Understanding ISA Steel Angles The full form of ISA is (Indian Standard Angles). What are ISA Steel Angles? ISA (Indian Standard Angles) is a L shapes structural steel shapes with cross-section. That is fabricated by given specifications by the Bureau of Indian Standards (BIS). That is use for provide the exctra supports steel stracture. ISA steel angles are available in two typ... https://www.growmechanical.com/isa-steel-angle-weights-tables-charts-and-formulas/