H型钢的翼缘都是等厚度的，有轧制截面，板材价格，也有由3块板焊接组成的组合截面。工字钢都是轧制截面，翼缘内边有1：10坡度。

Ｈ型钢的轧制不同于普通工字钢仅用一套水平轧辊，圣霖板材，由于其翼缘较宽且无斜度(或斜度很小)，故须增设一组立式轧辊同时进行辊轧。

The flange of the H steel is equal thickness， has a rolling cross section， and a section of 3 plates. The I-steel is the rolling section， and the inner edge of the flange has the 1:10 gradient.

The rolling of H steel is different from ordinary I-beam only with a set of horizontal rolls. Because of its wide flange and no slope (or very ***all slope)， a group of vertical rollers should be set up and rolled at the same time.

合金元素与铁、碳的相互作用

合金元素加入钢中后，主要以三种形式存在钢中。即：与铁形成固溶体；与碳形成碳化物；在高合金钢中还可能形成金属间化合物。

The interaction of alloying elements with iron and carbon

When alloy elements are added to steel， they mainly exist in three forms. Namely: to form a solid solution with iron; carbide and carbon; in high alloy steels are also likely to form intermetallic compounds.

弯曲度：工字钢高度小于或等于400MM时，每米弯曲度不得大于1.5MM，圣霖板材采购，总弯曲度不得大于总长度的0.15%。高度大于400MM时，每米弯曲度不得大于1.0MM，总弯曲度不得大于总长度的0.1%。

Bending degree: when the height of the I-steel is less than or equal to 400MM， the bending degree of each meter must not be more than 1.5MM，板材， and the total bending degree should not be more than 0.15% of the total length. When the height is greater than 400MM， the bending degree of each meter must not be more than 1.0MM， and the total bending degree should not be more than 0.1% of the total length.

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