Liaocheng is Zeyu Co., Ltd. is a hexagonal hollow steel, hollow hexagonal steel, hexagonal hollow steel, hollow hexagonal, hexagonal lance, lance hexagonal hollow hexagonal drill rod with steel, hexagonal hollow steel hexagonal hollow steel, hexagonal hollow drill steel, triangular hollow steel, circular hollow steel production, services, new product development in one of the large-scale production of various: hexagonal hollow steel, hollow hexagonal steel, hexagonal hollow steel Hexagon solder steel, hollow hexagonal, hexagonal lance, lance hexagonal hollow hexagonal, hexagonal hollow steel, hexagonal hollow steel, hexagonal drill pipe, hollow steel triangular, circular, hollow drill steel. The company strictly according to GB / T1301-2008, GB / 6481-2008 two national standards organization of production, product passed ISO9002 quality system certification, the company produces a hollow solder steel B19, B22, B25, B32, B35 and other hollow hexagonal steel, S22, S25, S32, S35 series hexagonal solid steel, D26, D28 hollow steel solder, D30, D32, D38, D40, D45, D50, and other heavy-duty drill rod, which D38, D40 opening solder widely used in metallurgy industry in the domestic large blast furnace commonly used, greatly reducing the labor intensity smelting workers. Praise users. Three hollow steel rolling process with a core drilling method ── hot rolled, hot to wear - Thermal pull method, thermal wear - hot rolling, hollow steel surface comparison of three macroscopic and microscopic processes of production quality, the use of this Three processing technology H22-40SiMnCrNiMo Rod industrial assessment test results showed that: drilling with a core drill rod hot rolling wear life than hot - hot pulling method, thermal wear - hot rolling brazing rod length, the existing Thermal wear - hot and hot to wear pull - Rod hot rolling life is basically the same, but the failure modes and the longest life expectancy analysis, thermal wear - Specific heat through hot rolling - Hot Rod pull method of increasing life expectancy, potential great. Liaocheng Zeyu Metal Products Co., Ltd. is a hexagonal hollow steel, hollow hexagonal steel, hexagonal hollow steel, hollow hexagonal, hexagonal lance, lance hexagonal hollow hexagonal, hexagonal hollow steel, hexagonal hollow steel, hexagonal drill pipe, hollow steel triangular, circular hollow steel, material: 45 #, 55SiMnMo, 60Si2Mn, 40simncrnimo, 42CrMo, 23CrNi3Mo, 95CrMo, 35SiMnMoV, 22SiMnCrNi2Mo, special sizes and materials can be customized according to customer requirements! The company's product quality, variety, and its excellent carbide, high-quality materials, sophisticated manufacturing technology, and technology to create classic, quality brand cast. Our products courage to similar products at home and abroad, "the same price than quality, the same quality than-grid." My company to quality, reputation first as its purpose, in close collaboration with customers willing to forge ahead, create brilliant win-win situation. We will spare no efforts to provide you with quality and efficient, honest and efficient service. [Steel] solder, solder hexagonal steel, solder steel production 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