What is Degreased Copper Tube?
Specially degreased copper tubing, to BS EN13348 is cleaned to the requirements of Hospital Technical Memorandum HTM02 and the C11 standard (published by the Department of Health). Such tubing, which is eminently suitable for use on medical gas (including breathable air) and oxygen lines, comprises half-hard temper, phosphorous de-oxidised, non-arsenical copper, complying with the chemical requirements of BS EN 1976, Cu-DHP, CR024A (supersedes BS6017 Cu-DHP). When jointing tubing with brazing alloys, the temperatures involved in hard soldering convert the metal, in the heat-affected zone, from the half-hard to the soft condition. This effectively reduces the maximum safe working pressure by approximately one-third. Precautions should also be taken during jointing operations to prevent the formation of oxide along the lines described in HTM02. Copper tubing is suitable for most gases with a few exceptions. Where there is any doubt regarding the type of material or internal finish requir
