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SYSTEM GAS, Tube in Cu DHP 99.9% copper - EN 1057, insulated with sheath in closed cell, expanded polyethylene, produced with cutting-edge machinery and explicitly made for building gas transport plants in civil residential buildings and according to the prescriptions of standard UNI CIG 7129:2001 for under-floor tubes.

The internal air chamber, between the copper tube and the coating itself, allows gas to exit the building if there are any leaks from the feeding plant.

Silmet SYSTEM GAS is the optimal solution for building under-floor gas transport systems.

The core of the SILMET SYSTEM GAS is the ESENCOR copper tube, providing excellent protection against corrosion, the result of scientific studies and tests that guarantee a considerably lower level of residual carbon than is required by the manufacturing standards.

The Silmet SYSTEM GAS copper tube is supplied in 50-meter coils (25 meters with Ø 22 mm)  marked at intervals also indicating the relative meters.
                                                                                 
INSULATION DENSITY             : 130 kg/m³
THICKNESS OF THE INSULATING SHEATH : 6 mm
OPERATING TEMPERATURES       : -30 °C +95 °C
RESISTANCE TO FIRE             : Class 1 (self-extinguishing)
WRAPPING                     : coils individually wrapped with transparent film to give further protection
                                                                                 
 CHARACTERISTICS OF THE ESENCOR COPPER TUBE
                                                                                 
Alloy  Cu-DHP CW024A (Cu = 99.90% min. – P = 0.015 ÷ 0.040%)
 Physical state  Annealed
 Unit tensile strength  220 MPa/mm²
 Percentage elongation  40%
 Internal cleanliness  C max 0.20 mg/dm²
 Dimensions and tolerances  in compliance with EN 1057
 Internal surface roughness  RA 1/10  micron
 Linear thermal expansion coefficient  0.00168 mm/m °C
 Thermal conductivity at 20 °C  364 W/m k
                                                                                 
                                                                                 
TABLE OF DIMENSIONS OF THE SILMET SYSTEM GAS COPPER TUBE
                                                                                 
dimensions without
insulation		 diameter with
 insulation		 thickness of
insulating sheath		 bursting operating coil water content 
pressure pressure length  per meter
mm mm mm MPa MPa m l/m
12 X 1 24 6 37,40 9,35 50 0,0785
14 X 1 26 6 32,06 8,01 50 0,1131
15 X 1 27 6 29,92 7,48 50 0,1327
16 X 1 28 6 28,05 7,01 50 0,1539
18 X 1 30 6 24,93 6,23 50 0,2011
22 X 1,5 34 6 30,60 7,65 25 0,2835
                                                                                 
 PALETTISATION OF SILMET SYSTEM GAS COATED COILS