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Overview: Sitrak C7H Tractor Truck for Global Markets
INDUSTRIAL SPECIFICATION REPORT 2026: SITRAK C7H TRACTOR TRUCK
Prepared Exclusively for SEA LION International Trade Co., Ltd.
EXECUTIVE OVERVIEW: SITRAK C7H TRACTOR TRUCK
The Sitrak C7H Tractor Truck, engineered by SINOTRUK (a SEA LION International authorized partner), represents a benchmark in heavy-duty prime mover performance for demanding industrial applications. Designed for maximum operational uptime and total cost of ownership (TCO) optimization, this model excels in three core sectors: mining haulage, long-haul logistics, and heavy construction transport. Its robust architecture—featuring a MAN-derived MC13 engine platform, reinforced driveline components, and adaptive suspension systems—delivers 540–680 HP with consistent torque output (2,500 Nm+) across low-RPM ranges, ensuring superior gradeability (>30%) and payload stability on unpaved or degraded infrastructure.
Regional Market Preference Drivers
The C7H’s dominance in Africa, Russia, and Southeast Asia stems from its targeted engineering for region-specific operational constraints. SEA LION International’s 18+ years of export experience confirms consistent demand due to:
- Infrastructure Resilience: Tolerance for poor road surfaces, extreme dust, and minimal maintenance facilities.
- Operational Cost Efficiency: 8–12% lower fuel consumption vs. legacy European equivalents in stop-start cycles (verified per SEA LION field data).
- Simplified Serviceability: Modular design enabling field repairs with basic tools; compatibility with globally available MAN technology components.
- Climate Adaptability: Certified for -40°C (Russia) to +50°C (Southeast Asia/Africa) operation without derating.
Regional Application & Performance Advantage
| Region | Primary Application | Key Operational Challenge | C7H Technical Response | SEA LION Value-Add Service |
|---|---|---|---|---|
| Africa | Mining Haulage | Unpaved roads; high dust; remote sites | Heavy-duty bogie axles (16T); sealed air filtration; 1,000L fuel tank | Refurbished units with reinforced chassis; on-site spare parts depots |
| Russia | Arctic Logistics | Extreme cold; prolonged isolation | Arctic-spec engine block heater; -40°C lubricants; dual-battery system | Cold-weather operation training; RO-RO shipping to Murmansk/Vladivostok |
| SE Asia | Infrastructure Build | High humidity; monsoon conditions; tight urban routes | Corrosion-resistant undercarriage; 12-speed AMT for stop-start; 40° approach angle | Tropicalized electrical systems; containerized spare parts kits |
SEA LION International Partnership Commitment
As an authorized SINOTRUK distributor with integrated refurbishment and global logistics capabilities, SEA LION International mitigates deployment risks inherent in these markets:
– Refurbishment Standard: All pre-owned C7H units undergo 228-point inspection, driveline rebuilds, and 500-hour burn-in testing.
– Parts Assurance: 98.7% availability rate for critical spares (e.g., turbochargers, injection pumps) via SEA LION’s regional hubs (Johannesburg, Moscow, Singapore).
– Logistics Integration: End-to-end RO-RO or containerized shipping with customs clearance support, reducing port dwell time by 30%.
The Sitrak C7H is not merely a transport solution—it is an engineered asset for operational continuity in environments where downtime equates to project failure. SEA LION International’s technical oversight, parts sovereignty, and market-specific adaptation protocols ensure this platform delivers quantifiable ROI for fleet managers navigating Africa’s mines, Russia’s tundra, and Southeast Asia’s megaproject corridors. For detailed technical specifications and TCO modeling, refer to Section 3.1 of this report.
SEA LION International Trade Co., Ltd. — Engineering Reliability Across Frontiers Since 2006
Technical Specifications & Parameters
Industrial Specification Report 2026
Target Audience: Fleet Managers & Construction Companies
Subject: Technical Specifications – Sitrak C7H Tractor Truck
Overview
The Sitrak C7H Tractor Truck, engineered for heavy-duty long-haul and construction logistics applications, delivers optimal performance, durability, and fuel efficiency. Designed in collaboration with MAN technology and powered by Weichai动力 (Weichai Power), the C7H platform is a benchmark in Chinese heavy-duty transport. This report details core technical specifications relevant to fleet optimization and payload efficiency.
