Detailed explanation of hot melt connection of HDPE drainage pipe

Nowadays, HDPE drainage pipes are used in more and more places. In municipal engineering projects and large-scale construction projects, the preferred drainage pipe is still HDPE. We already know the characteristics of HDPE pipe very well, so today Yitong pipe will give you a brief explanation of the hot melt connection method of HDPE drainage pipe.

Installation requirements for hdpe drain pipes:

1. Before construction, do a secondary visual inspection of pipes, fittings, etc., and those found to have problems cannot be used.

2. Due to the light weight of the tube body, it can be moved manually during the installation process. Generally, no machinery is required. Therefore, when it is placed in the trench, it must not collide with the wall and bottom of the trench.

3. When installing valves and pipe fittings with flange connections, measures should be taken to prevent external tensile stress. Brick buttresses should be installed under valves with a diameter greater than 100mm.

4. When the hdpe drainage pipe crosses obstacles such as railways and highways, casing pipes should be installed to protect the pipes.

5. When the pipeline installation and laying works are interrupted, use wooden plugs or other cover plugs to close the pipe openings to prevent debris from entering the pipeline.

6. When welding pipe fittings, the heating head corresponding to the size of the pipe to be welded should be assembled to the welding machine, connected to the power supply, and waiting for the heating head to reach the best temperature of 260 ℃, and at the same time insert the pipes and fittings into the fusion splicer, according to the specified time After heating, take out the pipe and pipe fittings and connect them immediately. When the pipe and pipe fittings are connected and matched, if the positions of the two are not correct, a small amount of adjustment can be made within a certain period of time, but the torsion angle should not exceed 5 degrees.

Detailed explanation of hot melt connection of HDPE drainage pipe

Several issues that should be paid attention to:

1. When laying HDPE drainage pipes, try to avoid crossing the corroded and polluted pipe sections. When crossing the pipes, it is necessary to install casing pipes.

2. Prevent the pipeline from floating during construction in rainy season or areas with high groundwater level.

3. The backfill of the pipe trench should be compacted in layers. If the pipe crosses the road, in order to avoid crushing the pipe body, the top of the pipe can be fully backfilled with coarse sand.

4. The pipe has good toughness and flexibility. When installing, make full use of this point for laying. Generally, the bending buried radius R of large-diameter pipes should be greater than 30D, but no pipe fittings, valves, water meters, etc. should be installed in the bent parts. .

5. During the construction process, the welded parts of the pipe and fittings should be cleaned in time to avoid weak hot-melt bonding caused by contact with water, sand, dust, etc.; at the same time, a pencil should be used to mark the hot-melt depth on the pipe.

6. Like other plastic pipes, hdpe drain pipes should be protected from direct ultraviolet rays.