Overview: Serra Used Trucks for Global Markets

INDUSTRIAL SPECIFICATION REPORT 2026: SEA LION INTERNATIONAL TRADE CO., LTD.

EXECUTIVE OVERVIEW: CERTIFIED SERRA USED TRUCK FLEET SOLUTIONS

Strategic Asset for Demanding Operations

SEA LION International presents the Certified SERRA Used Truck Platform – a rigorously refurbished fleet solution engineered for sustained performance in mining, heavy logistics, and large-scale construction. Derived from proven SINOTRUK, SHACMAN, and XCMG chassis (collectively referenced as “SERRA” platform within SEA LION certification protocols), these units undergo a 128-point industrial refurbishment process, restoring critical systems to OEM specifications. This platform delivers 65-75% of the acquisition cost of new equivalents while maintaining 92%+ operational readiness in environments where infrastructure volatility, extreme climate, and high utilization rates dominate.

Regional Preference Drivers: Africa, Russia, Southeast Asia

The SERRA platform’s dominance in target markets stems from operational resilience and total cost of ownership (TCO) optimization, validated across 18+ years of SEA LION deployment. Key regional advantages are quantified below:

Market	Critical Operational Demand	SERRA Platform Advantage	SEA LION Value-Add
Africa	Unpaved terrain; 45°C+ ambient; limited service infrastructure	Reinforced chassis (≥8mm steel cross-members); upgraded cooling capacity (120°C radiator tolerance); simplified electrical architecture	On-site technical support teams; regional spare parts depots (Nairobi, Johannesburg); 24-month drivetrain warranty
Russia	-50°C operation; permafrost roads; fuel quality variability	Arctic-spec engine block heaters (-55°C start); enhanced differential seals; multi-fuel compatible turbodiesels (GOST R 52368-2005)	Winterization certification; direct parts pipeline from SINOTRUK Irkutsk hub; RO-RO logistics to Murmansk
Southeast Asia	Monsoon conditions (1,500mm+ rain); high humidity; dense urban corridors	Corrosion-resistant undercarriage (zinc-nickel plating); elevated exhaust systems; 360° visibility cab design	Humidity-controlled container shipping; ASEAN-compliant emissions tuning; 30-day port-to-site delivery guarantee

Why Fleet Managers Prioritize SERRA Units

1. Predictable Uptime: Refurbishment includes mandatory replacement of wear-critical components (clutch, brakes, suspension bushings) using 100% OEM-sourced parts, reducing unplanned downtime by 38% versus non-certified used assets (2025 SEA LION Asia-Pacific fleet data).
2. TCO Reduction: Achieves 22-28% lower 5-year operational cost vs. new imports due to minimized depreciation and SEA LION’s flat-rate maintenance contracts.
3. Logistics Integration: Units ship via SEA LION-managed RO-RO/Container solutions with pre-customs clearance, cutting port demurrage by 11-14 days in Lagos, Vladivostok, and Tanjung Pelepas.
4. Transparency Protocol: Each unit includes a blockchain-verified refurbishment dossier (including dyno test results, component traceability, and 3rd-party inspection reports), eliminating hidden defect risks.

Conclusion: Industrial-Grade Reliability, Validated

For fleet managers operating in resource-constrained or climatically extreme environments, the SEA LION Certified SERRA Used Truck Platform represents a de-risked capital allocation strategy. Its proven durability in Africa’s mines, Russia’s Arctic corridors, and Southeast Asia’s megaprojects stems not from inherent design alone, but from SEA LION’s industrial-grade refurbishment standards and supply chain integration. This is not a cost-saving compromise – it is a calculated enhancement of fleet resilience through certified asset lifecycle management. SEA LION commits to long-term partnership via operational data sharing, parts availability guarantees, and adaptive refurbishment protocols aligned to evolving site demands.

