| Copper pipes conforming to DIN 1786 and DIN 1754 are used for small and medium pipes as process control lines. The seam-less pipes are available in hard, semi-hard and soft qualities.
- Sizes
soft 6 - 22 mm
semi-hard 6 - 54 mm
hard 54 - 131 mm
- Maximum operating pressure 16 - 140 barop
- Maximum operating temperature 100°C
Advantages
Copper pipes are available in long sections, they can be bent if the diameter is small, and they are easy to work with. It is therefore possible to use one piece for longer sections of the network. This reduces the number of joints. The occurrence of leaks is also lower.
Copper pipes are corrosion-proof and pressure loss is low due to the smooth surface of the inside walls.
Disadvantages
An experienced fitter is needed to install copper pipes since fittings are normally soldered to them. The joints can not be disconnected.
The material is expensive, but there are many shaped parts to choose from because copper pipes are also used in the sanitary area.
If the lines are longer, the expansion of copper due to heat must be taken into account. The coefficient of length expansion for copper is greater than that for steel.
If the compressed air contains moisture, particles of copper may form local galvanic elements in subsequent steel piping, leading to pitting. Copper vitriol can also arise. |