What is a rubber core pulling method?
The hose shall be filled with water or gas at a pressure of 0.5 0.8N / mm before pouring concrete. At this point, the hose diameter can be increased by about 3mm. When pouring concrete, the vibrating bar should not touch the hose, and should check the pressure of the water meter regularly. If there is any change, the pressure must be filled.Smoke tube longer than tube core pulling slightly later. Before the pipe is pumped, the water is lowered and the pipe section is reduced, and the pipe can be drawn away from the concrete. The order of pumping is usually first, then first, then first, then straight.
Hose core pulling for broken line and curve type pore channels, in addition to leaving the grouting hole and exhaust hole should also set the urinary bleeding hole, hole curve (line) to stay in the top hole, with the method of grouting hole.
For short component hole, a hose can be used to bend through two parallel holes; if it is used for retaining hole of long component, the two hoses of anchor can be connected by iron sheet sleeve. The length of the bushing should be 400 - 500mm, and the inside diameter should be 2 - 3mm larger than the outer diameter of the hose. The fixed position of steel derrick hose available, spaced not more than 0.5m, and fasten with steel skeleton.
When in use, one end of the hose is sealed, and the other end is inflated. A method of sealing surface of the hose end foot will truncate 1--3 rubber canvas, and then the steel pipe with coarse thread surface (steel tube with iron seal welding hose end) insertion hole, and 20 wire and hose surface densely wrapped firmly, will head with tin welding wire. Then, the valve is connected to the end of the inflatable end.
When using the core pulling method, the hole is usually made of 5 - 7 layers of canvas and 6 - 7mm thick rubber tube. The hose can be used for retaining the straight lines, curves or broken lines.
