Bolt coal wholesale | Zhengzhou Coal Mining bolt | bolt factory wholesale coal procurement | Feng

 Bolt - Xingtai City in abundance Fasteners Ltd. specializes in the production of various types and materials of anchor bolt mine, mass production, the purchase price of coal mine anchor, Xingtai City in abundance Fasteners Ltd. to provide you with The latest price quotes mine anchor bolt installation, including the anchor price, bolt manufacturers specifications bolt, bolt type, bolt action, bolt coal sales charts and other anchor bolt wholesale information for businessmen to provide the most Bolt valuable information. Bolt must have composed several factors: ① ② a tensile strength greater than the rod end of the rod of rock and soil and rock mass can be in close contact with the formation of friction (or bond) ③ resistance located at the other end of the rod outer body can rock resistance to the formation of radial rock bolt body - Xingtai City in Feng Fastener Co., Ltd. specializes in producing various types and materials anchor, mass production, price, Xingtai City in abundance Fasteners Ltd. to you Bolt latest price quotes, prices include bolt, bolt manufacturers specifications bolt, bolt type, bolt action, bolt anchor sales charts and other information, for business to provide the most valuable information bolt. Drill pipe joints anchor aperture calculation method recommended: rock: Drilling diameter = (0.9-0.95) × anchor bolt diameter drilling depth: length + 100mm bolt hole deviation of <1% coal seams: Drilling hole diameter = (0.9-1.00) × anchor bolt diameter drilling depth: length + 200mm bolt hole deviation of <1.5% [1] mine bolt wholesale | Zhengzhou Coal Mining bolt | bolt factory wholesale coal procurement | Feng provided by Xingtai City in abundance Fasteners Limited. Xingtai City in abundance Fasteners Ltd. (www.xtnfjgj.com) strong, credible, Hebei Xingtai fastener industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead fastener in abundance and you hand into the brilliant, for a better future!