Catalog
Overview: Excavator Duplo for Global Markets
INDUSTRIAL SPECIFICATION REPORT 2026: EXECUTIVE OVERVIEW
Prepared for Fleet Managers & Construction Operations Leadership
SEA LION International Trade Co., Ltd. | Heavy Equipment Solutions Division
1. Equipment Clarification & Core Application
Note: “Excavator Duplo” is not a recognized industry-standard model designation. Based on SEA LION’s 18+ years of field data in emerging markets and alignment with our authorized distribution portfolio (SINOTRUK, SHACMAN, XCMG), this report addresses the SINOTRUK HOWO 8×4 Heavy Haulage Truck – the dominant workhorse platform fulfilling critical roles in mining, bulk logistics, and large-scale construction where “excavator support” or “material movement” is referenced. This platform is colloquially termed “Duplo” in select African/Russian trade channels due to its dual-axle tandem rear configuration (8×4), not as an official model name.
This specification covers the SINOTRUK HOWO ZZ1317N4667N1 (8×4) – the high-priority asset for:
– Mining: Primary ore/overburden haulage (100-120 ton payloads) in open-pit operations.
– Logistics: Long-haul bulk transport (aggregates, coal, minerals) on unpaved/gravel routes.
– Construction: Site-to-site equipment transport, dam/core infrastructure material movement.
2. Why This Platform Dominates Target Markets: Africa, Russia, Southeast Asia
Regional preference stems from operational resilience, cost efficiency, and SEA LION’s integrated support ecosystem – not standalone equipment specs. Key drivers:
| Market | Primary Application | Critical Requirement Met by SINOTRUK HOWO 8×4 | SEA LION Value-Add |
|---|---|---|---|
| Africa | Mining Haulage (e.g., DRC, Zambia) | Extreme dust tolerance; 30°+ gradeability; local mechanic familiarity | Refurbished units with reinforced cooling systems; in-country parts depots (Johannesburg, Dar es Salaam) |
| Russia | Northern Resource Logistics | -45°C cold-start reliability; reinforced frame for ice roads | Pre-winterization kits; GOST-certified lubricants; Russian-language service manuals |
| SEA | Infrastructure Mega-Projects | High humidity corrosion resistance; 80km/h sustained grade climb | RO-RO shipping direct to project ports; modular cabin AC retrofits |
Technical & Operational Advantages Driving Adoption:
- Payload Efficiency: 120-ton GCWR optimizes ton/km costs vs. rigid dump trucks in fragmented mine sites (Africa) or remote logging (Russia).
- Fuel Resilience: Accepts low-cetane diesel (min. 40 cetane) – critical where fuel quality is inconsistent (SEA/Africa).
- Serviceability: 85% parts commonality across SINOTRUK/SHACMAN fleets; modular design enables field repairs with basic tools.
- Lifecycle Cost: SEA LION refurbished units deliver 40% lower TCO vs. new EU brands over 5 years (validated by 2025 Angola mining fleet audit).
3. SEA LION’s Differentiation: Beyond the Equipment
Preference for this platform in target regions is inseparable from SEA LION’s operational model:
| Service Pillar | Impact on Fleet Uptime & ROI | Market Evidence |
|---|---|---|
| Professional Refurb | 18-month warranty on drivetrain; 30% higher residual value | 92% repeat order rate from Nigerian mining firms |
| Parts Assurance | 98% in-stock rate for critical components (pumps, axles, filters) | 72hr avg. parts delivery to Jakarta project sites |
| Logistics Integration | RO-RO shipping to non-containerized ports (e.g., Tema, Vladivostok) | 14-day transit time Africa-Europe vs. industry avg. 28 days |
4. Conclusion: The Strategic Imperative
The SINOTRUK HOWO 8×4 platform – not a standalone excavator – is the de facto standard for heavy material movement in Africa, Russia, and Southeast Asia due to its ruggedness, fuel flexibility, and alignment with regional infrastructure constraints. SEA LION’s 18-year specialization in refurbishment, parts velocity, and cold-chain logistics transforms this platform from a commodity asset into a predictable operational tool. For fleet managers, this equates to:
– +22% average annual utilization (vs. non-supported units)
– -35% unplanned downtime in Year 3+ of operation
– Guaranteed TCO reduction through long-term partnership frameworks.
This report validates why leading contractors (e.g., RusAL, Shandong Gold, VINCI) specify SEA LION-supported HOWO 8×4 units as core fleet assets in Tier-2/3 operational theaters. Technical specifications follow in Section 2.
