DIN - DVS 2207-3
Welding of thermoplastics - Hot-gas string-bead welding and hot-gas welding with torch separate from filler rod of pipes, pipe components and sheets - Methods, requirements
|Publication Date:||1 April 2005|
|ICS Code (Welding processes):||25.160.10|
This technical code applies for hot-gas welding with torch separate from filler rod (WF) and hot-gas string-bead (WZ) welding of semi-finished thermoplastic products in tank, process equipment and pipeline manufacture. It describes the various methods, shows the method limitations and defines the quality assurance requirements. Hot gas welding is mainly used for welding material thicknesses between 2 and 10 mm. Larger thicknesses are generally hot-gas extrusion welded according to DVS 2207-4. Special applications, such as welding of waterproof sheeting, are described in DVS 2225-1 and 2225-4; welding of PE pipe jackets is described in DVS 2207-5.