一般來說角鋼可根據結構的不同要求而組成各種不同的受力構件，也可作構件之間的連接件，因此它被廣泛地用于各種建筑結構和工程結構，如房梁、橋梁、輸電塔、起重運輸機械、船舶、工業爐、反應塔、容器架、電纜溝支架、動力配管、母線支架安裝以及倉庫貨架等。
Generally speaking, angle steel can form various stress components according to different structural requirements, and can also be used as connectors between components. Therefore, it is widely used in various building structures and engineering structures, such as house beams, bridges, transmission towers, hoisting and transportation machinery, ships, industrial furnaces, reaction towers, container racks, cable trench supports, power piping, bus support installation, warehouse shelves, etc.
角鋼屬于建造用碳素結構鋼，是簡單斷面的型鋼鋼材，主要用于金屬構件及廠房的框架等。在使用中要求有較好的可焊性、塑性變形性能及一定的機械強度。生產角鋼的原料鋼坯為低碳方鋼坯，成品角鋼為熱軋成形、正火或熱軋狀態交貨。角鋼俗稱角鐵、是兩邊互相垂直成角形的長條鋼材。
Angle steel belongs to carbon structural steel for construction. It is a section steel with simple section. It is mainly used for metal components and plant frame. In use, it is required to have good weldability, plastic deformation performance and certain mechanical strength. The raw material billet for angle steel production is low-carbon square billet, and the finished angle steel is delivered in hot rolling forming, normalizing or hot rolling state. Angle steel, commonly known as angle iron, is a long strip of steel whose two sides are perpendicular to each other and form an angle.
角鋼還有等邊角鋼和不等邊角鋼之分。等邊角鋼的兩個邊寬相等，其規格以邊寬×邊寬×邊厚的毫米數表示。如"∟30×30×3"，即表示邊寬為 30毫米、邊厚為3毫米的等邊角鋼。除此之外也可用型號表示，型號是邊寬的厘米數，如∟3#型號不表示同一型號中不同邊厚的尺寸，因而在合同等單據上將角鋼的邊寬、邊厚尺寸填寫齊全，避免單獨用型號表示。
Angle steel can also be divided into equilateral angle steel and unequal angle steel. The two sides of equilateral angle steel are equal in width, and the specification is based on the side width × Edge width × The edge thickness is expressed in millimeters. Such as "∟ 30" × thirty × 3 "refers to the equilateral angle steel with side width of 30mm and side thickness of 3mm. In addition, it can also be expressed by model. The model is the centimeter of side width. For example, ∟ 3# model does not represent the dimensions of different side thicknesses in the same model. Therefore, the dimensions of side width and side thickness of angle steel shall be filled in in the contract and other documents to avoid using model alone.
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