Square & Rectangular 

Square and rectangular tubes are hollow steel tubes with a square or rectangular cross-section. They are often used in construction, machinery manufacturing, and transportation. 

Here are some differences between square and rectangular tubes:

• Shape
  Square tubes have a square cross-section with clear corners, while rectangular tubes have a rectangular cross-section with all four corners at right angles. 

• Size
  Common square tube sizes are 2020mm-400400mm, while common rectangular tube sizes are 2030mm-200400mm. 

• Manufacturing process
  Square tubes are commonly made by cold drawing, cold rolling, and hot rolling, while rectangular tubes are generally made by welding or seamless manufacturing processes. 

• Application
  Rectangular pipes might be more suitable for carrying larger volumes of water, while a square pipe is ideal for structural support. 

Square and rectangular tubes are made from hot rolled metal coils that are hollowed out. They are cost-efficient and have a greater strength-to-weight ratio compared to other shaped metal products.