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SHENGRUNAUTO

Custom semi-trailer manufacturing, from transport brief to finished vehicle

As a custom semi-trailer manufacturer, we engineer the vehicle around what you carry, where it operates and how it is loaded. Starting from one of 65 standard models, we adapt payload, dimensions, structure, running systems and equipment to the job and destination requirements.

A Shengrun lowbed trailer carrying construction equipment at a work site

65

Vehicle models

Reusable product and engineering resources—not a required starting point

15

Customization areas

Covering structure, running gear, functions and market adaptation

100+

Customizable specifications

Matched to cargo, operating conditions and destination requirements

735

Component families

Selectable across 18 complete vehicle systems

Three customization modes

01

Configuration customization

Select and integrate axles, suspension, tires, braking, lighting, colors and accessories around the required operating conditions.

Configuration customization conceptual engineering line drawing
02

Structural and functional customization

Engineer payload, dimensions, frame, platform and operating functions as one vehicle system for the transport task.

Structural and functional customization conceptual engineering line drawing
03

New vehicle co-development

Create a non-standard trailer from a transport brief, customer drawings, a reference unit or field information.

New vehicle co-development conceptual engineering line drawing

From requirements to confirmed production

  1. 01

    Requirement collection

  2. 02

    Technical evaluation

  3. 03

    Configuration and quotation

  4. 04

    Specification and drawing confirmation

  5. 05

    Production and inspection

  6. 06

    Delivery and documentation

One custom trailer, multiple capabilities

01

Removable

Sidewalls, posts, ramps and cargo supports can be removed when the next load needs an open platform.

02

Adjustable

Axle spacing, support positions and restraint points are matched to load distribution and operating practice.

03

Extendable

Telescopic platforms and beams provide extra length only when long cargo requires it.

04

Interchangeable

Reserved mounting points let operators exchange equipment without rebuilding the base trailer.

The whole trailer is part of the design

Technical side-elevation line drawing of a lowbed trailer with numbered customizable systems
  1. 1Gooseneck
  2. 2Coupling & support
  3. 3Hydraulics
  4. 4Deck & floor
  5. 5Chassis
  6. 6Cargo restraint
  7. 7Suspension
  8. 8Axles & braking
  9. 9Tires & rims
  10. 10Loading system
  11. 11Electrical & lighting

Customization capability map

01 / Requirement input

Cargo and transport taskRequired payloadCargo dimensionsRoad and terrainLoading methodDestination requirements

