20*20*1.5mm Square Section

is a hollow structural section with a square cross-section. Square tubes are commonly used in construction, manufacturing, and engineering applications due to their strength, versatility, and ease of fabrication. Here are some key features and uses of square tubes:

1. Cross-Sectional Shape: Square tubes have a square cross-section, characterized by four equal-length sides and 90-degree corners. The sides are parallel and of equal length, creating a uniform shape.