Mine uses a lot of metal friction pillars, he uses the friction between the metal and the working face of the roadway support, is a low cost effective mine support equipment responsible for changing the length of the metal pillars and friction to metal friction Equipment pillar setting load applied column is called up. Normally, lift column can be divided into hydraulic lift column and mechanical lift column is two. Mine hydraulic lift column, mechanical hydraulic lift column is the application of technology and equipment manufacturing coal mine liter column tool for HZWA type used in a slight increase in coal mining face resistance metal prop set stays tight purposes. Compared with the mechanical lift column is not only compact, convenient and effortless operation, supporting high-speed fast, the most prominent advantage is initial support force. For mine roof fall accident reduction, to ensure safe production effect is very obvious, won miners welcome. 30mm diameter 10mm diameter cylinder plunger handle length 400 mm nominal setting load 49KN (5T) maximum rated working pressure of the fluid rises 120mm 703Kg / mm2 support processes (full stroke swing handle 10 times the amount raised) 31 Octagon Mining Machinery Co. The company mainly produces hydraulic prop, U-shaped Karan, card view, π-beams, metal roof beams, hinged roof beams, hydraulic prop control, lift column Phone: 0537-2164096 Fax: 0537-2280553 Mobile: 13295479531 Manager: Chen QQ: 2462697944