... Steel,Website:http://www.topsino-steelpipe.com,commonly known as angle iron.Angle steel can be composed of a variety of force ... various construction,also can be made of connections between components.Angle Steel is widely used in various building structures and engineering ... are Q235B,SS400,A36 grade(5) angle steel length:4M,5M,6M,9M,12M(6) Angle steel mainly applicate in shipbuilding and construction ...