Here in the US when specifying copper tubing for Air Conditioning and Refrigeration (ACR) use we often require that the tubing conform to:
ASTM B280 - 08 Standard Specification for Seamless Copper Tube for Air Conditioning and Refrigeration Field Service.
This standard defines the material composition, dimensions, cleanliness and other pertinent characteristics.
The dimensions are all for nominal inch size tubing.
So far I'm having no luck finding an equivalent standard for nominal Metric tubing size.
Can anyone point me in the right direction?
ASTM B280 - 08 Standard Specification for Seamless Copper Tube for Air Conditioning and Refrigeration Field Service.
This standard defines the material composition, dimensions, cleanliness and other pertinent characteristics.
The dimensions are all for nominal inch size tubing.
So far I'm having no luck finding an equivalent standard for nominal Metric tubing size.
Can anyone point me in the right direction?