不同于普通工字型的是H型钢的翼缘进行了加宽，且内、外表面通常是平行的，这样可便于用高强度螺栓和其他构件连接。其尺寸构成合理系列，型号齐全，便于设计选用。（除了吊车梁用工字型钢）。
Unlike the ordinary I-type, the flange of H steel is widened, and the inner and outer surfaces are usually parallel, so that it can be easily connected with high-strength bolts and other components. Its size is a reasonable series, and the model is complete, which is convenient for the design. (except for crane girder with I-type steel)
工字钢的边长小，高度大，只能承受单方向的力。 H型钢槽深，厚度大，可以承受两个方向的力。
工字钢只能用于横梁，而H型钢才能用于结构的承重柱。
The length of the I-steel is ***all and high. It can only bear the force of the single direction. The H steel groove is deep and thick, and can bear the force of two directi.
I-steel can only be used for crossbeams, and H steel can be used for structure bearing columns.
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。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。简单断面型材的横断面对称、外形比较均匀、简单，如圆钢、线材、方钢和扃钢等。
特性:装饰面板一般用于清油装饰。表层薄而板是名贵木种，纹理天然、华美。基材一般是胶合板，性能稳定可靠。
Features: decorative panels are generally used for oil decoration. The surface is thin and board is a valuable wood species with natural and beautiful texture. The base material is generally plywood, the performance is stable and reliable.
