It depends on load, column height, and position in the frame. For lighter loads, 3-5 mm is common, while heavy loads often need 6-10 mm or more. Always match the engineer's calculation and material certificate before ordering to ensure structural safety.
Carbon steel can be affected by heat, humidity, and salt air, especially near Jeddah, Khobar, and other coastal areas. You can reduce rust by choosing galvanized tubes or requesting an industrial paint coating. Check the surface for cracks, blisters, or rough spots before installation.
Circular tubes give more uniform resistance in all directions and are often used for columns, joints, and curved designs. Square tubes are easier to connect to beams, slabs, and floors. The best choice depends on the structural design, connection method, bending requirements, and project budget.
The price changes based on diameter, wall thickness, length, steel grade, order quantity, and project location in Riyadh, Dammam, Jeddah, or other cities. For a clearer comparison, request an official Matkel quote that includes tax, delivery, lead time, and any available installation support.
Yes. Matkel can support custom sizes or cut-to-length orders for circular steel tubes, depending on material availability and the required diameter and thickness. It is best to send the drawing, size schedule, or structural notes before manufacturing or dispatch to the project site.