1. If it is used for filling liquid, it is calculated according to the specific gravity (density) of the product, but there must be enough room for 10% of the cracks caused by the expansion of the product to prevent the iron packaging barrel from deforming and cracking when it falls during transportation .
2. If it is used to hold solids, you can request the iron packaging barrel manufacturer to provide the keyword ranking of iron packaging barrels of the same volume, and then convert the iron packaging barrel with the required weight. However, a space of 5% to 10% should also be reserved for the wrapping of plastic inner bags to prevent the iron packaging barrels from cracking due to falling deformation and flying lids during transportation.
3. If it is used for filling low-boiling products (usually below 60 ℃), it is necessary to fully consider that such products have vapor pressure at a certain temperature, and the liquid vapor pressure increases with increasing temperature. In addition, the filling temperature of the product and the maximum temperature during storage and transportation that the iron packaging drum may encounter after filling must also be taken into account. Generally, 55℃ is considered, and in some areas, the temperature difference between 60℃ is considered, causing product expansion, As a result, internal pressure is generated in the iron packaging drum. The sum of these two pressures cannot be greater than the allowable internal pressure within the iron packaging drum. Otherwise, the iron packaging barrel will burst and strain. Iron packaging drums are allowed to withstand pressure. For details, please refer to the export commodity inspection certificate, or consult with the barrel manufacturer.
4. If the temperature used for filling products is high (above 60℃), the minimum temperature of storage and transportation must be considered. The temperature difference causes negative pressure in the iron packaging drum, which may cause the iron packaging drum to collapse or touch the iron packaging drum. Deflated. Cool the product to room temperature before filling 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 normal temperature, then the cover Tighten.https://www.fhpails.com/