Cu DHP (Cu: 99,9% min. P: 0,015 ÷ 0,040%) according to EN 1412
Dimensions and tolerances, according to EN 12735-1 and EN 13348
Physical status annealed (R220)
Unit break load: R. min. ≥220 MPa (N/mm²)
Percentage elongation: A5 min. > 40%
Physical status hard (R290)
Unit break load: R. min. ≥290 MPa (N/mm²)
Percentage elongation: A5 min. > 3% .
With reference to EN 12735-1, TECTUBE® fully meet the requirements in the air conditioning and refrigeration (ACR) sector for refrigerant gas tubing in industry and laboratories.
Particularly suitable for large-scale installations, it meets the technical specifications required by European legislation on packaging and transport of refrigerants (R32, R410, R407C, …).
TECTUBE® presents internal surfaces that are bright, clean and dry, key features for assuring the efficient performance of the entire system. The special production process guarantees a value of soluble residues on the inner surface of less than 0,38 mg/dm², in full compliance with EN 12735-1 and a lubricant residue less than 0,20 mg/dm² as indicated by standard EN 13348. Such levels of cleanliness are assured by the specific production techniques adopted and also by the termination-sealing of each tube by appropriate stoppers on completion of the manufacturing cycle.
With reference to EN 13348 “..Seamless, round copper tubes for medical gases…”, TECTUBE® is the specific solution for a sector in which, given the high level of quality required and the particular uses in hospital facilities, a high degree of excellence in quality and reliability is mandatory. In fact, medical gases have a direct impact on human health and, therefore, their purity must be safeguarded throughout all transport stages in order to protect the safety of treated patients.
TECTUBE® is subject to particularly restrictive chemical, mechanical, dimensional and safety characteristics and is suitable for vacuum systems and the distribution of medical gases and fluids (Oxygen, nitrous oxide, nitrogen, helium, carbon dioxide, xenon, medical air, air for feeding surgical instruments, anaesthetic gases and vapours) at pressure levels up to 2000 kPa.
In this specific area, the applicable joining method for this tubing is welding or brazing as recommended by standard UNI ISO 7396-1, which specifies “the joining methods used must make it possible to maintain the mechanical characteristics of the joint up to an ambient temperature of 600°C”. During brazing or welding operations, the inside of the tubes must be purged with a protective gas (such as nitrogen) with due care that the cadmium content of brazing filler metals must not exceed 0,025%.