51310 ⎘
General aspects of processes or apparatus for joining preformed parts; General aspects dealing with the joint area or with the area to be joined; Particular design of joint configurations particular design of the joint cross-sections; Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections; Tongue and groove joints characterised by the male part, i.e. the part comprising the tongue