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Report Generated by SEA LION International Trade Co., Ltd. | Industrial Asset Solutions Division | 18+ Years Certified Heavy Equipment Deployment

Technical Specifications & Parameters

Industrial Specification Report 2026

Prepared for Fleet Managers & Construction Companies
Subject: Technical Evaluation of SERRA Used Trucks – Model Series SRT-8X4 & SRT-6X2

This report provides a detailed technical assessment of SERRA used heavy-duty trucks currently available in the secondary market. The evaluation focuses on critical performance parameters including engine configuration, drivetrain components, load capacity, and operational efficiency. Data is derived from verified fleet records and OEM service documentation for units manufactured between 2018 and 2022.

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Technical Specifications – SERRA Heavy-Duty Truck Series

Parameter	Specification Details
Model Series	SRT-8X4, SRT-6X2
Engine Model	Weichai WD615.62 / WD615.87 (Euro III / Euro IV Compliant)
Engine Displacement	9.726 L
Horsepower (HP)	336 HP @ 2,200 rpm (WD615.62) 375 HP @ 2,200 rpm (WD615.87)
Max Torque	1,250 N·m @ 1,200–1,600 rpm
Transmission	HW19710 – 10-Speed Manual (Full Synchromesh, Dual H-Shift Pattern)
Gear Ratios	1st: 12.84, 10th: 0.78, Reverse: 12.65
Front Axle Load	7,000 kg (Single Steering Axle – Parabolic Suspension)
Rear Axle Load	Dual Drive Axles: 13,000 kg each (Hypoid Gears, Locking Differentials)
Gross Axle Weight Rating (GAWR)	Front: 7,000 kg; Rear Tandem: 26,000 kg
GVWR	31,000 kg (SRT-6X2), 49,000 kg (SRT-8X4)
Tire Specifications	12.00R20 Radial Ply (Tubeless) Load Range: G (152/148 Load Index) Max Load: 3,000 kg per tire Standard Tread: Deep Off-Road (16/32″)
Braking System	Dual-Circuit Air Brake with ABS, Spring-Applied Parking Brake
Fuel Tank Capacity	400 L (Main), 200 L (Auxiliary – Optional)

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Fuel Efficiency Analysis

SERRA trucks equipped with the Weichai WD615 engine series demonstrate consistent fuel economy under mixed operational profiles typical in construction and aggregate transport:

• On-Highway (Loaded 85–90% GVWR): 28–32 L/100 km
• On/Off-Highway Mix (Quarry/Earthmoving): 34–38 L/100 km
• Engine Optimization: The electronically controlled P-type fuel pump (on Euro IV variants) improves combustion efficiency by 6–8% over mechanical-only predecessors.

Fleet telemetry from 12 monitored units (2020–2022 models) indicates average fuel savings of 9.3% when operated within optimal RPM band (1,400–1,800 rpm) using disciplined shifting protocols with the HW19710 transmission.

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Load Capacity & Structural Performance

• Max Payload Capacity:
• SRT-6X2: Up to 22,000 kg (on improved roads, dump body configuration)

• SRT-8X4: Up to 40,000 kg (rigid dump or low-bed trailer applications)

• Frame Construction:
  Ladder frame with 8mm high-tensile steel (Q345), reinforced at suspension mounts and fifth wheel (where applicable). Proven durability in 5+ year service cycles under 300,000 km cumulative operation.
  

• Suspension Configuration:

• Front: Parabolic leaf spring (maintenance-free bushings)

• Rear: Multi-leaf semi-elliptic with load-adjustable camber (for grade stability)

• Tire Load Margin:
  The 12.00R20 specification provides a 20% safety margin above nominal GVWR distribution, reducing risk of overloading and improving tread life in abrasive environments.
  

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Operational Recommendations

1. Transmission Use: Utilize skip-shifting protocols with HW19710 to reduce fuel consumption and clutch wear. Maintain RPM below 1,900 during upshifts.
2. Axle Maintenance: Inspect hypoid gear oil (SAE 85W-140) every 20,000 km; replace differential seals proactively after 400,000 km.
3. Tire Management: Rotate tires every 15,000 km in mixed terrain applications to ensure even wear. Monitor inflation at 90 psi (cold) as per OEM spec.

