What is the crossbeam of semi-trailer and where is it?

Semi-trailer girder before painting, girder in red area:

The yellow area in the figure below shows the position of the semi-trailer girder in the vehicle:

Semi-trailer girder is the main part of semi-trailer, and there are many longitudinal auxiliary girders near the girder, which constitute the whole cargo consignment platform of semi-trailer. In addition, if the semi-trailer girder is used improperly in manufacturing and material selection, traffic accidents such as broken girder will occur (semi-trailer girder steel is mainly 5 10L and 6 10L).

Can you be a navy after excimer laser surgery? The kind that gets on the boat, the surface sailor.

What should I do if there are wrinkles on my upper eyelids?

Changchun Lantian plastic hospital hospital experts

Does playing the piano cause children's fingers to bend?

How about the surrounding facilities of Langfang Happiness City Yayuan Community?

What do you mean by bright eyes and white teeth?

Is forehead plastic surgery safe? Will it leave scars?

Yang Qing: The ugly girl of Nortel successfully married a rich family after graduation. How is she now?

Where is the chairman of Chengde Jinlong from?

Who knows the name of this beauty?