DVS 2203-1-1986 Testing of welded joints of thermoplastics; test methods; requirements
DVS 2205-3-1975 "Calculation of containers and apparatuses of thermoplastics, welded joints"
DVS 2205-5 Beiblatt-1984 "Calculation of containers and apparatuses of thermoplastics; rectangular containers, structural details"
DVS 2212-1-1993 history
2006DVS 2212-1-2006 "Qualification testing of plastics welders - Qualification test groups I and II - Hot gas welding with the torch separate from the filler rod (WF), high-speed hot gas welding (WZ), heated toolbutt welding (HS), sleeve welding with an incorporated electric
2005DVS 2212-1-2005 Plastic Welding Machine Test Test Group I and II
1994DVS 2212-1-1994 "Examination of plastic welders examination - Group I - Hot gas welding with torch separate from filler rod (WF), hot gas string-bead welding (WZ), heated tool butt welding (HS)"
1993DVS 2212-1-1993 Plastic welder test; test group I; hot gas technology welding (WF), hot gas drawing welding (WZ), heating element butt welding (HS)
1982DVS 2212-1-1982 Examination of plastics welders; examination group I