Standard Gas Pipeline Installation in Laboratory Cylinder Rooms

Pipelines for conveying dry gases should be installed horizontally. Pipelines for conveying wet gases should have a slope of no less than 0.3% and incline towards the condensate collector.

2. Oxygen and other gas pipelines can be installed on the same framework, with a minimum spacing of 0.25 meters. Oxygen pipelines should be located above other gas pipelines, outside of the oxygen pipeline.

3. When laying pipes parallel to flammable gas pipelines, the distance between them must not be less than 0.50 meters. When crossing, the spacing should not be less than 0.25 meters. When laying in layers, the pipes should be positioned above. Indoor pipelines should not be laid in trenches or directly buried. Avoid passing through unsuitable rooms.

4. Gas pipelines should not be mounted on the same framework as the cables and wiring installed on-site.

5. Seamless steel pipes should be used for gases. Pipes for gases with a purity of 99% or higher should be made of stainless steel, copper, or seamless steel pipes.

6. The connection sections of pipelines and equipment should be made with metal pipes. For non-metallic flexible hoses, polytetrafluoroethylene (PTFE) tubes and polyvinyl chloride (PVC) tubes should be used instead of rubber hoses.

Valves and accessories materials: Copper materials shall not be used for gas pipelines. Other gas pipelines may be made of copper, carbon steel, malleable cast iron, and other materials.