Because iron buckets can conduct electricity.
Gasoline is a highly insulating substance and is flammable and explosive. During transportation, the gasoline barrel is constantly shaken, causing collision and friction between gasoline and the inner wall of the barrel, which will generate a large amount of static electricity. Iron is a good conductor of electricity. Therefore, the iron barrel can make the charge generated in the barrel run along the body Into the underground.
Gasoline storage specifications:
1. Gasoline drums must be tightly sealed. Do not use plastic products. It is easy to generate static electricity and is very dangerous. Just put it in a cool place. It is best not to store too much gasoline. It will also deteriorate when it is used for a long time. Keeping the gasoline fresh is good for the engine.
2. Make sure that the oil drum has its own suitable cover and is sealed well.
3. Make sure that the drum and its contents are compatible. For example, don't put acid in ordinary iron buckets or solvents in plastic buckets.
4. Accurately identify waste oil drums.https://www.fhpails.com/