With the rapid development of the local economy, construction activities along the pipeline have increased, and various facilities have been built around the pipeline. For the safe operation of pipelines and surrounding facilities,gas steel pipeThe distance from various facilities shall meet the requirements of relevant national regulations.

Gas steel pipe can be seamless steel pipe, metal hose, spiral steel pipe, aluminum plastic composite pipe, gas pipe, etc. The gas pipe is made of PVC, which has the advantages of good sealing and pressure resistance, but this kind of product needs to be replaced once every 1 to 2 years. Natural gas metal hose generally refers to corrugated pipe, which has the advantages of corrosion resistance, high pressure resistance, good impact resistance, and not easy to leak.

Distance when gas steel pipe passes through other pipes

When the gas steel pipe intersects with other pipelines, the vertical fixed distance shall not be less than 0.5 meters, and when it is less than 0.5 meters, a strong insulating partition shall be installed between the two pipelines. The same insulation class shall be used for pipe sections extending more than 10 m on both sides of the intersection.

Distance when gas steel pipe intersects with power and communication cable

When the gas-fired steel pipe crosses the telecommunication cable, the vertical clear distance shall be at least 0.5 meters, and the appropriate insulation class shall be used for pipe sections extending more than 10 meters on both sides of the cross.

Distance of gas-fired steel pipe from overhead transmission line

When the buried pipeline is placed parallel to the overhead transmission line, the distance that needs to be controlled will be carried out as needed.

Generally speaking, the horizontal distance between various grounding devices and buried pipelines in the AC power system shall not be less than that specified in the following table.

Distance of gas steel pipe parallel to other pipelines

When the gas steel pipe is laid in parallel with other pipelines, the distance between the parallel pipelines in the non-restricted section shall meet the pipeline failure requirements that play a decisive role in not causing damage to other parallel pipelines, and shall not be less than 6m. For stonework sections, stonework sections built in different periods, and pipe sections with a spacing of more than 20 meters, blasting can be used to form trenches. The vertical vibration velocity of the vibration wave from blasting to trench reaching the existing pipeline shall not be greater than 10 cm/s; When 20 ≥ spacing> 10, non-blasting excavation shall be adopted (such as mechanical, manual and static blasting, etc.); When the spacing is 10 ≥ 6, mechanical or manual excavation shall be adopted; when the spacing is less than or equal to 6, manual excavation shall be adopted.

　　gas steel pipeRegulations on cross management with railway:

1. The intersection must be vertical or inclined at a large angle, and the intersection angle cannot be less than 30.

2. If safety measures are taken when walking conditions are limited, the walking angle may be less than 30 degrees.

3. The transverse angle must be greater than 45 degrees when passing through the existing subgrade of the top casing and top protection zone.

4. Natural gas pipelines and railways shall not use directional drilling that crosses the cross-sectional section of existing pipelines. When crossing the bridge, the horizontal net distance between the outside of the foundation and the outside of the pipeline shall be less than 5 meters, which does not affect the safety.