The actual weight calculation of galvanized square tubing requires considering both the weight of the base material and the added weight of the galvanized layer. The specific steps are as follows:1. Base weight calculation (ungalvanized)General formula:Square tubing type: Square tubing is classified into square tubes and rectangular tubes according to its cross-sectional shape.Square cross-section: Weight (kg/m) = 4 × wall thickness (mm) × (side length (mm) - wall thickness (...