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H型钢属于经济裁面型材(其它还有冷弯薄壁型钢、压型钢板等)，由于截面形状合理，它们能使钢材更高地发挥效能，提高承裁能力。

H steel is an efficient and economical cutting section (other cold-formed thin-walled steel and profiled steel sheets). Because of the reasonable shape of the section, they can make the steel play a more effective role and improve the bearing capacity.

H型钢是一种断面力学性能较工字钢优良的经济型断面钢材，因其断面的形状与英文字母“H”相同而得名。热轧H型钢的翼缘比工字钢宽、侧向刚度大、抗弯能力强。同等规格下H型钢理重较工字钢轻。

H steel is a kind of economical section steel with better section mechanical properties than that of I-steel. Because the shape of the section is the same as that of the English letter "H". The flange of hot rolled H steel is wider than that of I-steel, large lateral stiffness and strong bending resistance. Under the same specification, the weight of H steel is lighter than that of I-steel.

普通工字钢和轻型工字钢的型号是用其腰高厘米数的阿拉伯数字来表示，腹板、翼缘厚度和翼缘宽度不同其规格以腰高×腿宽(b)×腰厚(d)的毫数表示，如“普工160×88×6”。

The ordinary beam and light I-beam model is the digital Arabia with its waist high cm number to represent, web and flange thickness and flange width of different specificati to the waist high (H) * (b) * waist leg width thickness (d). The number of said, such as "general 160 x 88 x 6"

型材按断面尺寸可分为大型、中型和小型型材，其划分常以它们分别适合在大型、中型和小型轧机上轧制来分类。Bendingdegree:whentheheightoftheI-steelislessthanorequalto400MM,thebendingdegreeofeachmetermustnotbemorethan1。大型、中型和小型的区分实际上并不严格。另外还有用单重（kg/m）来区分的方法。一般认为，单重在5 kg/m以下的是小型材，单重在5～20 kg/m的是中型材，单重超过20 kg/m的是大型材。因此又可以进一步分成凸缘型材、多台阶型材、宽薄型材、局部特殊加工型材、不规则曲线型材、复合型材、周期断面型材和金属丝材等等。