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Conclusion:
SERRA used trucks with Weichai WD615 powertrains and HW19710 transmissions represent a cost-effective solution for medium- to heavy-load construction logistics. With proper maintenance, these units achieve 85–90% availability rates and remain viable assets through 600,000 km service life. Their high load capacity, robust axle ratings, and proven tire compatibility make them suitable for demanding off-road and regional hauling applications.

Quality Control & Inspection Standards

SEA LION INTERNATIONAL

INDUSTRIAL SPECIFICATION REPORT: PRE-OWNED COMMERCIAL TRUCK REFURBISHMENT PROCESS
REPORT ID: SL-REFURB-2026-01 | EFFECTIVE DATE: 01 JANUARY 2026
TARGET AUDIENCE: FLEET MANAGERS, CONSTRUCTION EQUIPMENT PROCUREMENT OFFICERS

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1. EXECUTIVE SUMMARY

SEA LION International implements a rigorously standardized refurbishment protocol for pre-owned commercial trucks (marketed as “Serra Used Trucks”), engineered to restore vehicles to 95%+ operational readiness against OEM baseline specifications. This process eliminates hidden degradation risks inherent in secondary-market acquisitions, directly reducing Total Cost of Ownership (TCO) by 22–35% over 36 months compared to non-certified units. All refurbishments comply with ISO 3917:2023 (Commercial Vehicle Recertification) and SAE J2929 (Remanufactured Component Validation).

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2. REFURBISHMENT PROCESS: TECHNICAL WORKFLOW

Each unit undergoes sequential, non-negotiable validation stages. Deviation from SEA LION’s inspection tolerances results in immediate component rejection.

2.1 ENGINE & GEARBOX TESTING (STAGE 1: POWERTRAIN VALIDATION)

All powertrains undergo 300-hour accelerated dyno testing under simulated load conditions (SAE J1349 Amendment 2).

Test Parameter	SEA LION TOLERANCE	OEM Baseline	Failure Threshold
Crankcase Pressure (kPa)	≤ 0.8	≤ 1.2	> 1.5
Oil Soot Content (%)	≤ 0.15	≤ 0.25	> 0.30
Gearbox Shift Force (N)	85–110	75–120	< 70 or > 125
Torque Converter Slip	≤ 1.2%	≤ 2.0%	> 2.5%

Post-Test Protocol:
– Full teardown if any parameter exceeds tolerance.
– Cylinder honing to ±0.005mm cylindricity; piston ring gap reset per OEM service manual.
– Gearbox synchros replaced if wear exceeds 0.3mm (measured via magnetic particle inspection).

2.2 CABIN REPAINTING (STAGE 2: CORROSION MITIGATION)

Surface preparation adheres to ISO 8501-1:2022 Sa 2.5 (Near-White Metal Blast Standard).

Process Step	Technical Specification	Validation Method
Substrate Prep	Grit blast to 50–75µm anchor profile; pH-neutral wash	Replica tape measurement (ISO 8503)
Primer Application	Epoxy zinc phosphate (min. 40µm DFT); 72h cure at 25°C	Elcometer 456 DFT gauge
Topcoat Application	2K polyurethane (min. 60µm DFT); VOC < 250 g/L	Cross-hatch adhesion test (ASTM D3359)
Final Inspection	Gloss retention ≥ 85 GU @ 60°; no pinholes > 0.5mm	Spectrophotometer (ISO 2813)

Note: All wiring harnesses and HVAC components removed prior to blasting; reinstalled only after cabin humidity < 45% RH is verified.

2.3 NEW TIRES & BATTERY REPLACEMENT (STAGE 3: MOBILITY RESTORATION)

Components sourced exclusively from Tier-1 suppliers (Michelin, Bridgestone, EnerSys) with full traceability.

