Thickness for Installation (only for reference) Environmental conditionsDimension of heat-preservation pipeSuitable thickness at temperature of piping(mm)TempRelative TempInchmm13°C7°C3°C-15°C26.5°C50%3/8-310-76101010153-576-127151515155-10127-2541515152029°C70%3/8-310-76101515203-576-127151515205-10127-2541515152532°C80%3/8-510-127151520205-10127-2542025253532°C85%3/8-11/210-382025304511/2-338-76203030503-576-127203035605-10127-25425304060>10>2543040457032°C90%1/8-1/23-13253235451/2-21/213-643035456021/2-564-127303545655-10127-25435455075>10>25435506075