Repair of the heating main. Types and methods of installation of heating systems. Scheduled preventive repair of heating systems. Features of planning repair work. The main stages of repair.
Chimneys. Chimney classification: supporting structures, materials. What are the requirements for SNiP chimneys. The procedure for dismantling chimneys.
Sizes of polypropylene pipes. Advantages of polypropylene pipes. Classification of pipes made of propylene. Diameter and wall thickness. Table. Why reinforcement is needed.
Metal corrugation for wiring. Where metal corrugated tubes are used. Manufacture and benefits. Specifications. Installation of electrical wiring in a corrugated pipe.
Quick connection of plastic pipes. High temperature pipe joining method. The method of cold welding of plastic pipes. Connection of plastic pipes without welded joints.