under compression; and (3) to reduce the vibration of the drill bit, swing, and beating and other geological DZ40 casing, the drill steady work; (4) the control deviation . Collars have many different shapes, such as round, square, triangular, and spiral. The most commonly used is circular (smooth) drill collar and spiral drill collars two kinds. Liaocheng Zeyu Metal Products Co., geological drill applies to geology, hydrology, coal, geothermal and engineering drilling. The main products include Φ42, Φ50, Φ60, Φ63.5 geological drill pipe. Geological drilling seamless main technical indicators strict implementation of international standards. Sales (inventory) of drilling pipe from obtaining JSO9002 quality system certification of China Anshan Steel, Bao Steel, Hengyang Steel, Steel, Daye five famous steel mills. Geological drilling pipe size, shape, weight, technical requirements, test methods, inspection rules, packaging, labeling and certification requirements are strict. The company's geological drilling seamless pipe used in all of the original factory logo, the contract user presses grade (grade) delivery, steel pipe marking and quality certification of steel grade (grade) said. Now sold geological drilling steel steel grade has DZ40, DZ50, DZ60, R780 [geology] casing, DZ50 alloy casing geology, geological casing provided by Zeyu metals. Welcome to consult Liaocheng Zeyu Metal Products Co., Ltd. (www.zk55simnmo.com), be sure to specify when the contact is through the "Business League members" see, thank you! Contact: Mr. Sun