02 / Base architecture

65

Standard vehicle models

Explore our trailer range

03 / Engineering customization

15

Areas

100+

Specifications

04 / Production integration

735

Component families

View our supply chain
15 engineering customization areas and 130 parameters with their impact
Customization areaCustomizable parameterValue and impact
M01Transport task & vehicle matchingM01-01Cargo / Medium TypeVehicle type, materials, structure and safety systems
M01-02Cargo Form & PackagingLoad surface, containment and securing method
M01-03Unit Cargo DimensionsDeck, body, extension and overall dimensions
M01-04Unit Weight & Total LoadPayload and structural strength
M01-05Cargo Density / Required VolumeBody, tank or silo volume
M01-06Centre of Gravity & Load PlacementStability and load distribution
M01-07Road, Terrain & Site ConditionsSuspension, mobility, steering and protection
M01-08Tractor & Interface RequirementsFifth-wheel height, kingpin, air and electrical connections
M02Capacity & load distributionM02-01Design PayloadFrame, axles, tires and braking
M02-02Tare Weight TargetActual payload and operating efficiency
M02-03Technical Gross Trailer MassVehicle structural design limits
M02-04Design Kingpin LoadGooseneck, kingpin and tractor matching
M02-05Design Axle-group LoadAxle count, wheelbase and suspension selection
M02-06Design Load per AxleAxle, tire and braking specifications
M02-07Point / Concentrated LoadMain beams, cross members and local reinforcement
M02-08Floor / Deck Load RatingFloor material, thickness and cross-member spacing
M03Vehicle dimensions & geometryM03-01Overall LengthLoad capacity, regulations and turning
M03-02Overall WidthCargo fit, regulations and clearance
M03-03Overall HeightHeight limit, stability and internal space
M03-04WheelbaseLoad distribution and turning radius
M03-05Axle SpacingAxle-group loading and regulatory compliance
M03-06Fifth-wheel HeightTractor matching and body level
M03-07Loading Deck HeightLoading gradient and overall transport height
M03-08Minimum Ground ClearanceUnpaved-road and site trafficability
M03-09Turning Radius & Swept PathUrban, port and worksite maneuverability
M04Chassis & structural engineeringM04-01Chassis ArchitectureBase forms: flatbed, gooseneck, lowbed, modular
M04-02Main Chassis Material GradeStrength, tare weight and durability
M04-03Main Beam Section & HeightBending capacity and deck height
M04-04Top Flange DimensionsMain-beam compression and overall strength
M04-05Web ThicknessShear capacity and local stability
M04-06Bottom Flange DimensionsTensile capacity and fatigue life
M04-07Crossmember Material & SectionFloor bearing and lateral stiffness
M04-08Crossmember Spacing & LayoutConcentrated loads and floor deflection
M04-09Local Reinforcement & Joint DesignService life of gooseneck, suspension, legs and load points
M05Axle systemM05-01Number of Axles / Axle LinesLoad bearing, axle load and turning
M05-02Axle BrandMarket preference, service and spare parts
M05-03Axle ModelLoad bearing, braking and interfaces
M05-04Technical Capacity per AxleLoad capacity and safety margin
M05-05Axle Construction TypeRigid, drop, cranked, swing or independent structure
M05-06Axle TrackStability, width and tire arrangement
M05-07Axle Position & Bogie LayoutLoad distribution and handling
M05-08Wheel-end Interface & Maintenance ConceptHubs, bearings, lubrication and maintenance interval
M06Suspension & steeringM06-01Suspension TypeMechanical, air, single-point, bogie or hydraulic solution
M06-02Suspension Brand & ModelLoad bearing, service and spare parts
M06-03Suspension RatingAxle-group loading and durability
M06-04Design Ride HeightBody level, deck height and trafficability
M06-05Spring / Airbag SpecificationComfort, load bearing and road-condition adaptation
M06-06Raise / Lower TravelLoading, obstacle clearance and leveling
M06-07Steering SystemSelf-tracking, forced, hydraulic or mechanical steering
M06-08Steering Angle, Lock & ReturnTurning space and high-speed stability
M07Tyres & rimsM07-01Tyre SizeLoad bearing, deck height and trafficability
M07-02Ply Rating / Load IndexSingle-tire capacity and safety margin
M07-03Speed RatingOperating speed and temperature rise
M07-04Tread Pattern & ApplicationRoad, mine, gravel and mud performance
M07-05Single / Twin Tyres & QuantityLoad bearing, tare weight and maintenance cost
M07-06Rim Size & MaterialTire matching, tare weight and durability
M07-07Spare Tyres & Carrier LocationRange, maintenance and space layout
M08Coupling & supportM08-01Kingpin Size & StandardCompatibility with the fifth wheel
M08-02Kingpin PositionFront swing clearance and load distribution
M08-03Kingpin Mounting / Flange TypeStructural strength and maintenance
M08-04Coupling HeightTractor matching and vehicle attitude
M08-05Landing Gear Brand & ModelOperation, service and procurement standards
M08-06Landing Gear Capacity & Mounting HeightStatic support and ground clearance
M08-07Foot, Crank & Connecting ShaftGround adaptation and ease of operation
M09Braking & pneumaticsM09-01Drum / Disc BrakesBraking performance, maintenance and cost
M09-02Brake SizeHeat capacity and braking force
M09-03ABS / EBS ArchitectureRegulations, safety and tractor compatibility
M09-04Sensor / Modulator ConfigurationMulti-axle control and stability
M09-05Brake Valve Brand & ModelMarket preference, service and functions
M09-06Brake Chamber / ActuatorBraking force and parking capability
M09-07Air Reservoir Capacity & LayoutResponse, space and regulations
M09-08Air Couplings, Hoses & LinesTractor interface and environmental resistance
M09-09Stability, Lift-axle & Wear FunctionsRSS, traction assist and maintenance alerts
