NF EN ISO 3821

Le présent document spécifie les exigences pour les tuyaux souples en caoutchouc, y compris les tuyaux jumelés et les tuyaux pour gaz combustibles avec flux, pour le soudage, le coupage et les techniques connexes.

<p>This document specifies requirements for rubber hoses (including twin hoses) for welding, cutting and allied processes.</p> <p>This document specifies requirements for rubber hoses for normal duty of 2 MPa (20 bar) and light duty [limited to hoses for maximum working pressure of 1 MPa (10 bar) and with bore up to and including 6,3 mm].</p> <p>This document applies to hoses operated at temperatures −20 °C to +60 °C and used in:</p> <p>— gas welding and cutting;</p> <p>— arc welding under the protection of an inert or active gas;</p> <p>— processes allied to welding and cutting, in particular, heating, brazing, and metallization.</p> <p>This document does not specify requirements for hose assemblies; these are detailed in ISO 8207.</p> <p>This document applies neither to thermoplastics hoses nor to hoses used for high pressure [&gt;0,15 MPa (&gt;1,5 bar)] acetylene.</p>