Guangyuan City, Sichuan Metal Corrugated Pipe 24-hour sales hotline 15933187015

内径：

50mm

Sales of prestressed corrugated pipes, metal corrugated pipe manufacturers wholesale wholesale
Grasp the key points of quality control
The tunnel must be sealed, clean and dry
The slurry is strictly controlled according to the construction mix ratio
On-site construction quality Management control.
Solve issues related to the construction process
In view of the characteristics of the curved channel, an observation valve should be set at the same end of the highest point of each wave crest of the corrugated pipe, higher than the concrete.
For grout pipes, high-strength hoses should be used, which have the ability to withstand pressure and are not easy to break during high-pressure grouting. Pay attention to the secure connection and not to remove the pipe.
The mortar should be filtered through a screen before entering the grout pump.
The mixed cement slurry must be tested for fluidity and bleeding, and the slurry strength test block must be poured.
When carrying out grouting work, it is advisable to carry out one-time grouting in the inner channel before the fluidity of the mortar decreases.
During the pipe replacement time, continue to start the grouting pump to allow the slurry to circulate.
The number and location of grouting holes must be recorded to prevent leakage of grouting.
The slurry storage volume of the slurry storage tank should be larger than the volume of a prestressed hole to be poured.