The Difference Between Square Tube and Square Steel

What is the difference between square tube and square steel?

1. Different concepts

Square steel refers to a square material that is hot-rolled from a billet, or a square material drawn from a round steel through a cold-drawing process; the theoretical weight calculation formula of square steel: W (weight, kg) = F (cross-sectional area mm2)×L (length, m)×ρ (density, g/cm3)×1/1000

A square tube is a square tube shape. Many materials can form a square tube body. Most of the square tubes are made of steel tubes. After unpacking, flattening, crimping, welding to form a round tube, and then rolling from the round tube Shape into a square tube and cut to desired length.

2. They belong to different categories

Square steel, solid, bar stock. It is generally processed by hot rolling, and deep processing can be made into round steel, anchor bolts, etc. used to make tracks;

Square tube, hollow, belongs to pipe. Generally, there are rounded chamfers, and the quality is much lighter than that of square steel. Small diameters are generally cold rolled, and large diameters are generally welded together; they are used for structure.

3. Different uses

Square tube is an indispensable way of using steel, usually mainly used in steel structure, structural curtain wall, machinery manufacturing, building materials, shipbuilding airports, liquid transportation, etc. The square tube can be divided into seamless and welded joints with or without gaps. The seamless square tube is formed by extruding a round tube without a seam and can be used for liquid transmission. The seamed square tube can usually be welded by steel plates, and is usually used for steel structures.