<p><b>Welded decoration tubes</b></p><p>acc. to. EN 10296-2/ EN ISO 1127 old DIN 17455/ DIN 2463)</p><p>in manufacturing lengths of 6 m</p><br><br><p><b>Tube microsections</b></p><p>Tube microsections are not stipulated by any standards. It is customary to state the grain sizes,</p><p>e.g. grain size 240 or 320, etc. Only roughness can be measured using a roughness tester.</p><p>However, visual variations from plant to plant are possible and can sometimes even be detected</p><p>within the same batch. Severe deviations between the longitudinal sections on sheet metals and</p><p>square tubes. Furthermore, radial sections on round tubes are possible.</p><br><p>Imperfections in the ground surface are only considered to be flaws if they can be seen by the</p><p>naked eye at a distance of one metre and greater.</p><br><table class="techDescTable"><thead><tr><th><b>Grain size </b></th><th><b>Roughness depth (Ra)</b></th></tr> </thead><tbody><tr class="Even"><td>180</td><td>3,0 to 2,0 my</td></tr><tr class="UnEven"><td>240</td><td>1,5t o 1,0 my</td></tr><tr class="Even"><td>320</td><td>0,8 to0,5 my</td></tr><tr class="UnEven"><td>400</td><td>0,4 to 0,3 my</td></tr><tr class="Even"><td>600</td><td>0,25 to 0,2 my</td></tr><tr class="UnEven"><td>High-gloss polished</td><td>0,2 to 0,08 my</td></tr></tbody></table>