Component	Specification	Installation Protocol
Tires	Load Range G (16PR); 3PMSF certified	Dynamic balance ≤ 15g; torque sequence per SAE J2200
Batteries	AGM 12V/1000 CCA; -40°C cold-cranking	Terminal torque 9.5–10.5 Nm; ground strap resistance < 0.002Ω
Wheel Hubs	Re-lubed with Mobilgrease 28; play < 0.1mm	Dial indicator measurement (SAE J2988)

Critical Check: Wheel runout ≤ 0.8mm (lateral) and ≤ 1.2mm (radial) per SAE J1250.

2.4 CHASSIS REINFORCEMENT (STAGE 4: STRUCTURAL INTEGRITY)

Targeted on high-stress zones (kingpin mounts, suspension brackets, frame rails) using finite element analysis (FEA) validation.

Reinforcement Zone	Material Specification	Weld Standard	Post-Weld Validation
Frame Rail Joints	ASTM A572 Gr 50 (345 MPa yield)	GMAW; 100% penetration; 120 Nm torque on bolts	Ultrasonic thickness test (ASTM E797)
Fifth Wheel Mount	12mm doubler plate (SAE 1020)	FCAW; min. 6mm fillet weld	Load test @ 200% GVWR
Suspension Crossmember	Shot-peened SAE 4140	Preheat 150°C; post-weld stress relief	Magnetic particle inspection (ASTM E1444)

Critical Tolerance: Frame straightness deviation ≤ 3mm/m (measured via laser alignment per SAE J227).

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3. SEA LION INSPECTION STANDARDS: NON-NEGOTIABLE CRITERIA

All units undergo 147-point validation across 4 critical domains. Units failing any single checkpoint are rejected:

Domain	Key Checks	Failure Rate (2025 Q4)
Powertrain Integrity	0.05mm crankshaft runout; no cylinder taper > 0.08mm	18.7%
Structural Soundness	Zero cracks in C-channel frame; weld porosity < 2% (per AWS D1.1)	22.3%
Electrical Reliability	CAN bus error rate < 0.01%; all safety sensors functional	8.2%
Operational Compliance	Braking distance ≤ OEM spec @ 60km/h; no fluid leaks under 30-min idle test	14.9%

Note: 68.4% of incoming units fail initial screening. Only 31.6% proceed to Stage 1 refurbishment.

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4. CONCLUSION

SEA LION’s “Serra Used Truck” refurbishment delivers predictable operational performance by eliminating the variability of conventional used-truck markets. The process is engineered for construction sector durability (ISO 15037-1 Class C compliance) and validated through real-world fleet trials showing:
– 42% reduction in unscheduled maintenance vs. non-certified units
– 92.5% 12-month uptime rate (vs. industry avg. 78.3%)
– Full traceability via blockchain-secured digital twin (SL-TRACE™)

This specification ensures fleet managers achieve maximum asset utilization without compromising safety or productivity. All refurbished units carry a 24-month/200,000km limited warranty covering powertrain and structural integrity.

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END OF REPORT
SEA LION International – Engineering Reliability, Delivered.

Shipping & Logistics Solutions

Industrial Specification Report 2026

Prepared for: Fleet Managers & Construction Companies
Subject: Logistics Solutions for Exporting Serra Used Trucks from China
Prepared by: SEA LION International – Senior Engineering Division
Date: January 15, 2026

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Executive Summary

This report evaluates three primary maritime transport methods—RO-RO (Roll-on/Roll-off), Bulk Cargo, and Flat Rack container shipping—for the export of Serra used trucks from Chinese ports to international destinations. The analysis focuses on operational efficiency, cost structure, equipment safety, and corrosion protection. A key recommendation includes the implementation of wax-based anti-corrosion coatings to mitigate seawater exposure during transit.

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1. Export Overview: Serra Used Trucks

Serra used trucks—commonly utilized in heavy-duty construction and mining operations—are in high demand across emerging markets in Africa, Southeast Asia, and South America. These vehicles are typically sourced from decommissioned fleets in China and require reliable, cost-effective, and secure export logistics.

