Liaocheng Zeyu Metal Products Co., Ltd. (www.zk55simnmo.com) located in Liaocheng, Shandong Liaocheng Development Zone Industrial Park, Contact: Mr. Sun Metal Products Co., Ltd. Liaocheng Zeyu geological drill pipe grade R780 R780 (42MnMo7 ). The steel tube wall thickness, diameter moderate DZ40 geological drilling casing, performance stable DZ50 alloy steel grade geology casing, torsional resistance. In geological core drilling, water well drilling, hydrogeological drilling, drilling for the project have played a better performance and standards. Liaocheng Zeyu Metal Products Co., geological drill suitable geology, hydrology, coal, geothermal, 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 the get JSO9002 quality system certification in China Anshan Steel, Bao Steel, Hengyang Steel, Bao Steel, Daye five famous steel mills. Geological drilling pipe size, shape, weight, technical requirements, test methods, inspection rules, packaging, marking and quality certification have strict regulations. The company's geological drilling seamless steel pipe used in all of the original factory logo, the user presses the contract grade (grades) delivery, marking and quality certification of steel steel grade (grade) said. Now on sale geological drilling pipe steel grade has DZ40, DZ50, DZ60, R780