The galvanized square tube is a hollow square section steel tube with a square cross-section shape made of hot-rolled or cold-rolled galvanized strip steel or galvanized coil blanks after the cold bending forming and then high-frequency welding Or the galvanized square moment tube made of cold-formed hollow steel tubes and then hot dip galvanized.

The density of carbon steel is slightly higher than that of ferritic and martensitic stainless steel, but it is lower for austenitic stainless steel, so the difference between carbon steel and stainless steel is different.

PPGI stands for pre-painted galvanized iron sheets/coils which are made by coating galvanized steel sheets with several layers of paint & coatings under controlled conditions in a continuous coil coating line (CCL). These products have high durability as well as chemical resistance properties making them ideal for many industrial applications like roofing sheets/Walling/Cladding materials for the construction industry etc.