Liaocheng Zeyu Metal Products Co., Ltd. (www.zk55simnmo.com) is located in Liaocheng, Shandong Liaocheng Development Zone Industrial Park, Contact: Mr. Sun Liaocheng Zeyu Metal Products Co., Ltd. is a drill rod, mining drill rod, hex brazing bars, hexagonal hollow steel, hexagonal lance, circular hollow steel, spiral drill rod, twist drill rod, geological drill pipe, drill pipe manufacturing, services, new product development in one of the large enterprises, the company is located in the beautiful scenery Jiangbei Watertown ancient canal (Liaocheng), a prominent position the company, producing all kinds of transport facilities: hexagonal hollow steel, hexagonal lance, hexagonal drill rod, round drill rod, drill rod drilling machines, mining drill rod, 55SiMnMo Rod , 60Si2Mn drill rod, 40simncrnimo Rod, 23CrNi3Mo drill rod, drill rod heavy, solid twist drill rod, hollow twist drill rod, drill rod hexagonal screw drill rod specification: H19, H22, H25, H28, H32, H35 Round Rod Specifications: D32, D38, D45, D51 twist drill rod into two kinds of solid and hollow, respectively: Φ26, Φ28, Φ30, Φ38, Φ40 and other materials: 45 #, 55SiMnMo, 60Si2Mn, 40simncrnimo, 42CrMo, 23CrNi3Mo, 95CrMo, 35SiMnMoV, 22SiMncRNi2Mo, special sizes and materials can be customized according to customer requirements! Products are widely used: rock mining, mining, railway, tunnel engineering, metallurgy, coal, water conservancy, mountains, quarrying, smelting blowing. Special note: due to market confusion, criminals taking pictures of our products and the information content of fraud, hope our customers to conduct site visits prior to the transaction of their companies, find out if the other party has the production capacity, whether there spot. Study may not ask the company to its real photos, related documents and product samples, to avoid being taken, resulting in unnecessary economic losses. Hollow drill steel (also known as the drill steel) are making mountains drilling tool steel, hollow steel and solder products are high-tech, high value-added steel products, there are good economic and good development prospects. To cultivate our specialty products, improve product mix, under the guidance of well-known experts in the drill steel, decided to produce B22 hollow drill steel, is by Liaocheng Zeyu Co. research and development, the company strictly according to national standards GB / T1301- 2008 solder brazing with hollow steel, and GB / 6481-2008 two national standards, products passed ISO9002 quality system certification, the company produces a hollow solder steel 19,22,25,28,32 and 35 other hollow hexagonal, 22,25,32,35 series of hexagonal drill rod with a solid steel, D26, D28, D30, D32 solder drill rod with steel, D38, D40, D45, D50, and other heavy-duty drill rod, which D38, D40 opening Brazing is widely used in metallurgical industry, widely used in domestic large blast furnace, greatly reducing the labor intensity of smelter workers. Praise users. , Rock Drilling diameter perforated due to restrictions in the drilling and blasting works, which are very small cross-sectional area. However, this slender rod, have to wear under severe conditions and corrosive media effect, withstand high frequency (2000 to 3000 /ml.r·), high impact energy (about 294J) pull exerted drills , compression, bending, twisting and other cyclic stress. Depending on the load size and rock solid and other conditions, the rock life is often only a few minutes to ten hours. Solder steel types, you must first meet with solder basic features of this work