BALPEX multilayer pipes can be supplied with external pre-insulation up to Ø 32 mm. for all those uses where it is necessary to minimize winter and summer heat loss. For heating, plumbing and sanitary systems and for the transport of chilled water, the thicknesses of the insulating coating applied to BALPEX pipes comply with what is indicated in Table 1 of Annex B of Presidential Decree 412/93 (in implementation of article 4 paragraph 4 of Law 10/91) with reference to “pipes within structures that do not face either outside or on unheated rooms”. In order to avoid condensation phenomena it is however necessary to consult the thermo-technical designer for the calculation of the suitable thicknesses based on the specific laying and operating conditions.