1. If it is used for filling liquid, it is calculated according to the specific gravity (density) of the product, but 10% of the space required for the expansion and cracking of the product must be reserved to prevent the iron packaging barrel from deforming and cracking when it is dropped during transportation .
2. If it is used to contain solids, you can ask the iron packaging barrel manufacturer to provide a keyword ranking for trial packaging of iron packaging barrels of the same volume, and then convert the required volume of iron packaging barrels to the required weight. However, 5% to 10% of the space should be reserved for wrapping the plastic inner bag to prevent the iron packaging barrel from cracking due to falling deformation and flying lid during transportation.
3. If it is used for filling products with low boiling points (usually below 60°C), full consideration should be given to the vapor pressure of such products at a certain temperature, and the liquid vapor pressure increases with temperature. In addition, it is also necessary to consider the product filling temperature and the iron packaging barrels may encounter higher temperatures during storage and transportation after filling. As usual, 55℃ should be considered. In some areas, the temperature difference between 60℃ should be considered, causing product expansion. , Cause internal pressure in the iron packaging barrel, the sum of these two pressures cannot be greater than the allowable internal pressure pressure in the iron packaging barrel. Otherwise, the iron packaging barrel will burst and be strained. Iron drums are allowed to bear pressure. Please refer to the export commodity inspection certificate for details or consult the drum manufacturer.
4. If the temperature of the product used for filling is higher (above 60℃), the lower temperature for storage and transportation should be considered. The temperature difference causes negative pressure in the iron packaging barrel, which may cause the iron packaging barrel to collapse or touch the iron packaging barrel. It's sunken. Before filling, cool the product to room temperature as much as possible before filling. If the product cannot be cooled and needs to be filled, the filled iron packaging barrel cannot be tightened immediately. When the temperature of the goods in the barrel drops to room temperature, the lid should be replaced. Tighten.