Description: specific design within a type, generally characterized by its dimensions, a design may include several designs (variants), generally differing in mechanical details; Name: Design of sealing surface (connection spigot A2)
Description: a specific design within the context of a type, which is generally characterized by its dimensions. A construction can comprise several design (variants), which generally vary in terms of mechanical details; Name: Construction form of the seal surface, connection, muff A2
Description: subgroup of a construction type, whose differentiating features are generally the dimensions; Name: construction size