Standard for Laboratory Gas Cylinder Room Pipeline Installation

Piping for conveying dry gases should be installed horizontally. Piping for conveying wet gases must have a slope of not less than 0.3% and incline towards the condensate collector.

2. Oxygen pipelines and other gas pipelines can be mounted on the same frame, with a spacing of not less than 0.25 meters. Oxygen pipelines should be located above other gas pipelines, excluding oxygen pipelines.

3. When laying pipelines parallel to flammable gas pipelines, the distance between them must be no less than 0.50 meters. When crossing, the distance should not be less than 0.25 meters. When laying in layers, the pipelines should be placed above. Indoor pipelines should not be laid in trenches or directly buried. Avoid passing through unsuitable rooms.

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

5. Gases should be conveyed through seamless steel pipes. Pipes for gases with purity of 99% or higher should be made of stainless steel, copper, or seamless steel pipes.

6. The connection parts 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.

7. Valve and附件 materials: Copper materials must not be used for gas pipelines. Other gas pipelines can be made of copper, carbon steel, malleable cast iron, and other materials.