There are several types of materials approved for gas work. The codes for the local jurisdiction should always be checked but in general
- steel pipes
- copper pipes
- yellow brass pipe
- ductile iron
- aluminum pipe
- PVC pipes
- PE pipes
may be used.
Steel pipes can be used above ground as long as corrosion due to the environment and the conveying gas is of no problem. Steel pipes and copper pipes are the most common materials used inside buildings.
Copper pipes used in gas systems should be of type L or K and approved for gas.
Yellow Brass Pipes
Yellow brass pipes may be approved for inside installations.
Aluminum pipes should not be used in the ground. Aluminum is not approved in all jurisdictions.
Ductile iron pipes may be approved in some jurisdiction for underground work.
PVC - Polyvinyl Chloride - pipes may be used in pipelines buried outside a building.
PE - Polyethylene - pipes may be used in pipelines buried outside a building.
Flexible connectors are used to connect appliances to gas sources. Flexible connectors must be approved.
Air, LNG, LPG and other common gas properties, pipeline capacities, sizing of relief valves.
The working pressure and temperature limits of ASME Code B31.9 - Building Services Piping.
Standard sizes specification for seamless red brass pipes.
Dimensions of threaded ductile-iron pipe according AWWA C115.
Dimensions of ductile-iron pipes according AWWA C151/A.21.51.
Carrying capacity of house gas pipes - in imperial and metric units.
Dimmensions of PE pipes for gaseous supply according ISO 4437.
Resistance and pressure loss in liquid LPG pipes.
Calculate capacities and dimensions of natural gas pipe lines.
Sizing low pressure natural gas pipe lines - Imperial units.
Sizing low pressure natural gas pipe lines - Metric units.
Sizing low pressure propane gas pipe lines - Metric units.