This International Standard specifies the properties of bonded preformed man-made mineral fibre pipe insulation. lt also gives test methods. NOTES 1 For use at temperatures below ambient, attention is drawn to the need for an adequate water vapour retarder, either factory- or siteapplied; this need is not covered by this International Standard. 2 No tests for compressive strength have been included since end results are achieved in Service by the insulation System including the outer covering.