非标准机械就是没有定型的机械产品，一般在市场上直接买不着，要向厂家订制。同样功能的机械其大小，形制等都有可能不同。另外，非标设备受用户场地的影响也很大，设备的设计往往受用户的一些条件的制约。虽然形制没有标准遵循，但其中的机构、零件的设计还是有标准可言的。
Nonstandard machinery is a kind of mechanical product that has no fixed shape. Generally, it can't be bought directly in the market. It should be customized from the manufacturer. Machines with the same function may have different sizes and shapes. In addition, non-standard equipment is also greatly affected by the user's site, and the design of equipment is often restricted by some conditions of users. Although there is no standard for shape, there are still standards for the design of mechanism and parts.