42crmo | 42crmo round drill | Zeyu metal provided by Zeyu metals. Liaocheng Zeyu Metal Products Co., Ltd. (www.zk55simnmo.com) Shandong Liaocheng Premium Business League certification company, has Zeyu other brands, has a good reputation, honesty, service-oriented "business alliance customer service" on page click icon, we will be happy to serve you! Liaocheng Zeyu Metal Products Co., a large professional 55simnmo hollow steel production enterprises, is the material produced Rod's 42crmo round drill pipe, drill rod is one of the major consuming tool drilling equipment 42crmo hollow drill rod, mainly used in mining and extractive construction of building railways, roads, canals, dams, defense readiness of the project. Sectional shape of a hollow steel round, hexagonal, steel can be divided according to the hollow carbon steel and alloy steel hollow two categories. Use can be divided into the deep hole drilling hollow steel drill rod connection, shallow hole drilling hollow steel drill rod drill rod and specialty uses hollow steel categories. Production methods are hollow steel cast pipe method, drilling method, perforated - pull system of law, perforated - hot rolling, hot extrusion coating method and the like. Liaocheng Zeyu Metal Products Co., hexagonal hollow steel - hollow hexagonal - hexagonal hollow steel - hollow hexagonal - hexagonal hollow steel - hollow hexagonal steel - steel hexagonal hollow - hollow hexagonal steel - round hollow drill 42crmo steel, hexagonal hollow steel - hollow hexagonal steel - hexagonal hollow steel - hollow hexagonal - Hexagon lance - rowed lance - hollow hexagonal - hexagonal hollow steel - steel hexagonal hollow drill-60Si2MnA Hexagon Hexagon 55SiMnMo Rod-40SiMnCrNiMo hollow hexagonal drill-95CrMo hexagonal hollow drill - drill, hex drill rod specifications: H19, H22, H25, H28, H32, H35. Material: 55SiMnMo, 60Si2Mn, 40simncrnimo, 42CrMo, 23CrNi3Mo, 95CrMo, 35SiMnMoV, 22SiMncRNi2Mo, special sizes and material can be customized according to customer requirements! Liaocheng Zeyu Metal Products Co., Ltd.