3 axles 30 to 60 Tons semi box trailer enclosed cargo trailers for sale

Having side rail in the loading part, our cargo semi-trailer has excellent applicability. Being the best special purpose vehicle for medium and long-distance transport, our cargo semi-trailer can be widely applied to the medium and heavy-duty transport and bulk freight transport.
We adopt premium steel material, advanced technology and strict production to our cargo trailer. It features reasonable structure, reliable properties, easy operation and beautiful appearance,Our cargo semi-trailer has the frame of cross beam structure and the stringer of straight type or gooseneck type. The web plate’s height ranges from 400mm to 550mm. We adopt the automatic submerged arc welding to the stringer and shot blasting to the frame. Penetrated through the stringers, the beams are welded with the stringers as a whole.

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Sitong Trailer Factory
Founded in 2002, more than 14 years experience in production and export,with strong technical support and dependably after-sales service.
Located in Liangshan, Shandong Province(Trailer production base of China) and covers an area of more than 35000 square meters,we enjoy convenient access to major transportation networks,with more than 150 people and 20 technicians including 5 professor senior engineer and 12 senior technicians,all our products are manufactured with advanced equipment and strict QC procedures in order to ensure high quality.Meanwhile,OEM and ODM orders are welcome.

Description of products
Tanker Trailer / Low Bed Trailer / Flatbed Trailer / Dump Trailer / Container Transport Trailer / Side Wall Semi Trailer / Fence Semi Trailer / Box semi trailer etc.  

About R&D
Sitong Trailer has a team of passionate and experience R&D engineers.Most of them possess advanced degrees and rich experiences.The managements are also specialists and experts with an average of over 10 years experience.These individuals are the ones who developed the core intellectual property of the company.This is the technical foundation of the expertise that make Sitong a industry leader.

About Qality Control
As a leading semi trailer manufacturer,Sitong is delicated to quality control by ensuring quality in every step of the manufacturing prcess.Our quality assurance management includes:
1.A set of detailed procedures that covers all manufacturing processes.
2.Monitoring processes to ensure their effectiveness.
3.Keeping adequate records.
4.Checking output for defects,with appropriate corrective action wherever necessary.
5.Regular review of individual processes and the quality system itself for effectiveness.
6.Facilitating continuous improvement.

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