Skyrise Low Noise System Home » Our Products » Skyrise Low Noise System Download Catalogues Dimensions of Skyrise Pipes Size Tolerance on outside diameter Wall thickness Minimum Maximum 50 + 0.3 3.00 3.20 75 + 0.3 3.50 3.80 110 + 0.4 3.80 4.20 160 + 0.5 4.50 5.00 200 + 0.6 4.60 5.20