Literally, kilogram is a unit of weight, while liter is a unit of volume, which cannot be converted. However, if it is the same substance and its density is known in the same geographical situation, it can be converted into water, for example, the density of water is 1000 kilograms per cubic meter, that is, 1 kilogram per liter. The mass of 1000 liters of water=density × volume=1 × 1000=1000 kg (kg here is kg), that is, 1 liter of water=1 kg of water
So if we take the galvanized square tube as an example, 30 * 2L galvanized square tube is equal to 60kg
30 * 2 galvanized square tube meter weight
For example, the weight per meter of galvanized square tube of 30x30x2.5mm can be calculated as 4x2.2x (30-2.5) x7.85=2158.75g, that is, about 2.16kg.
