工字钢如名所示，是一种“工”字形截面型钢，上下翼缘内表面有倾斜度，一般为1：6，使得翼缘外薄而内厚，因此造成工字钢在两个主平面的截面特性相差巨大，在应用中难以发挥刚才的强度特性。在品各方面，除了桥梁钢板、锅炉钢板、汽车制造钢板、压力容器钢板和多层高压容器钢板等品种纯属厚板外，有些品种的钢板如汽车大梁钢板（厚2。虽然工字钢市场上上也出现了加厚工字钢，但工字钢的结构已经决定了其抗扭性能短板。

I like the name suggests, is a kind of I-shaped section steel flange on the inner surface of slope is generally 1:6, the flange and the thickness of thin, resulting in two main characteristics of I-beam section plane is huge, just to play strength characteristics in the application. Although the I-steel market has also appeared to be thickened I-steel, the structure of I-steel has already determined its torsional performance.

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.

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"