Black steel (boiler tube)
DIN EN 10220 Reihe 2DIN EN 10220 Reihe 3
Black steel pipe (boiler tube) is ungalvanized steel pipe mainly used in heating systems and for oil lines. It is manufactured according to DIN EN 10220 series 2+3 and is not suitable for drinking water.
- High temperature resistance
- Suitable for closed systems
- Not corrosion-protected
- Pressure-resistant
- Magnetic
- Dark gray to black surface
- Magnetic
- Often without threaded ends
- Typical outer diameters: 20–108 mm
- Heating systems
- Oil filling lines
- Steam lines
- Industrial plants