Which angle iron sizes are best suited for structural applications? Answer: For structural applications, larger sizes such as 75mm x 75mm x 6mm, 100mm x 100mm x 10mm, and 150mm x 150mm x 15mm are commonly used. These sizes provide the necessary strength and stability for supporting structures. https://medium.com/@marketingsteel6/ms-tmt-bar-prices-an-in-depth-guide-to-cost-and-purchasing-strategies-b72b9457db5a