How thick is a 2 inch square pipe?

MS 2 inch Square pipe,thickness range is 2-6 mm in China.
In China, mild steel (MS) 2-inch square pipes typically have a wall thickness range of 2 mm to 6 mm, depending on the application:

2–3 mm: Light-duty structural or furniture tubing, easier to bend or fabricate.

3–4 mm: Medium-duty for general construction, frames, and machinery.

4–6 mm: Heavy-duty for structural support, industrial frames, or load-bearing applications.

The exact thickness is chosen based on strength requirements, load, and safety factors, and it directly affects the pipe’s weight per meter and cost.
In China, 2-inch mild steel (MS) square pipes typically have a wall thickness ranging from 2 mm to 6 mm. Light-duty pipes of 2–3 mm are used for furniture, decorative structures, and light construction, while medium-duty 3–4 mm pipes are suitable for general construction and industrial frames. Heavy-duty 4–6 mm pipes provide strong structural support and are ideal for load-bearing or high-stress applications. The thickness affects weight, cost, and strength, and mild steel pipes are easy to weld, cut, and galvanize for corrosion resistance.