M10Electrical, lighting & smart systemsM10-01System VoltageTractor and auxiliary-equipment compatibility
M10-02Electrical Sockets & Pin StandardTractor interface and regional standards
M10-03Lamp Type & BrandVisibility, durability and service
M10-04Lighting Quantity & LayoutLocal regulations and vehicle dimensions
M10-05Work, Reversing & Warning LightsNight operation and loading safety
M10-06Harness, Sealing & Connector RatingRain, dust and corrosive environments
M10-07Camera & Reversing AssistanceBlind spots and site operation safety
M10-08Telematics & Condition MonitoringPositioning, tire pressure, axle load, temperature and door status
M11Deck, body & cargo spaceM11-01Internal / Usable LengthCargo and pallet arrangement
M11-02Internal / Usable WidthCargo arrangement and side clearance
M11-03Internal / Usable HeightVolume and overall transport height
M11-04Deck / Floor MaterialStrength, anti-slip, cleaning and durability
M11-05Deck / Floor ThicknessConcentrated loads and service life
M11-06Body / Vessel ProfileVolume, center of gravity, discharge and cleaning
M11-07Sidewall, Fence or Stake HeightCargo containment and loading volume
M11-08Sidewall, Door, Roof or Curtain OperationSide, rear, crane loading and handling efficiency
M11-09Lining, Sealing & Internal FinishLeak prevention, wear resistance, hygiene and cargo protection
M12Loading, unloading & hydraulicsM12-01Extension Type & RangeOver-length cargo and overall vehicle length
M12-02Deck Widening System & RangeOver-width equipment and transport-mode switching
M12-03Loading Ramp TypeMechanical, spring, hydraulic or removable form
M12-04Ramp Dimensions & Loading AngleEquipment trafficability and grounding
M12-05Ramp Rating & SurfaceLoading safety for wheeled and tracked equipment
M12-06Tipping / Discharge Direction & AngleRear, side discharge and unloading efficiency
M12-07Hydraulic Cylinder Brand, Model & StrokeLifting capacity, speed and stability
M12-08Pump, PTO & Power PackTractor matching and standalone operation
M12-09Hydraulic Pressure, Control & Emergency OperationSafety, reliability and on-site operation
M13Cargo securement & operational equipmentM13-01Number of Lashing PointsAvailable securing points and loading flexibility
M13-02Lashing Layout & SpacingDifferent cargo and loading combinations
M13-03Lashing-point RatingCargo securing safety
M13-04Container Compatibility & Twist-lock Layout20/30/40/45 ft and other combinations
M13-05Stakes, Stanchions & PocketsAnti-roll for pipes, timber and long materials
M13-06Coil Well, Wheel Recesses & ChocksPositioning of coils, machinery and vehicles
M13-07Ferry Lashings & Intermodal Lifting FeaturesSea, rail and intermodal operations
M13-08Toolboxes, Spare Carriers & On-board EquipmentMaintenance, storage and on-site work
M14Materials, finish & environmental protectionM14-01Body / Vessel Material & GradeWeight, strength, corrosion and medium compatibility
M14-02Wear, Corrosion or Food-grade LiningService life, cleaning and cargo safety
M14-03Blasting & Surface PreparationCoating adhesion and durability
M14-04Galvanising, Coating System & DFTAnti-corrosion life and repair interval
M14-05Colour, Marking & BrandingBrand identity and fleet management
M14-06Heat, Cold, Moisture, Dust & Salt ProtectionRegional environment and operating reliability
M15Market compliance & application systemsM15-01Destination Market & Operating ContextApplicable regulations and design limits
M15-02Legal Mass, Axle-load & Dimension LimitsLegal operation and load schemes
M15-03Braking Regulation / ApprovalABS, EBS and braking configuration
M15-04Lighting & Conspicuity RequirementsLamp position, count and markings
M15-05Mechanical Coupling StandardKingpin, connector and combination compatibility
M15-06Side Guard, Rear Guard & Mudguard RequirementsRoad safety and certification
M15-07Homologation, Documentation & MarkingRegistration, customs clearance and delivery
M15-08Dangerous-goods Class, Tank Code & CompatibilityTank material and safety systems
M15-09Tank Volume, Compartments & BafflesDistribution method, stability and loading
M15-10Tank Pipework, Valves, Pumping & MeteringHandling efficiency and metered delivery
M15-11Tank Pressure, Temperature, Insulation, Heating & CleaningChemical, food and bitumen transport
M15-12Overfill, Emergency Shut-off, Vapour Recovery & Pressure ProtectionPersonnel, environmental and dangerous-goods safety
M15-13Refrigeration Range, Zones, Unit & RecordingCold-chain stability and traceability
M15-14Silo Volume, Aeration, Filtration & Pneumatic DischargeCement, powder and granular material discharge
M15-15Tipper Body, Volume, Hoist & TailgateOre, gravel, coal and construction materials
M15-16Vehicle / Livestock Decks, Lifts, Ventilation & Water SystemsVehicle loading or animal transport conditions
M15-17Heavy-haul, Modular, Terminal, Municipal & Recovery SystemsSpecial transport and on-site operation capability

100+ specifications represent the maximum range across all vehicle types. Model- and market-specific items appear only when applicable; component families are selected and integrated for each confirmed solution.

Request a custom solution

Tell us the cargo, country and basic operating conditions. You do not need to finish the technical specification yourself.

Have a drawing or reference image? Send it by replying to our first email or directly through WhatsApp.

First response: usually within one working day. This confirms the configuration questions; a final quotation follows once the requirements are clear.

Cargo, payload, road condition, tractor, quantity. Anything you already know.
WhatsApp or email, at least one.

Used only to answer your enquiry. Not shared with third parties.

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