很多钢格栅板厂家都有过这样的经历，在出厂的时候钢格板的质量指标外形等每一项都是合格的，但是当产品镀完锌后运到目的地的时候，有的钢格板客户反应有些钢格板形状和外形和图纸的样子和尺寸有些误差，甚至有的发生了严重的变形，比如包边弯曲变形，对角线相差很多，横杆开焊等等。这就是我们厂商经常说的钢格板变形的问题。这时采购商往往会主观的认定就是厂家生产产品的质量差,造成工期的延误，如果钢格板用在沟盖方面，严重的还会引发生产责任事故，发生法律纠纷。
Many steel grating manufacturers have such experience. When they leave the factory, the quality index and shape of the steel grating are all qualified. However, when the products are transported to the destination after zinc plating, some steel grating customers report that some steel grating shape and shape have some errors with the sample and size of the drawing, and even some have serious deformation, such as bending deformation of the edge, There are many differences in diagonal lines, and the welding of cross bar is open. This is what our manufacturers often say about the deformation of steel grating. At this time, the purchaser often subjectively believes that the quality of the products produced by the manufacturer is poor, resulting in the delay of the construction period. If the steel grating is used in the trench cover, serious production liability accidents and legal disputes will occur.
由于钢格板自身就有钢体内的内应力，如果在钢格板进行加工焊接的时候，扁钢没有进行校直，而是把扁钢直接放在模具上焊接，表面上看起来是直的，实际上这时钢格板产生了比较强的内应力，如果再加上较强的外力作用，内应力会表现出来，钢格板外形就会发生弯曲变形。
Because the steel grid has internal stress in the steel body, if the flat steel is not straightened when the steel grid is processed and welded, the flat steel is directly welded on the mold, which looks straight on the surface. In fact, the steel grid has a relatively strong internal stress. If the strong external stress is added, the internal stress will show up, and the steel grid shape will develop Bending deformation.