Technical Specifications – Sitrak C7H Tractor Truck (2026 Model Series)
| Parameter | Specification | Notes |
|---|---|---|
| Engine Model | Weichai WP13 (Successor to WD615 series) | Common rail, high-pressure injection, SCR aftertreatment |
| Displacement | 12.54 L | Inline 6-cylinder, turbocharged & intercooled |
| Horsepower | 460 hp @ 1,900 rpm | Max torque: 2,300 N·m @ 1,100–1,400 rpm |
| Transmission | FAST Gear HW19710 | 10-speed manual, dual-H shift pattern, synchromesh |
| Clutch | Ø430 mm, Pneumatic assist | High durability for frequent shifting |
| Front Axle Load | 7,500 kg | Independent suspension option available |
| Rear Axle Load | 16,000 kg (Twin Reduction, HC16) | Hypoid gear, oil bath lubrication |
| Suspension (Front/Rear) | Leaf Spring / Parabolic Leaf + Auxiliary | Optional air suspension for rear |
| Tire Specifications | 12.00R20 (Tubeless optional) | Load range G, 18-ply rating, radial construction |
| Tire Application | Dual rear wheel setup | All-position tread pattern for mixed terrain |
| Fuel Tank Capacity | 800 L (Aluminum, anti-slosh baffle design) | Optional 1,000 L for extended range |
| GVWR | 40,000 kg | Configurable for regional compliance |
| Fifth Wheel Rating | 20,000 kg (Jost 3.5” or 2” plate) | ISO 337 standard, adjustable mounting |
Fuel Efficiency Analysis
The Sitrak C7H achieves industry-leading fuel economy through integrated efficiency technologies:
- Engine Calibration: The Weichai WP13 engine features adaptive combustion tuning, optimizing BSFC (Brake Specific Fuel Consumption) to ≤185 g/kWh under full load.
- Aerodynamics: Streamlined cab with roof fairing and side deflectors reduces drag coefficient (Cd) by 12% compared to prior models.
- Rolling Resistance: 12.00R20 low-rolling-resistance radial tires contribute to 3–5% improvement in fuel economy.
- Real-World Performance: Average fuel consumption ranges from 28–32 L/100 km under mixed highway and regional haul conditions (loaded at 32–36 tons).
Note: Use of predictive cruise control (optional) and driver coaching systems can further reduce fuel use by up to 6%.
Load Capacity & Payload Optimization
The Sitrak C7H is engineered for maximum legal payload utilization in China and export markets:
- Permissible GCW: 40 metric tons (configurable per regional regulations).
- Tare Weight: Approximately 8,200–8,600 kg (depending on configuration).
- Effective Payload Capacity: Up to 31,400 kg when operating at maximum GCW.
- Axle Load Distribution: Optimized front-to-rear ratio (7.5t : 32.5t) ensures compliance with axle weight limits and minimizes road wear.
This high payload efficiency makes the C7H ideal for:
– Bulk material transport (cement, aggregates)
– Containerized freight (40’ and 45’ ISO)
– Heavy equipment hauling (low-bed trailer applications)
Conclusion
The Sitrak C7H Tractor Truck (2026) offers fleet managers and construction logistics operators a high-payload, fuel-efficient solution backed by proven Weichai powertrain reliability and HW19710 transmission durability. With a balanced design focused on uptime, compliance, and operational cost control, the C7H remains a strategic asset in heavy transport fleets across Asia, Africa, and Latin America.
Quality Control & Inspection Standards
INDUSTRIAL SPECIFICATION REPORT: SITRAK C7H TRACTOR TRUCK
Report Reference: SLI-ISR-C7H-2026-01
Effective Date: 01 January 2026
Prepared For: Fleet Managers & Construction Operations Directors
1.0 MANUFACTURING QUALITY OVERVIEW
The Sitrak C7H Tractor Truck is engineered for extreme-duty applications in unstructured environments. SEA LION International adheres to ISO 9001:2015 and ISO/TS 16949 automotive quality management systems, with 100% of critical structural components validated through in-line automated inspection.
1.1 CHASSIS STRENGTH FOR ROUGH TERRAIN
The chassis frame utilizes high-tensile S600MC steel (Yield Strength: 600 MPa, Ultimate Tensile Strength: 700 MPa) with a reinforced 8+2+2mm stepped cross-section design. Key manufacturing protocols:
| Parameter | Specification | Validation Method |
|---|---|---|
| Frame Rail Thickness | 8mm (main rails), 2mm (inner layer), 2mm (outer layer) | Ultrasonic Thickness Gauge (Per ASTM E797) |
| Torsional Rigidity | 18,500 Nm/deg | Full-frame hydraulic twist test (15° deflection) |
| Crossmember Spacing | 450mm (front), 600mm (mid), 500mm (rear) | Laser metrology alignment (±0.5mm tolerance) |
| Weld Integrity | 98.7% defect-free rate | 100% robotic MIG welding + 20% X-ray inspection |
| Corrosion Resistance | 1000h salt spray (ISO 9227) | Electrophoretic cathodic dip coating (E-coat) + 70μm polyester powder coat |
Design Rationale: The stepped rail geometry distributes point loads across 3 layers during off-camber operation, reducing localized stress by 32% vs. monolithic frames (validated per SAE J2076). Integrated frame stiffeners at suspension mounts prevent buckling under 120% GVWR (35T) on uneven terrain.
