One, model standard

The gantry crane uses 4 main features of the code, the rated quality, the span, and the work level to represent the model.

Two, single girder gantry crane

The symbols are: MDG, MDE, MDZ, MDN, MDP, MDS.

Such as: MDN single girder gantry crane grab single trolley;

MDS - single girder gantry crane with three car.

Three, double beam gantry crane

The symbols are: MG, ME, MZ, MC, MP, MS.

Such as: MG - double beam single car hook door type crane;

ME - double beam double car hook door type crane