Copper tubes for Air Conditioning and Refrigeration (ACR) systems are specially designed and manufactured copper tubing used in the HVAC (Heating, Ventilation, and Air Conditioning) and refrigeration industry. Copper ACR tubes come in various sizes and wall thicknesses to suit different applications.The below dimensional chart describes the specified copper pipe sizes in mm to be used in conformance with BS EN 13348 Medical Grade (Degreased and Carbon Free). Along with the mentioned standard copper tube sizes in mm, some brands like C-Flo, Mueller and Yorkshire also produce Copper Pipes with higher thicknesses for more durability. https://copperfitting.in/copper-pipe-weight-dimensions-chart-in-mm-kg-pdf-online/