Square tubes are a tubular material with a square cross-section, widely used in construction structures, mechanical manufacturing, and assembly engineering. They feature high strength and good stability, suitable for various bearing and supporting structures such as frames and brackets.

Thick-walled square tubes refer to square-shaped tubing with relatively large cross-sections and thicker walls. Due to their high compressive strength, these tubes are commonly used in structures that bear heavy loads, such as bridges and machinery.

Right angle rectangular tube refers to a tube where all four angles are 90 degrees. This design makes the right angle rectangular tube easier to connect with other structural components, commonly used in constructing structures with clear corner parts, such as window and door frames, pergolas, etc.