FIELD: sanitary technical equipment. SUBSTANCE: proposed invention can be used in sound insulation and in shaped fastening parts employed in canalization systems. In agreement with invention sound insulation layer of enamel with closed pores and smooth surface is deposited on to internal surface of shaped part or tube made of steel or cast iron. Pores have different sizes, predominantly that each straight line drawn across enamel layer passes through three pores as minimum. EFFECT: improved operational characteristics of shaped parts or tubes. 7 cl, 6 dwg
