Product Name: Anti-down chain pillar mining method using anti-down chain applications better able to protect the safety of mine workers, improve work efficiency. Simple and practical anti-down chain structure, there are various parts of a strong clip, chains, hooks fixed three connected components. Commonly used is 0.6 meters in diameter is 6mm chain Product Description: The company operating the anti-down chain, quality assurance, for hydraulic pillar, pillar to avoid injury accident due to the dumping of relief, simple operation, improve efficiency, and cheaper prices. Usage: Anti-down chain easy to install, the end of the anti-down chain belt clip stuck in the metal roof beams (or π-beams, hinged roof beams) on the chain and hook connected and fixed single pillar column can be used. Maintenance: Anti-down chain cleaning: After refueling, slowly reverse tooth plate, from the inside out after the call chain links should be able to be straightened, if any, anti-down chain also maintained a certain angle, indicating that it is not smooth action belonging to a deadlock, should be adjusted. Anti-down chain is mainly used for coal support in connection π-beam and single pillar, to the role of a fixed single pillar, thus avoiding the pillar relief due to the dumping of injury accident. Contact: Wu Jingli Mobile: 18653822725 landline :0538-8530018 QQ: 635395409 Fax 0538 -8530316