PE gas pipeline is produced by gas-specific polyethylene. It can meet the requirements of GB 15558.1-2003 and GB 15558.2-2005. It has good flexibility, strong corrosion resistance, light weight and excellent impact resistance. It adopts hot-melt docking and electricity. The connection method such as melting, the pipe and the pipe fitting are integrated, the system is safe and reliable, the construction cost is low, and the development is rapid in practical application. Vigorously promote the PE gas safety pipeline, in line with the guidelines of the Ministry of Construction and the National Economic and Trade Show to develop chemical building materials, in line with the development needs of people's living standards.
PE gas pipe product features:
Do not leak. For the purpose of PE pipe, PE gas pipe mainly adopts fusion connection (hot melt connection or electrofusion connection). Compared with rubber ring joints or other mechanical joints, there is no danger of leakage due to joint distortion.
preservative. Polyethylene is an inert material. It can withstand a variety of chemical media, except for a few strong oxidants. It has no electrochemical corrosion and does not require an anti-corrosion layer.
Good scratch resistance. It can effectively resist the stress concentration of the material caused by scratches and greatly reduce the possibility of pipeline damage.
High toughness. PE gas pipe is a kind of high toughness pipe, its elongation at break generally exceeds 500%, and it has strong adaptability to uneven settlement of pipe foundation. It is also a pipe with excellent seismic performance.
Excellent flexibility. The flexibility of the polyethylene allows the PE gas pipe to be coiled. For non-grooving construction, the direction of the PE gas pipeline is easily changed according to the requirements of the construction method.
Advanced electrofusion fitting structure. The non-naked spiral heating wire ensures uniform heat conduction in the welding zone, and effectively eliminates the short circuit when the pipe is inserted. At the same time, it avoids the defects of the exposed electric heating wire, and the inner wall of the pipe is smooth and flat, which is convenient for installation.
Good resistance to rapid crack propagation. The rapid cracking of the pipeline means that when the pipeline accidentally cracks, the crack grows at a speed of several hundred meters/second, which immediately causes a large accident of tens of meters or even kilometers of the pipeline. The rapid cracking of the polyethylene gas pipe has not been found in actual use.
Long service life, up to 50 years.
PE gas pipe test and acceptance
1. The test and acceptance of polyethylene gas pipes are in accordance with the provisions of Section VII of Chapter 7 of the current industry standard “Code for the Code and Acceptance of Urban Gas Transmission and Distribution Engineering and Acceptance” (CJJ33-89).
2. The PE pipe manufacturer chooses to install the polyethylene gas pipeline system. After the visual inspection is passed, the whole system should be partially purged. After the purge is passed, the strength test and the air tightness test can be carried out. If the detergent or soap liquid is leaked during the strength test, the soapy water after the leak detection detergent should be flushed with water after the test is completed.
3. Compressed air should be used for purging and acceptance medium, and its temperature should not exceed 40℃.
4. A separator or filter should be installed at the outlet end of the compressor to prevent harmful substances from entering the polyethylene gas pipeline.
5, the use of PE pipe in Shandong Linyi Polyethylene gas pipeline for strength test, should be slowly boosted, after the test pressure should be stabilized for 1 hour, no pressure is qualified.
6. The strength test pressure of polyethylene gas pipe should be 1.5 times of the design pressure of the pipeline, the minimum of medium pressure pipeline should not be less than 0.3mpa, and the minimum pressure of low pressure pipeline should not be less than 0.05mpa.
PE gas pipe installation precautions
1. After the gas pipe is installed, it must be properly protected (especially when tiling), and the gas pipe must not be dismantled, moved, touched, smashed, squeezed or pressed to ensure that the gas pipe is intact and intact.
2. Do not disassemble the gas pipeline (including the pipeline fixing hook or pipe clamp) and the water heater. It should be installed by the professional technicians of the relevant gas company to ensure safety.
3. Remember not to seal the gas pipe, especially the main valve of the entire building and the gas meter in each user's home. If you need to decorate it, you can make a door cabinet or leave a ventilation hole. Leave enough space for maintenance and security inspection.
4, Shandong Linyi PE gas pipeline can not be buried in the wall and not less than 250px from the ground. The gas pipe is not allowed to pass through the wall and should not be too long. The cooker hose should not exceed 2 meters.
5. A room with a gas pipeline cannot be used as a bedroom to avoid gas leakage, fire, and life-threatening safety. At the same time, the kitchen or room through which the gas pipeline passes cannot stack flammable and explosive materials.
6. If the indoor pipeline has been gas-filled and found that the indoor gas leaks, first close the gas valve in front of the watch, open the ventilation of the indoor doors and windows, prohibit the opening of electrical switches and other behaviors that may cause sparks, prohibit open fires, and call for help outside. .
In short, safety is the first point in the installation of PE gas pipes. For the choice of PE pipe manufacturers, PE gas pipes with the certificate of China City Gas Association should also be selected.
PE燃气管
PE燃气管
PE燃气管
