DVS 2203-4-1997 Testing of welded joints of thermoplastics plates and tubes - Tensible creep test
DVS 2212-3-1994 Testing of Plastics Welders - Test Group III - Lining membranes in geotechnical and hydraulic engineering
DVS 2225-1-1991 "Joining of lining membranes - Made from polymeric materials (geomembranes) in geotechnical and hydraulic application - Welding, bonding by adhesives, vulcanising"
DVS 2225-2-1992 Joining of lining membranes - Made of polymer materials in geotechnical and hydraulic engineering - Site testing
DVS 2226-1-2000 "Testing of fused joints on liners of polymer materials - Testing procedure, requirements"
DVS 2226-2-1997 Testing of fused joints on liners of polymer materials - Lap shear test