Specifications are expressed in millimeters with side width × side width × side thickness, such as "∟30×30×3", which means an equilateral angle steel with a side width of 30mm and a side thickness of 3mm.

2. Model representation

The model is the number of centimeters of side width, such as ∟3#. The model does not refer to the dimensions of different side thicknesses in the same model, so the dimensions of side width and side thickness of angle steel should be completely filled in the contract and other documents to avoid using the model alone.

The specification of hot-rolled equilateral angle steel is 2#-20#. Angle steel can be composed of various stressed components according to the different needs of the structure, and can also be used as connectors between components.

It is widely used in various building structures and engineering structures, such as beams, bridges, transmission towers, lifting and transportation machinery, ships, industrial furnaces, reaction towers, container racks, warehouses and so on.

Extended data:

chemical composition

Composition index: the chemical composition of angle steel belongs to the general structural steel series, and the main verification indexes are C, Mn, P and S. According to different brands, the content is different, and the approximate range is C.

Test method: When testing the above chemical components, the commonly used standard test methods are GB223, JISG/KOOC-0/2/KOOC-0/-KOOC-0/5, BS/KOOC-0/837, BS Manual/KOOC-0/9, and г.

standard

GB/T2 10 1-2008 (General Provisions on Acceptance, Packaging, Marking and Quality Certificate of Section Steel); GB/T706-2008 (instead of GB/T9787-88 GB/T9788-88) Dimensions, Shape, Weight and Allowable Deviation of Hot Rolled Equilateral/Unequal Angle Steel.

JISG3 192-94 (shape, size, weight and allowable deviation of hot rolled steel); DIN 17 100-80 (quality standard for common structural steel); гост 535-88 (technical specification for ordinary carbon steel).

According to the provisions of the above standards, angle steel should be delivered in bundles, and its bundling pass and length should comply with the regulations. Angle steel is generally delivered naked, so attention should be paid to moisture prevention during transportation and storage.

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