DVS 2206-5-2011 Non-destructive tests on piping made of thermoplastics - Angle measurement on welded joints executed by means of sleeve welding with an incorporated heating element (HM) and heated tool sleeve welding (HD)
2011DVS 2206-5-2011 Non-destructive tests on piping made of thermoplastics - Angle measurement on welded joints executed by means of sleeve welding with an incorporated heating element (HM) and heated tool sleeve welding (HD)