There are many specifications of angle steel, which are usually expressed by side length (that is, the length of two equal sides of the angle steel) and thickness (that is, the thickness of the right-angled side of the angle steel). There is a wide range of common angle steel specifications. Here are some examples of common angle steel specifications, but please note that there may be many other specifications on the actual market:

Common angle steel specifications (side length × thickness, unit: mm)

• 20×20×3: Angle steel with side length 20mm and thickness 3mm.

• 25×25×3: Angle steel with side length 25mm and thickness 3mm.

• 30×30×3, 30×30×4, 30×30×5: Angle steel with side length 30mm and thickness 3mm, 4mm and 5mm respectively.

• 40×40×3, 40×40×4, 40×40×5, 40×40×6: Angle steel with side length 40mm and thickness 3mm, 4mm, 5mm and 6mm respectively.

• 50×50×3, 50×50×4, 50×50×5, 50×50×6, 50×50×7, 50×50×8: Angle steel with side length 50mm and thickness ranging from 3mm to 8mm .

• 60×60×4, 60×60×5, 60×60×6, 60×60×8, 60×60×10: Angle steel with side length 60mm and thickness ranging from 4mm to 10mm.

• 70×70×4, 70×70×5, 70×70×6, 70×70×8, 70×70×10: Angle steel with side length 70mm and thickness ranging from 4mm to 10mm.

• 80×80×5, 80×80×6, 80×80×7, 80×80×8, 80×80×10: Angle steel with side length of 80mm and thickness ranging from 5mm to 10mm.

• 90×90×6, 90×90×8, 90×90×10: Angle steel with side length 90mm and thickness ranging from 6mm to 10mm.

• 100×100×6, 100×100×8, 100×100×10, 100×100×12: Angle steel with side length 100mm and thickness ranging from 6mm to 12mm.

These are just some examples of angle steel specifications, there are actually many other side length and thickness combinations on the market. The selection of angle steel specifications depends on the specific application scenario, load-bearing requirements and cost considerations. When purchasing angle steel, it is recommended to choose the appropriate specifications according to actual needs and consult the supplier to obtain the latest price and product information.