References
- Thormeyer , J. 1987 . ‘New and further developed structural steels from the Ernst Thalmann Eisenhuttenstadt Converter Steelworks.’ . Stahlberatung Freiberg , 14 (1) : 8 – 9 .
- NN . May 1978 . ‘Steel pipes for transporting flammable liquids and gases.’ May , DIN 17 172
- NN . ‘Fusion welded steel pipes.’ TGL 27 603/02.