What is BS EN 12735‑1 about?
BS EN 12735‑1 is the first part of a series of documents on copper and copper alloys. BS EN 12735‑1 specifies the requirements, sampling, test methods, and conditions of delivery for seamless round copper and copper alloy tubes used for refrigeration and air-conditioning piping systems (i.e. piping, connections and repairs).
BS EN 12735‑1 applies to tubes with an outside diameter from 3 mm up to and including 219 mm. Tubes made of the copper-grade Cu-DHP are supplied in straight lengths in the material conditions hard or half-hard, or coils in the annealed material condition.
Tubes made of the alloy CuFe2P are supplied in straight length in the material conditions hard or annealed.
Who is BS EN 12735‑1 for?
BS EN 12735‑1 on copper and copper alloy tubes is relevant to:
- Manufacturers of copper and copper alloy tubes
- Manufacturers of refrigerators and air conditioner
Why should you use BS EN 12735‑1?
During the cooling process, pipes come in contact with air which causes oxidation within these pipes. Copper can better handle oxidation and corrosion for longer periods ultimately giving air conditioners and refrigerators a longer lifespan
BS EN 12735‑1 provides information on the material condition, mechanical properties, surface quality, test methods, inspection documentation, packaging, marking, and form of delivery.
As the user of BS EN 12735‑1, you can be ensured of the quality of the corrosion-resistant Seamless, round tubes for air conditioning and refrigeration that minimize the risk of leakage, corrosion, and contamination. As a result, BS EN 12735‑1 takes into account the safety and protection of the product end-user while also prolonging the service life of the copper and copper alloy seamless tubes. Moreover, guidance regarding the manufacturing process, material selection, inspection is provided by BS EN 12735‑1.
What’s changed since the last update?
BS EN 12735‑1:2020 supersedes BS EN 12735‑1:2016, which is withdrawn
In comparison with EN 12735-1:2016, the following changes were made:
- Modification of the maximum outside diameter for Cu-DHP, R220, in Table 3
- Removal of Note 3 from Table 3 on Mechanical properties
- Requirements added in 10.2 concerning marking of tube coverings
- Deletion of the last sentence in Freedom from defects test, Update of Normative References
- Several editorial amendments