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.

型材是铁或钢以及具有一定强度和韧性的材料通过轧制、挤出、铸造等工艺制成的具有一定几何形状的物体。这类材料具有的外观尺寸一定，断面呈一定形状，具有一定的力学物理性能。型材既能单独使用也能进一步加工成其他制造品，常用于建筑结构与制造安装。型材的材质、规格尺寸等可参照相应的***标准。Thewidthofthethinplateis500~1500mm,andthethicknessis600~3000mm。轧机结构和轧机布置形式较多。在结构形式上有二辊式轧机、三辊式轧机、孔型轧机、多辊孔型轧机、Y型轧机、45°轧机和悬臂式轧机等。

按***用途分，有油桶用板、搪瓷用板、弹板用板等；按表面涂镀层分，有镀锌薄板、镀锡薄板、镀铅薄板、塑料复合钢板等。

According to professional use, there are oil board, enamel plate, bulletproof plate and so on. According to surface coating, there are galvanized sheet, tin plate, leaded sheet, plastic steel plate and so on.

装饰单板贴面胶合板（装饰面板、贴面板），是将精密刨切成厚度为0.2 mm以上的薄木皮，以胶合板为基材，经过胶粘工艺制作而成的具有单面装饰作用的装饰板材。

Decorative veneer veneer plywood (decorative panel, veneer) is a decorative plank which is made of a veneer with a veneer of 0.2 mm thickness and plywood as the base material.