Liaocheng Zeyu Metal Products Co., Ltd. specializes in the research and sales of rock drilling tools of high-tech enterprises, with annual sales revenue of over billion, the overall strength in the forefront of the industry. Companies with a cautious attitude and marketing of high value-added products and services, the successful integration of the advantages of today's Zeyu metal alloy brazing rod hollow steel drill rod of mine for the world's service industry has laid a firm foundation. Production Material Grade Material: 45 #, 55SiMnMo, 60Si2Mn, 40simncrnimo, 42CrMo, 23CrNi3Mo, 95CrMo, 35SiMnMoV, 22SiMnCrNi2Mo alloy hollow drill steel, steel alloy brazing with various hollow hollow steel specifications, special sizes and materials can be customized according to customer requirements! Our products are widely used in tunneling, construction, mining and rock engineering, trusted by the user. Companies adhere to the "quality first, users first" purpose, to provide high-quality products hollow alloy steel for all customers, and to establish a good working relationship, and exported to: North Korea, the US, Japan, Canada, India, Australia, Nigeria, South Korea, more than 20 countries. The company has strong technical force, advanced detection methods, first-class service team. Develop technology to innovate and develop new products to meet customer needs. Liaocheng Zeyu Metal Products Co., Ltd. Since the construction, I plant technology-driven, market-oriented, and gradually expand capital investment, has introduced a large-scale production equipment, in 2000-2005, the city's first assessment of the quality. By the provincial and municipal departments, quality supervision units strongly commended and the trust of customers. Our strength, excellent equipment. Production of a variety of triangular hollow steel - hexagonal hollow steel - steel circular hollow, generally praised by users. Material: 45 #, 55SiMnMo, 60Si2Mn, 40simncrnimo, 42CrMo, 23CrNi3Mo, 95CrMo, 35SiMnMoV, 22SiMnCrNi2Mo, special sizes and materials can be customized according to customer requirements! 】 【Alloy steel hollow, hollow drill rod alloy steel, hollow steel Zeyu cards provided by Zeyu metal. 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