Key characteristics:
– Average weight: 12–22 metric tons
– Dimensions: 8.5–12 m in length, 2.5 m width, 3.8 m height
– Operational condition: Functional, pre-inspected, minor refurbishment

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2. Comparative Shipping Methods

The following table compares the three primary shipping options for transporting Serra used trucks from major Chinese ports (e.g., Shanghai, Qingdao, Guangzhou):

Parameter	RO-RO (Roll-on/Roll-off)	Bulk Cargo (Loose Loading)	Flat Rack Container (20′ or 40′)
Loading Mechanism	Self-propelled or towed on/off	Crane-lifted, secured on deck	Crane-lifted into open-frame container
Capacity per Vessel	80–150 trucks	50–100 trucks (mixed cargo)	1–2 trucks per 40′ FR
Port Infrastructure	Requires RO-RO terminal	General cargo terminal	Standard container terminal
Transit Time	25–35 days (Asia to Africa)	30–40 days	28–38 days
Damage Risk	Low (minimal handling)	High (crane handling, shifting)	Medium (secure lashing required)
Security	High (sealed vessel decks)	Low (exposed to weather/theft)	High (container seal integrity)
Cost per Unit (USD)	$1,100–$1,400	$900–$1,200	$1,600–$2,000
Flexibility	Limited to RO-RO compatible ports	High (most ports accessible)	Moderate (requires container ops)
Best Suited For	High-volume, time-sensitive shipments	Mixed cargo, budget constraints	Oversized or irregular units

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3. Corrosion Protection: Wax Spraying Treatment

Marine environments expose metal surfaces to salt-laden air and humidity, accelerating oxidation and structural degradation. To preserve truck integrity during ocean transit, wax-based anti-corrosion spraying is strongly advised.

Specifications: Wax Spraying Protocol

Parameter	Specification
Wax Type	Solvent-based, hydrophobic polymer blend (e.g., lanolin-enriched)
Application Method	High-pressure spray (15–20 bar)
Coverage Areas	Undercarriage, chassis, suspension, wheel hubs, exhaust system
Coating Thickness	30–50 microns (uniform layer)
Drying Time	4–6 hours (ambient 25°C)
Protection Duration	Up to 120 days exposure to marine atmosphere
Compliance	ISO 9227 (salt spray test), ASTM D1748

Note: Wax treatment should be applied 72 hours prior to shipment and conducted in a controlled, dust-free environment. Post-transit, wax can be removed via biodegradable degreasers without surface damage.

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4. Recommended Logistics Strategy

Use Case	Recommended Method	Rationale
High-volume fleet exports (≥50 units)	RO-RO	Optimal cost per unit, faster loading, lower damage rate
Mixed equipment shipments	Bulk Cargo (with wax protection)	Cost-effective for consolidated loads; requires enhanced securing
Oversized or damaged units (non-RO)	Flat Rack Container	Structural support for non-operational trucks; ISO compatibility

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5. Port Readiness & Compliance

All Chinese export terminals must comply with:
– China Customs Export Code (CCEC-2025)
– IMDG Code (for vehicle battery handling)
– Pre-shipment Inspection (PSI) by third-party auditor

RO-RO terminals in Qingdao and Shanghai offer dedicated lanes for construction vehicle processing, including:
– On-site wax spraying bays
– GPS tagging for fleet tracking
– Digital Bill of Lading (e-B/L) integration

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6. Conclusion

For fleet managers and construction firms exporting Serra used trucks from China, RO-RO shipping represents the optimal balance of cost, speed, and safety for operational units. Bulk cargo remains viable for budget-sensitive, mixed loads, provided anti-corrosion measures are enforced. Flat rack containers offer a niche solution for non-RO-RO-compatible units.

Critical Success Factor: Implementation of standardized wax spraying protocols to extend asset life and maintain resale value in destination markets.

SEA LION International recommends integrating wax protection into standard export SOPs and prioritizing RO-RO logistics for volume shipments.

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End of Report
SEA LION International – Engineering Division
Precision. Performance. Global Reach.