[Popular science stickers] PVC pipes and adhesives summer construction precautions

With the gradual increase in summer temperature, special attention should be paid to the use of PVC pipes and adhesives to prevent water leakage at the pipe joints due to improper construction. Based on years of construction experience, Kaixin Pipeline Technology Co., Ltd. will now be related The precautions are explained as follows:

1. Precautions for summer construction of PVC pipes:

1. Because the weather is more prone to deform the pipes, when storing pipes in summer, the height of the pipes should not exceed 1.5 meters, and the sockets should be placed in a staggered manner.

2. PVC pipes are prone to aging when exposed to ultraviolet rays for a long time. If construction is not carried out for a short time, the pipe body should be covered with shading nets in time.

3. During the construction of TS pipes in summer, special attention should be paid to the amount of glue. When the temperature is high, the glue evaporates faster. It should be plugged in immediately after the coating is completed. After plugging, it should be maintained for 30 seconds before moving. TS pipes During the connection process, an expansion joint or looper head must be added every 50 meters. After the glue is used, the bottle cap should be covered in time to prevent the high temperature from causing the glue to volatilize and affect the bonding effect when it is used again.

4. During the construction of live casing materials in summer, PVC pipes have the characteristics of thermal expansion and contraction, so there must be a certain amount of space reserved during the live casing connection process (approximately 10mm below Ф63mm, and about 10mm between Ф75mm and Ф110mm 15mm, about 20mm between Ф140mm-Ф160mm, about 25mm above Ф200mm).

5. There are mostly small animals in summer. After the pipeline is installed, pay special attention to the coverage of the nozzle to prevent small animals from entering the pipeline to affect the pressure test of the pipeline and normal water flow in the future.

6. There is a lot of rain in summer. When the construction is completed, it should be backfilled in time to prevent the collapse of the pipe trench, which affects the normal construction and damages the pipe body, causing unnecessary trouble. In addition, it must be compacted during the backfilling process to prevent cavities in the pipe trench. The uneven force of the pipe body in the pressure-bearing process affects the pressure resistance of the pipe.

7. Before the pipeline pressure test, an exhaust valve should be installed at the beginning, end and highest point of the pipeline. The length of the pressure test should be 500m. During the pressure test, the pressure should be increased slowly and the exhaust should be continuously exhausted. When the required hydrostatic pressure is reached At the same time, it needs to stand still and hold pressure for 1 hour, and the test water pressure is 1.5 times of the working pressure.

2. Precautions for summer construction of PVC adhesive:

1. When applying adhesive, apply the socket first and then the socket.

2. Quickly insert after the application is completed, insert the small diameter by 90 degrees, and tap into the medium and large diameter.

3. Do not move for more than 30 seconds after the insertion is completed.

4. The application standard of the adhesive should be uniform and no obvious falling feeling, and avoid over-application or insufficient application amount.

5. After the glue is used, the bottle mouth should be tightened to prevent the glue from volatilizing and affecting the use effect.

6. When construction is carried out in places with poor air circulation, it is necessary to wear protective equipment such as masks.

7. If the glue is accidentally splashed into the eyes, rinse with clean water in time.