40x160 square tube, 25x150 square tube, 50x110 square tubeThe following is an introduction to the three types of rectangular tubes: - **40×160 Rectangular Tube**: - **Size Features**: With a width of 40mm and a height of 160mm, this is a relatively special size specification. Its larger cross-sectional dimensions provide high bending and load-bearing capabilities, while its relatively narrow width may offer advantages in certain installation spaces or structural designs. - **Applications**: In the construction industry, it can be used in the frame structures of large buildings, such as part of the pillars or beams, to bear significant building weight; in the industrial field, it can be used to manufacture structural components of large equipment, such as the support arms of cranes, frames of large conveying equipment, etc.; in some special decorative projects, it can serve as a decorative structural element due to its unique size and shape, adding depth and design sense to the space. - **25×150 Rectangular Tube**: - **Size Features**: With a width of 25mm and a height of 150mm, it features a narrow and tall cross-sectional shape. Such dimensions make it suitable for situations that require space utilization and certain load-bearing capabilities, such as in small steel structure buildings, or as supporting or connecting components in certain equipment or devices. - **Applications**: Commonly used in the skeletal structures of roofs or walls in small buildings, providing support while saving space; in some interior decorations, it can be used as a unique decorative line, such as outlining the edges of background walls; it may also be used in small furniture or home products, such as making bookshelves or display racks with special shapes. - **50×110 Rectangular Tube**: - **Size Features**: With a width of 50mm and a height of 110mm, this is a moderately common medium-sized rectangular tube specification. Its cross-sectional dimensions balance load-bearing capabilities with relatively flexible installation spaces. - **Applications**: In construction projects

Frames suitable for constructing temporary work platforms or guardrails; commonly used in the mechanical manufacturing industry for making shells, brackets, and other components of various equipment; serve as part of the shelving system in logistics and warehousing, supporting the weight of goods; also utilized in municipal engineering projects such as road guardrails and streetlight support structures.