VEVOR Jerry Fuel Can, 5.3 Gallon / 20 L Portable Jerry Gas Can with Flexible Spout System, Rustproof ＆ Heat-resistant Steel Fuel Tank for Cars Trucks Equipment, 2PCS Green

It is 3 days.

The product has a one-year warranty, and free accessory replacement and technical consultation are provided within one year. Please refer to the link below for specific details. https://www.vevor.com/pages/return-policy

They are welded by electric welding.

Cannot hold drinking water, it has a coating inside, and this is for fuel, not food grade metal.

The steel is 0.8mm thick.