Hubei GB 15558.1 PE gas pipe | Polyethylene pipe for gas, standard product

[GB15558.1 standard PE gas pipe core performance requirements]

GB15558.1 is the national mandatory execution standard for polyethylene pipes for domestic gas. Products that meet the standard must meet a number of core indicators such as hydrostatic strength, elongation at break, resistance to slow crack growth, and heat resistance stability. The conventional service life can reach 50 years. In view of the climate characteristics of large temperature difference in winter and summer in Hubei and high humidity in some areas, the PE gas pipes that meet the standard also need to have good low temperature impact resistance and anti-aging performance to avoid pipe brittleness and performance degradation in extreme weather.

[Key points of PE gas pipe selection in Hubei]

In the procurement stage, it is first necessary to confirm that the execution standard marked on the outer wall of the pipe is clearly GB15558.1. At the same time, check that the marked pressure level matches the gas transmission pressure requirements of the actual project. The buried laying scene needs to select the corresponding wall thickness according to the buried depth and ground load. In addition, ask for the matching factory test report, check that the test data meet the standard requirements, and avoid the safety hazard of gas leakage left by non-standard products flowing into the project.

[Precautions for construction and operation and maintenance of standard PE gas pipe]

Before construction, the appearance of the pipe needs to be checked section by section. The part with a scratch depth of more than 1mm on the surface needs to be cut off. The hot-melt and electrofusion connections need to be operated in strict accordance with the process parameters to avoid the problems of virtual welding and leakage welding. The groundwater level in some areas of Hubei is high, and temporary drainage measures need to be taken after the trench is excavated to avoid the floating displacement of the pipe during the laying process. After the completion of the project, the air tightness test needs to be done according to the specifications. The subsequent operation and maintenance stage also needs to regularly check the sealing of the interface to ensure the long-term stable operation of the gas conveying system.