Made in accordance with the applicable rules and laws no.46 of March 1990 and no.10of 9th January 1991, it is an ESENCOR CU DHP copper alloy pipe complying with European Standard EN 1057 -annealed in coils and phosphorous-deoxidised, with minimum 99,9% copper content and 0.015- 0.040% phosphorous, in compliance with UN1 5649171 series B, heavy, bearing the marking "ESENCOR D x thickness EN 1057 CU DHP 99.9% SLM I 00".

Covered with a low-density closed-cell polyethylene foam sheath of a thickness according to law no. 10/91, finished with an outer extruded film of blue or silver LDPE that is embossed to enhance mechanical protection and appearance. Non-toxic, odourless and free from chlorofluorocarbons (CFC).