Views: 0 Author: SGA Garnet Publish Time: 2026-11-12 Origin: SEPPE Tech
With the onset of winter, low temperatures and frozen river channels have a seasonal impact on the extraction and water-washing processes of natural river garnet. This production cycle is explained in our article on the natural river garnet mining cycle. To ensure a stable supply for winter and subsequent orders, we begin expanding our inventory in October and prepare stock in advance.
SEPPE SGA Garnet is a natural mineral with high hardness and chemical stability. Normal low temperatures do not alter its hardness, specific gravity or mineral composition.
A critical issue to consider for winter exports is container condensation. One might assume that low winter temperatures make cargo less susceptible to moisture, but in reality, this is not the case.
During ocean transit, containers experience temperature fluctuations, both between day and night and across different climatic zones.
If the packaging or wooden pallets contain moisture at the time of loading, temperature changes during transit can cool the container roof and walls until water vapor in the air reaches its dew point. Condensation then forms droplets that may fall onto the packaging. Once the packaging becomes damp, moisture may penetrate the product. The UNECE CTU Code guidance on condensation explains this mechanism. The resulting effect is commonly known as “container rain.”
SEPPE checks the dryness of the garnet before packaging to ensure that the product meets shipment requirements. For 80 mesh waterjet cutting garnet, which requires good flowability, we place particular emphasis on moisture control. Before loading containers in winter, SEPPE also checks that each container interior is dry and clean and that there is no damage or unusual odor. These checks help reduce the risk of moisture exposure during transit.
Based on our experience, ordinary packaging materials may become less flexible and less impact-resistant at low temperatures. We therefore pay closer attention to packaging material quality and reduce the risk of damage during handling, lifting and stacking.
Before unloading, inspect the overall condition of the shipping container and the cargo. Record any packaging irregularities and take photographs for reference.
Pay close attention to packaging integrity. Check whether the lifting straps and seams of bulk bags remain intact and look for any signs of surface damage or moisture. After opening the packaging and taking a sample, examine the product for moisture and particle clumping.
Laboratory testing can then be carried out according to the purchasing specification and requirements, including moisture content, particle size distribution and conductivity. If necessary, confirm that the product meets the required performance under the actual equipment and operating conditions.
