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EsencoRICEMedicaLLevel Wound CoilCoated
 

 

QUALITY: THE SILMET LIFE STYLE

All Silmet Lewel Wound Coils for industrial use and ACRs are produced in compliance with all international standards and also with the specific requirements of customers.
Particular attention is paid to dimensional uniformity, uniformity of the physical state, the absence of faults and internal cleanliness.
The length, approximate weight, number of faults present, dimensions and all references aimed at guaranteeing the traceability of the product with regard to laboratory tests carried out in compliance with stringent sampling and control plans implemented during production, are highlighted for each individual coil.
The internal cleanliness of the tubes is considerably above the limit of 0.038 g/m².

The Silmet Quality System is certified in compliance with standard ISO 9001:2000 and the Quality Service is assigned to highly qualified, constantly updated personnel with functions that are independent from production departments; they use the most sophisticated laboratory and production control equipment.
All phases of the production process, starting from acceptance of raw materials, are subject to very severe sampling and control plans aimed at guaranteeing that the end products achieve very high quality standards.

Silmet S.p.A. has been manufacturing copper tubes for usage in water and gas tubes in sanitary and heating applications and in the industrial sectors since 1974. Over recent years, due to its excellent conductivity, machinability, resistance to corrosion and user-friendliness, the copper tube has made a name for itself as the ideal product for air-conditioning/refrigeration equipment and for the heating industry.
Silmet has always been aware of the needs of the market and is constantly up-to-date technologically.
With all these things in mind, in order to help its customers with the growing trend in production automation and to be able to satisfy their requirements, Silmet is equipped with cutting-edge Level Wound Coils production plants.
                                                                                   
 COPPER CHEMICAL/PHYSICAL/TECHNOLOGICAL PROPERTIES
                                                                                   
 Symbol  Cu
 Atomic number  29
 Atomic weight  2.6625
 Crystalline structure  cubic with faces centred with the side of the cube 3.6078 Å
 smelting temperature  1083° C
 Boiling temperature  2595° C
 Volumic mass (density) at 20° C  8.94 g/cm³
 Coefficient of linear thermal expansion at 20° C  0.0000165 · Kˉ¹
 Solidification shrinkage  4.92%
 Specific heat at 20° C  385 J/kg K
Latent smelting heat  205 kj/kg
 Thermal conductivity at 20° C  391 W/m K
 Electric resistivity at 20° C annealed physical state  0.017241 Ω mm²/m
 Electric resistivity temperature coefficient at 20° C  0.00393 · Kˉ¹
 Alloy for the production of LWC  Cu-DHP CW024A (Cu = 99.90% min. - P = 0.015 ÷ 0.040%)
                                                                                   
                                                                                   
 MECHANICAL CHARACTERISTICS OF COPPER AND LOW ALLOY COPPER ALLOYS - EN 12449
                                                                                   
designation thickness resistance to yield at elongation hardness
material    tensile strength  0.2%    
state t Rm Rp0,2 A HV HB
  mm N/mm² N/mm² %    
  max.   min. max. min. min. max. min. max
R200 20 200 - 110 40 - - - -
H040 20 - - - - 40 65 35 60
                                                                                   
                                                                                   
 TOLERANCES ON EXTERNAL DIAMETER IN COMPLIANCE WITH EN 12449 - TUBES IN LWC
                                                                                   
external nominal diameter