DW35 hydraulic prop, mining hydraulic prop suspension, Sichuan hydraulic prop manufacturers, hydraulic prop within the injection, DWB FRP hydraulic prop, one meter hinged roof beams, Jining, Shandong, Heilongjiang Prop with hair Mining Machinery Co., Ltd. for the Ministry of Coal Industry Supporting products manufacturing enterprises, the products safety mark issued by the Office product safety certification mark, the company is located in the coal-rich city, known as the hometown of Confucius ceremonies of Jining City, the company is the production Mine Support Products professional manufacturers, advanced management methods, sophisticated production equipment, strong technical force, detection equipment. 100 Bore Mine Spec suspension hydraulic prop DW35-200 / 100X 3500 1980 1520 71 1970-3500 27.4 200 DW42-250 / 110X 4200 2360 1840 98 2335-4200 28.3 250 DW45-250 / 110X 4500 2520 1980 103 2485- 4500 28.3 250 Product Features 1. With strong anti-bias load capacity and greater stability. 2. Low light weight and high reliability 3. 4. 5. intensive work schedule large and easy to use 6. 7. 8. repair and maintenance costs of water use neutral-type hydraulic prop DWX works include lift column, beginning palm carrying and prop four processes, respectively, are summarized as follows :( a), lift column, the piping system liquid injection gun insertion process early palm-liter three-valve cylinder liquid injection valve hole, hang up the locking sleeve operating liquid injection gun, pumping high-pressure fluid through the fluid injection gun to open the top three with a ball-type check valve in the valve, through the injection hole into the cylinder and between the plunger and then into the living through the inlet hole bottom of the plunger forcing the plunger cavity column elevated prop hinged roof beams. (Two), bearing, after the overflow will be in the process of setting prop bearing state, with the extension of support time, face roof pillar load acting on the increase, when the pillars of the loads exceed the rated working resistance, pillar cavity pressure liquid valve pad in force, it is set in advance over valve springs give hexagonal guide sleeve pressing force, the compression valve springs, valve guide sleeve pad and hex movement together, leaving the valve seat cushion safety valve is opened, the lumen liquid spills, live under the column shrink, so the roof pressure to regain balance. (Three), while prop pillar recovery process will unload valve handle insert with three holes to uninstall, uninstall rotating handle, forcing the whole axial valve cover, screw links, oiling the body, such as moving, unloading valve spring compression, unloader valve pad spring, unloading valve sealing surface mat leave, unloading valve is opened, the pillar cavity fluid is injected into the cylinder through the valve gob plunger retraction under its own weight and the return spring. Complete pillar recovery. Hydraulic prop, floating hydraulic prop manufacturers, DW hydraulic prop, hydraulic prop accessories within single hydraulic prop, glass, steel hydraulic prop, three valves, emulsion pump, metal roof beams, iron shoes