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Sinotruck Howo Sales Co.,Ltd

Address: Stone Silver Crystal International, Third Floor, East Unit, Room 1603, Shizhong District, Jinan, Shandong, China

Tel: +86-531-69885132

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+86-18253112966

E-mail: cdtruck@sinotrucksale.com

How We Manufacture A GOOD Trailer For You?

- May 06, 2017 -

How we manufacture a GOOD trailer for you?

 

Today I gonna show you the basic manufacturing process of the trailers. And telling you some points that may affect the quality of trailer during manufacturing.

First, before mass production, technical department makes the design drawing according to the needs of users and the market, so that the main technical parameters of each trailer meet customs' requirement. Then the drawing will be delivery to the Ministry of manufacturing.

1.Cutting board

In accordance with the design drawing, using the CNC cutting machine cut out the components, including beam webs, reinforcing plate, etc. as well as the standards gadget.


china chengda trailer manufacturer, good price semi trailers

china chengda trailer manufacturer, good price semi trailers

china chengda trailer manufacturer, good price semi trailers



china chengda trailer manufacturer, good price semi trailers


2. Beam, submerged arc welding girders

The second step is to fixed the cut web and up and down plates together. Then welding beams by SAW. This step is very important, for fixed beams and submerged arc welding are very demanding. The main beam will be fragile and  if technical process is below standard. And how can you say a trailer good without a good main beam!

china chengda trailer manufacturer, good price semi trailers

china chengda trailer manufacturer, good price semi trailers

3. Open holes and collate

First, cut beam plates out of U-shaped hole, which could go through the secondary beam. Then paralleling I-beam girder, and put secondary beam through U-shaped holes. Collating the depth of parallelism is very important. Once the I-beam girders is not paralleled well , it will cause serious friction between tyres and beams.china chengda trailer manufacturer, good price semi trailers


 4. Welding side beam and kingpin

In this step, the main beam has basically shape up. The next step is to weld the side beams into basic frame structure. At the same time, welding the traction pin to the pointed location in the contract .

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5. Welding frame and suspension

In this step, it requires strict control about right size of suspension, as well as the right position. Otherwise. It will cause serious friction between tyres and beams, too.

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6. Welding the neck

This step is mainly for low bed trailer and high-low type trailer. Not for the flat bed trailer. The neck is welded to the low bed trailer. After welding, reinforcement is a necessary step to ensure the strength of the trailer.

7. BEDDING

The floor is fully welded or soldered down on the frame.

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8. The vertical panels for vertical doors

Fixed the panel by spot welding, then welding the columns, hinges, etc, in order to keep the vertical plate appearance.


9. Dull polishing , painting

Dull polishing is the previous step before the painting. Some manufacturers without blasting workshop will polished with a high-pressure gas blowing and polish welding slag at this stage.

Paint usually proceed in a well-ventilated workshop. While to spray paint beautiful, it is up to the technology of works and paints’ quality.

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10. Install walking system

After painting, the next stage is to assemble the walking system, including the axles, suspensions, etc. and then test.

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11. Install the tires

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12. Move to the open warehouse and waiting to delivery.


In a word, standardizing manufacturing process guarantee the quality of the trailers. And that's how we do to make the good trailers for our clients!

 

china chengda trailer manufacturer, good price semi trailers

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