Glass apparatuses are assembled from individual parts which can be mutually connected by dismountable joints. The assortment of these standard kit elements includes cylinders, vessels and special parts which can be assembled into an apparatus suitable for majority of technological processes. Basic parts are made in nominal diameters DN 15, 25, 40, 50, 80, 100, 150, 200, 300, 400, and 600. Reinforced connecting endings are made in types PZ (flat ground joint), KZ (spherical ground joint), and RK (conical ground joint) according to standards compiled in compliance with international standards ISO. Practical application of glass parts is limited by packing, connecting and accessory parts used.