Bailian Plastic IndustryPEgas pipepeGas pipelineHDPE100gas pipepe80gas pipepe80Gas pipeline

Introduction to PE gas pipes

PEGas pipes made of polyethylene have many excellent properties and are used in the field of gas transportation. We will thoroughly solve the corrosion and joint leakage problems of steel pipes and cast iron pipes, thereby ensuring the safe operation of the gas pipeline network system.PESelection of gas pipesPEThe material is inert and can withstand the erosion of various chemical media. The friction coefficient of the pipe wall is low, the flow resistance is small, and the conveying capacity is strong. It adopts electric melting connection, and the interface strength is higher than that of the pipe body, with high toughnessPEThe elongation at break generally exceeds500%，PEGas pipes have excellent seismic performance and are resistant to slow crack growth(SCG)Rapid crack propagation(RCP)Ability, flexibility, and scratch resistance.PEGas pipes have strong adaptability to uneven settlement of pipe foundations, strong wear resistance, and can be used in various non excavation methods, which greatly facilitates construction and installation. The system cost is low, the maintenance cost is low, and the engineering cost can be significantly reduced.

Performance characteristics of PE gas pipes in Bailian Plastic Industry

1Corrosion resistant, polyethylene is an inert material that can withstand corrosion from various chemical media except for a few strong oxidants. It has no electrochemical corrosion and does not require an anti-corrosion layer.

2No leakage,PEGas pipelines mainly use fusion connections (hot melt connections or electric fusion connections), and compared with rubber ring joints or other mechanical joints, there is no risk of leakage caused by joint twisting.

3High resilience,PEGas pipe is a high toughness pipe material, with a fracture elongation rate generally exceeding500%It has a strong adaptability to uneven settlement of pipe foundations. It is also a type of pipeline with excellent seismic performance.

4Excellent flexibility, the flexibility of polyethylene makesPEGas pipes can be coiled. Used for non slotted construction,PEThe direction of gas pipelines can be easily changed according to the requirements of construction methods.

5Good scratch resistance. It can effectively resist the stress concentration caused by scratches on the material, greatly reducing the possibility of pipeline damage.

6Advanced electric melting pipe structure. The non exposed spiral heating wire ensures uniform heat conduction in the welding area and effectively prevents short circuits during pipe insertion. At the same time, it avoids the defects of aging and corrosion that are prone to occur with exposed heating wires. The inner wall of the pipe fittings is smooth and flat, making it easy to install.

7Good resistance to rapid crack propagation. Rapid cracking of pipelines refers to the occurrence of cracks in pipelines that can propagate hundreds of meters in length when they occur accidentally/The rapid increase in speed caused a major accident of pipeline damage of tens of meters or even thousands of kilometers in an instant. Rapid cracking of polyethylene gas pipes has not been found in actual use.

8Hot melt (or electric melt) connection is convenient and reliable, with easy construction and maintenance (gas can be continuously supplied during the process).

9Long service life, up to50Years or more.

10High strength, excellent resistance to environmental stress cracking, and good creep resistance.

11Smooth inner wall, high flow capacity, and gas flow rate can reach20m/sSave construction costs.

12Has good weather resistance (including UV resistance) and long-term thermal stability.

13Good wear resistance and abrasion resistance.

14Good resistance to low temperature impact and can be used in-20~40Safe use within the temperature range of ℃, winter construction is not affected.

15Fully suitable for traditional excavation construction methods and new non excavation technologies such as pipe jacking, directional drilling, lining, cracking, and sinking underwater.

16Polyethylene raw materials only contain carbon and hydrogen, which are harmless to the environment and environmentally friendly

PEGas pipe execution standard

PEGas pipe execution by countryGB15558.1-2003Standard.

PEGas pipe appearance: The black pipe should be co extruded with at least3Yellow bars should be evenly distributed along the circumference of the pipe.

PE100Performance requirements for gas pipeline materials

PE80Performance requirements for gas pipeline materials

PEApplication fields of gas pipes: