7 Metal working machines, namely drilling, milling, turning and pipe bending machines; mechanical construction equipment and devices for renovating, demolishing and replacing underground conduits, namely rams, pipe drive presses, hydraulic stations, pull rods, pipeline guides, pipe catches, pull heads, stretcher devices; parts for the aforementioned goods, namely machine bodies, pistons, piston sliding and sealing rings, joint pipes, socket/spigot pipes, connection pipes, traction cables of wire and traction cable connection pieces, coupling tubing with quick coupling outlets, hose nuts and dust caps; fittings for the aforementioned goods, namely expansion devices, clamping carriages, mechanical winches and winch cables as well as guide chains; electronically controlled pipe working machines with programmable and storable bending functions; replacement parts for these goods, namely bending heads, bending tools, sliding and clamping pieces, bending rollers; power operated mechanical construction equipment, namely rams, earth moving equipment, impact drilling equipment, controllable dry drilling and wet drilling equipment, controllable earth rockets; parts and accessories of the aforementioned goods, namely drill heads, drilling carriages, pipe strings, pull and push pipes, drilling lances, turning mills