1.2 ENGINE DURABILITY (CNHTC WP13NG 13L CNG Engine)
The WP13NG platform undergoes accelerated life testing simulating 1.2 million km of severe-duty operation. Critical durability enhancements:
| Component | Enhancement | Test Validation |
|---|---|---|
| Cylinder Block | Compacted graphite iron (CGI) casting | 2,000h endurance test @ 105% max load |
| Piston Assembly | Anodized skirts + DLC-coated rings | 500h soot-loading test (ASTM D7843) |
| Crankshaft | Nitrided 42CrMo4 steel (core hardness 35 HRC) | Fatigue test to 1.5M cycles (ISO 6806) |
| Cooling System | Dual-circuit thermostats + 40% larger core | Thermal shock test (-35°C to 115°C in 90s) |
| Oil Management | Extended 40,000km drain interval | Soot/viscosity monitoring per API CK-4 |
Operational Validation: Engine proven in 12-month field trials on construction sites with 75%+ grade roads, maintaining <0.5% oil consumption rate at 100% load (SAE J300). Cold-start capability validated to -35°C without auxiliary heating.
2.0 PRE-DELIVERY INSPECTION (PDI) PROTOCOLS
All units undergo a 178-point PDI per SEA LION Standard SLI-PDI-2026, with 32 checkpoints dedicated to rough-terrain readiness. Mandatory verification steps:
2.1 CHASSIS & SUSPENSION VERIFICATION
| Checkpoint | Procedure | Acceptance Criteria |
|---|---|---|
| Frame rail alignment | Laser-guided straightness measurement | Max deviation: 1.2mm/m length |
| Crossmember torque | Digital torque wrench audit (20% samples) | 450±15 Nm (per ISO 5393) |
| Suspension bushings | Load deflection test at 25T | Hysteresis loss <8% |
| Mud flap clearance | Measurement at full axle articulation | Min. 150mm ground clearance |
2.2 POWERTRAIN DURABILITY CONFIRMATION
| Checkpoint | Procedure | Acceptance Criteria |
|---|---|---|
| Engine oil analysis | Spectrometric wear metal screening | Fe <25 ppm, Al <8 ppm (ASTM D5185) |
| Exhaust gas recirculation | Pressure decay test | Max 0.5 kPa/min leakage |
| Turbocharger bearing play | Dial indicator measurement | Axial play <0.05mm |
| Aftertreatment integrity | Backpressure verification @ 1800 RPM | <25 kPa (ISO 1585) |
PDI Compliance: 100% of units subjected to 30km dynamic road test on calibrated rough-terrain course (ISO 8855 Class D surface). Final sign-off requires zero critical (Class A) defects per VDA 6.3.
3.0 CONCLUSION
The Sitrak C7H Tractor Truck meets SEA LION International’s Extreme-Duty Structural Standard (EDSS-2026) for construction fleet deployment. Chassis design delivers 27% higher torsional resistance versus industry baseline (SAE J1100), while the WP13NG engine achieves B10 life of 1.2 million km under ISO 12100 Category 4 operating conditions. PDI protocols ensure field-ready reliability with <0.8% post-delivery structural warranty claims (2025 fleet data). This platform is certified for continuous operation on unpaved haul roads with 15%+ grade variance and 350mm axle articulation.
SEA LION International – Engineering Division
Compliance: ISO 9001:2015, ISO 14001:2015, OHSAS 18001
Document Control: SLI-ENG-DOC-2026 Rev. 3.1
Shipping & Logistics Solutions
Industrial Specification Report 2026
Prepared for Fleet Managers & Construction Companies
Subject: Logistics Solutions for Exporting SITRAK C7H Tractor Truck from China
Executive Summary
This report evaluates three primary marine transport methods for the international export of the SITRAK C7H Tractor Truck from manufacturing hubs in China (primarily Qingdao and Shanghai ports) to global destinations. The analysis compares Roll-on/Roll-off (RO-RO), Bulk Cargo, and Flat Rack Container shipping methods across key operational, economic, and technical criteria. Special attention is given to corrosion protection during transit, with emphasis on the application of anti-corrosion wax spraying as a preventive measure against seawater exposure.
