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ASTM võrdne nurk terasest tsingitud raud L / V kuju mahe terasest nurgavarras
commonly known as angle iron, is a long steel with two sides perpendicular to each other. There are equal angle steel and unequal angle steel.The width of two sides of an equal angle steel is equal. Spetsifikatsioon väljendatakse mm külje laiuse × külje laiuse × külje paksuses. Such as “∟ 30 × 30 × 3″, that is to say, equal angle steel with side width of 30mm and side thickness of 3mm. It can also be expressed by model. The model is the centimeter of the side width, such as ∟ 3 × 3. The model does not represent the dimensions of different edge thicknesses in the same model, so the edge width and edge thickness dimensions of angle steel shall be filled in completely in Leping ja muud dokumendid, et vältida ainult mudeli kasutamist. Kuuma rullitud võrdse jala nurgaterase spetsifikatsioon on 2 × 3-20 × 3.