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SHENGRUNAUTO

Ten stages. Your unit is signed off at each one before it moves to the next.

Operators on a modern semi-trailer line carrying out automated cutting, robotic welding, chassis assembly and final inspection.
  1. 01Custom design
  2. 02Material
  3. 03Cutting
  4. 04Welding
  5. 05Correction
  6. 06Coating
  7. 07Running gear
  8. 08Electrics and brakes
  9. 09Inspection
  10. 10Dispatch
  1. International engineering team reviewing tanker drawings and a scale model around a table
    01/ 10

    Custom design

    • In-house engineers confirm payload, dimensions, axle layout and market requirements with you before anything is cut
    • The approved drawing then controls both production and inspection, so what is checked at the end is what you signed at the start
    Pre-sales engineering support
  2. Raw material receiving and batch traceability, concept illustration
    02/ 10

    Raw materials

    • Structural steel selected for the load and application you specified, not to whatever grade is cheapest that month
    • Grade, thickness and mill certificates verified before production, with material issued by heat number so your chassis stays traceable to its cast
  3. CNC plasma torch cutting holes and profiles in heavy steel plate, sparks visible at the cut
    03/ 10

    Cutting and forming

    • CNC laser, plasma cutting and large-scale forming equipment in house, so plate goes from raw to formed without leaving the plant
    • Digital production data drives every cut, so the same part repeats to the same dimension across a whole batch and reaches the jigs already square
  4. Automatic welding carriage running a circumferential seam on a tank shell, arc lit, seen past the flanged end opening
    04/ 10

    Welding

    • Automated submerged-arc, MIG and TIG welding, so structures and materials are each welded by the process that suits them rather than one process used for everything
    • Dedicated fixtures hold the geometry and weld inspections verify the strength, so a repeat order is built to the same geometry as the first one you bought
  5. Trailer frame on the straightening bed, geometry being checked against the jig before coating
    05/ 10

    Frame correction

    • Every frame is corrected after welding to restore the designed geometry, because welding always pulls steel -- and it is done before coating, since a twist sealed under paint is permanent
    • Straightness, diagonals and mounting references are measured before assembly, which is what makes a trailer track straight instead of scrubbing the tyres on one side
  6. Trailer body inside the enclosed spray and baking booth under the booth lighting
    06/ 10

    Shot blasting and coating

    • Through-type shot blasting and a 21-metre spray-and-bake booth treat the frame whole, never in sections -- sectional painting is what produces colour steps and first-year edge rust
    • Coating thickness, adhesion and finish are inspected, so the protection is verified rather than assumed from the fact that paint was applied
  7. Axles and suspension being mounted to coated chassis on the assembly line, concept illustration
    07/ 10

    Axle and suspension assembly

    • Mechanical, air and single-point suspension configurations are all available, so the running gear is matched to your roads instead of to one standard build
    • Axle position, fastening and alignment are controlled during assembly, and mounts are Huck-fastened rather than site-welded, so they stay inspectable and replaceable years later
  8. Air lines and wiring harness being clipped along the chassis at the assembly station
    08/ 10

    Electrical and braking systems

    • Sealed LED lighting, moulded harnesses and dual-circuit electrical systems, routed to a drawing rather than zip-tied along a beam -- the failure a driver finds on the road, not one we find in the yard
    • Established braking components with optional ABS, built to your destination market's regulations rather than to one domestic standard left for you to correct
  9. Two inspectors ultrasonically testing the welds of a bare trailer chassis, one holding the probe and one logging readings on a tablet, concept illustration
    09/ 10

    Inspection

    • More than 400 sets of testing equipment cover material, weld and finished-vehicle inspection, so verification does not depend on sending work out
    • Quality control covers 170 finished-vehicle checks and 345 component checks, applied to every unit rather than to one sample from the batch
    Inspection scope and standards
  10. Knocked-down trailer frame sections being loaded into a shipping container at the port, with axles and wheels palletised alongside, concept illustration
    10/ 10

    Dispatch

    • Configuration, accessories, markings and documents are all verified before shipment, with export paperwork prepared in house so a customs query is answered by the people who built the unit
    • Protection, securing and loading are arranged for each product and shipping method -- driven to port on their own running gear, or knocked down to CKD/SKD to cut your freight cost per unit
    Delivery record and export process

The conditions behind these stages

The site and the workshops, the lines and the machines on them, annual capacity and the approvals.

Factory & Capacity

A question about one of these stages?

Tell us which stage matters to you. We can send the welding procedures, the in-process inspection records, or photographs of units currently on the line.

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