DIN 16966-8
DIN 16966-8 Glass fibre reinforced polyester resin (UP-GF) pipe fittings and joints; Laminated joints; Dimensions
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 07/01/1982
standard by Deutsches Institut Fur Normung E.V. (German National Standard), 07/01/1982