References
- Lindner , H . 1978 . ‘Creep rupture testing of pipes and moulded pipe components.’ . Kunststoffe (Munich) , 68 ( 4 ) : 244 – 247 .
- Hesse , J . ‘Long-term tests on PE welded joints subject to complex loadings.’ . DVS-Berichte , 84 58 – 61 .
- ‘Testing of semi-finished thermoplastic components and the quality of the welded joints.’ DVS information sheet −2203
- ‘Testing methods for plastic welded joints.’ ZIS-Guidelines R 4.10.79
- Stäbler , B . 1986 . ZIS 14–00–A hot tool welding device for welding moulded components and mitre welding.’ . ZIS-Mitteilungen (Halle) , 28 ( 7 ) : 749 – 754 .