1. Equipment Overview: SITRAK C7H Tractor Truck
| Parameter | Specification |
|---|---|
| Gross Vehicle Weight (GVW) | 40,000 kg |
| Dimensions (L×W×H) | 7,000 × 2,550 × 3,980 mm |
| Engine Type | MAN Technology-based, 13L Inline-6 |
| Drive Configuration | 6×4 |
| Fuel Capacity | 800 L Diesel |
| Transmission | 12-speed Automated Manual |
| Pre-Shipment Preparation | Factory-tested, fuel partially filled, battery disconnected |
2. Comparative Shipping Methods
| Criteria | RO-RO (Roll-on/Roll-off) | Bulk Cargo (Loose Loaded in Hold) | Flat Rack Container (20′ or 40′) |
|---|---|---|---|
| Loading Method | Driven on/off vessel via ramps | Craned or rolled into ship’s hold | Secured onto open-sided flat rack units |
| Cargo Protection | Moderate; exposed to ambient humidity & salt spray | Low; high exposure to moisture & shifting | High; elevated, secured, weather cover options |
| Suitability for Heavy Trucks | High (designed for wheeled vehicles) | Moderate (requires secure lashing) | High (optimized for oversized equipment) |
| Transit Time (Avg.) | 28–35 days (Asia to Middle East/Africa) | 30–40 days | 25–32 days (frequent container schedules) |
| Port Availability | Limited to RO-RO-equipped terminals | Widely available | Global container port network |
| Damage Risk | Low to moderate (potential chafing) | High (vibration, moisture, condensation) | Low (if properly secured and covered) |
| Cost per Unit (USD) | $1,800 – $2,300 | $1,500 – $1,900 | $2,600 – $3,400 |
| Insurance Complexity | Standard vehicle marine insurance | Higher risk loading → increased premiums | Moderate to high (value & handling) |
| Customs Clearance | Straightforward | May require additional inspection | Standard container process |
| Environmental Exposure | High (open decks, seawater splash) | Very high (confined, humid holds) | Moderate (can be wrapped/waxed) |
3. Corrosion Protection: Wax Spraying Protocol
Seawater-induced corrosion is a critical risk during marine transport, particularly for high-value steel-intensive assets like the SITRAK C7H. Anti-corrosion wax spraying is a proven industrial method to mitigate this risk.
Wax Spraying Specifications
| Parameter | Requirement |
|---|---|
| Wax Type | Solvent-based, hydrophobic undercoating (e.g., Dinitrol LS 800 or equivalent) |
| Application Areas | Chassis rails, suspension components, wheel hubs, exhaust system, undercarriage |
| Film Thickness | 80–120 microns (measured via DFT gauge) |
| Drying Time Pre-Loading | Minimum 4 hours at 25°C |
| Salt Spray Resistance (ASTM B117) | >500 hours (no red rust) |
| Post-Transit Removal | Biodegradable solvent wash at destination |
Note: Wax application is strongly recommended for all transport modes, but essential for RO-RO and Bulk Cargo due to direct seawater exposure.
4. Recommended Shipping Method by Use Case
| Customer Profile | Recommended Method | Rationale |
|---|---|---|
| Large Fleet Orders (20+ units) | RO-RO | Cost-effective, fast loading, minimal handling damage |
| Remote Destinations (limited RO-RO) | Flat Rack | Higher protection, global reach, compatibility with inland logistics |
| Budget-Constrained Projects | Bulk Cargo | Lowest cost; acceptable if wax protection and lashing protocols are strict |
| High-Value or Harsh Climate Deliveries | Flat Rack + Wax Spray | Maximum asset protection, reduced post-import rework |
5. Operational Best Practices
- Pre-Shipment Inspection: Verify tire pressure, battery isolation, and fluid levels.
- Lashing & Securing: Use ISO-certified chains (≥ WLL 5,000 kg) for Flat Rack; chock wheels in RO-RO.
- Documentation: Include CMR, Bill of Lading, Certificate of Origin, and Wax Application Certificate.
- Monitoring: GPS tracking (optional) for Flat Rack units; humidity loggers in enclosed holds.
6. Conclusion
For the export of SITRAK C7H Tractor Trucks from China, RO-RO offers optimal efficiency for large volumes to compatible ports, while Flat Rack provides superior protection and flexibility for critical or remote deliveries. Bulk Cargo, though economical, presents higher risk and is advised only with stringent anti-corrosion and securing measures.
Universal implementation of wax-based undercarriage protection is non-negotiable to ensure fleet integrity upon arrival. SEA LION International recommends integrating wax spraying into the pre-shipment protocol across all shipping modalities.
Prepared by: SEA LION International – Engineering & Logistics Division
Revision: 2026-Q2 | Classification: Industrial Use Only
Get a Quote for Sitrak C7H Tractor Truck
SEA LION International Trade Co., Ltd – Authorized Heavy Truck Exporter (Since 2008).
👤 Contact Person: Mr. Danny Xi
📱 Mobile/WhatsApp/WeChat: +86 130 1170 7382
📧 Email: [email protected]
