Hubei PE gas pipe, old pipe network transformation compliance pipe

PE gas pipe is a special pipe for gas transportation produced by extrusion process with special polyethylene resin as raw material. It is one of the widely used compliance pipe categories in the field of urban gas transportation. It is also a replacement pipe explicitly recommended by the old gas pipe network renovation project in Hubei Province. The nominal diameter range of the product covers 20mm to 1200mm, and the nominal pressure level covers 0.2MPa to 1.6MPa, which can meet the pressure requirements of gas transportation in different scenarios. The whole process of product production and testing strictly follows the relevant national standards. All performance indicators meet the requirements of gas transmission and distribution.

core selling point

#Weathering and corrosion resistance to adapt to Hubei regional characteristics

Hubei is located in a subtropical monsoon climate zone. The highest temperature in summer can reach more than 40 ° C, and the extreme low temperature in winter can reach minus 5 ° C. The soil acid-base value in some areas along the river and lake is high. The underground pipe network in the old city is mixed with sewage pipes and power pipelines. There are many stray currents and corrosive media. Traditional metal pipes need multi-layer anti-corrosion treatment and subsequent maintenance costs are high. PE compliance gas pipes have excellent chemical corrosion resistance, which can withstand most acid-alkali soils and underground medium erosion without additional anti-corrosion treatment. At the same time, the material itself has good weather resistance and anti-stray current performance, which can adapt to temperature changes and complex underground environments in Hubei. The design service life that meets the requirements of the national standard is not less than 50 years, which greatly reduces the operation and maintenance cost of the whole life cycle of the pipe network.

#Anti-leakage adaptation transformation core requirements

The core goal of the renovation of the old gas pipe network is to eliminate the hidden danger of leakage and reduce the risk of gas safety accidents. The compliance PE gas pipe adopts two mainstream connection methods: hot melt docking and electrofusion connection. The strength of the interface after connection is higher than the strength of the pipe body, which can realize the integrated sealing of the interface and the pipe. There is no leakage risk caused by the aging and loosening of the traditional metal pipe interface. At the same time, the pipe itself has good toughness and anti-deformation ability, which can adapt to the pipeline displacement caused by uneven settlement and mild geological changes in the old city. It greatly reduces the leakage probability during the operation of the pipe network and improves the safety of gas transportation.

#Convenient construction reduces the comprehensive cost of transformation

Many old urban areas in Hubei Province have narrow streets and alleys, complicated underground pipeline arrangements, limited construction space, large weight of traditional metal pipes, and cumbersome welding and anti-corrosion processes, which can easily lead to problems such as long construction period and great impact on residents' normal gas consumption. The weight of compliance PE gas pipes is only about 1/8 of the same specification steel pipes, the difficulty of transportation, hoisting and on-site handling is low, the welding process is simple to operate, and there is no need to carry out anti-corrosion construction. It can greatly shorten the on-site operation time, and the construction flexibility in narrow spaces is higher. It can effectively reduce the gas stop time in the process of pipe network transformation and reduce the impact on the normal production and life of residents and industrial and commercial users. The overall comprehensive construction cost of the project is lower than that of traditional metal pipes of the same specification.

#Stable operation reduces long-term operation and maintenance pressure

The inner wall of the compliance PE gas pipe is smooth and the roughness is only 0.008mm. The gas transmission efficiency under the same diameter and pressure is about 10% higher than that of traditional metal pipes. There will be no scaling and rust problems on the inner wall during long-term operation, and the transportation performance remains stable. At the same time, the pipe itself has strong damage resistance. There is no need to carry out regular anti-corrosion testing, rust removal and other operations in the daily operation and maintenance process. The operation and maintenance cost is much lower than that of traditional metal pipe networks, which is suitable for the long-term stable operation of urban gas pipe networks.

Applicable scenarios and suitable populations

Applicable scenarios include: first, the old gas pipe network renovation projects in cities, counties, and districts in Hubei Province, especially the old metal pipe network replacement projects with an operating life of more than 20 years and hidden dangers of leakage; second, the construction of new municipal gas main network and branch pipe network; third, the construction project of gas-entry pipe network and courtyard pipe network in residential quarters; fourth, the construction project of exclusive gas transmission pipe network for industrial and commercial users; fifth, the industrial gas transmission project with some pressure levels meeting the requirements.

Applicable groups include: municipal engineering construction management units at all levels, urban gas operating enterprises, gas engineering general contractors, gas engineering design units, and persons in charge of gas facility construction for civil and industrial and commercial projects.

The PE gas pipe products introduced this time strictly implement the national standard of GB 15558.1-2015 "Buried Polyethylene (PE) Pipeline System for Gas, Part 1: Pipes", and at the same time meet the relevant technical requirements for the transformation pipes in the "Implementation Plan for the Aging and Renewal of Urban Gas Pipelines in Hubei Province (2022-2025) ". All batches of products have passed the full performance test of the statutory testing agency before leaving the factory, and can provide complete product qualification certificates, batch test reports and other compliance materials to meet the compliance verification requirements of the whole process of bidding, construction supervision and completion acceptance of gas engineering projects, which can effectively ensure the engineering quality of pipeline network transformation projects.