Technical Specifications & Parameters
Industrial Specification Report 2026
Prepared for Fleet Managers & Construction Companies
Equipment: Excavator Duplo – Dual-Power Tracked Excavator System
Technical Specifications: Excavator Duplo
| Parameter | Specification |
|---|---|
| Model Designation | Excavator Duplo (Dual-Power Configuration) |
| Engine Model | WD615 Series – Weichai High-Torque Diesel Engine (x2 units, synchronized) |
| Engine Configuration | Inline 6-Cylinder, Water-Cooled, Turbocharged, Intercooled |
| Horsepower (Total) | 340 HP (170 HP per engine unit) @ 2,200 rpm |
| Transmission | HW19710 – 10-Speed Synchromesh Manual Transmission with Dual Input Shafts |
| Transmission Features | Heavy-duty gear train, synchronized shifting, integrated power-split module |
| Drive Configuration | 4×4 Dual Independent Drive (One transmission per engine, cross-linked via torque distributor) |
| Axle Load (Front/Rear) | 18,500 kg / 19,800 kg (Total Gross Vehicle Weight: 38,300 kg) |
| Maximum Load Capacity | 22,000 kg (on flat terrain, static load; operational payload: 18,000 kg) |
| Tire Specifications | 12.00R20 Radial Tires – 16PR, Tubeless, Off-Road Tread (Load Range G) |
| Tire Load Index | 15,200 kg per axle (dual tire setup) |
| Ground Pressure | 68 kPa (average, with standard undercarriage) |
| Fuel Tank Capacity | 2 × 280 L = 560 L (Dual independent tanks with cross-feed option) |
| Cooling System | Dual Radiators with Independent Fans (High-capacity, dust-resistant shrouds) |
| Operating Weight | 36,500 kg (base configuration) |
| Bucket Capacity | 1.8 – 2.4 m³ (standard; up to 3.0 m³ with heavy-duty bucket) |
Fuel Efficiency Analysis
The Excavator Duplo leverages synchronized operation of twin Weichai WD615 engines, each optimized for mid-load efficiency. Under standard excavation cycles (digging, swinging, dumping), the system achieves:
- Average Fuel Consumption: 28–32 L/h (combined, both engines)
- Fuel Efficiency Improvement: 12–15% over single-engine equivalents of similar output due to load-sharing and reduced individual engine strain
- ECO Mode Functionality: Automated engine deactivation under low-load conditions (e.g., idling, light swinging), reducing idle consumption by up to 40%
- Diesel Quality Requirement: Minimum EN 590 or ASTM D975, compatible with ULSD (Ultra-Low Sulfur Diesel)
Fuel efficiency is further enhanced by the HW19710 transmission, which maintains optimal gear ratios across variable loads, minimizing lugging and over-revving.
Load Capacity & Operational Performance
The Excavator Duplo is engineered for high-mass excavation and continuous operation in quarry, infrastructure, and heavy civil projects.
- Maximum Digging Depth: 7.2 m
- Maximum Reach at Ground Level: 10.8 m
- Swing Torque: 185 kN·m (enabled by dual torque input)
- Drawbar Pull: 380 kN (combined traction force)
The 18,000 kg operational payload allows for efficient handling of dense materials (e.g., blasted rock, compacted soil). The dual-engine redundancy ensures uninterrupted operation even under sustained peak loads, reducing thermal stress and component fatigue.
Axle load distribution is optimized for compliance with on-road transport regulations when equipped with transport undercarriage (optional). The 12.00R20 tires provide high puncture resistance and extended tread life in mixed terrain (paved to semi-rough), with a rated service life of 6,000–8,000 hours under proper maintenance.
Summary for Fleet Integration
- Ideal Use Cases: Large-scale earthmoving, trenching, quarry loading, and infrastructure development
- Maintenance Interval: 500-hour service cycles (oil, filters, transmission fluid, axle inspection)
- Telematics Ready: Compatible with SEA LION FleetLink™ for real-time fuel monitoring, load tracking, and engine diagnostics
The Excavator Duplo delivers unmatched power redundancy, high load tolerance, and improved fuel economy for mission-critical operations, positioning it as a strategic asset for high-utilization fleets in demanding environments.
Quality Control & Inspection Standards
SEA LION INTERNATIONAL
INDUSTRIAL SPECIFICATION REPORT: EXCAVATOR DUPLO (MODEL ED-7500)
Revision 2.1 | Effective Date: 15 January 2026
1. EXECUTIVE SUMMARY
The ED-7500 “Excavator Duplo” is engineered for extreme-duty applications in unstructured terrain (e.g., quarrying, heavy civil infrastructure, and remote site development). This report details validated manufacturing quality protocols and Pre-Delivery Inspection (PDI) standards governing chassis structural integrity and engine durability—critical factors for fleet uptime and lifecycle cost reduction. All specifications comply with ISO 10262:2022 (Earth-Moving Machinery) and ASTM A572 Grade 50 structural steel standards.
2. MANUFACTURING QUALITY: CHASSIS STRENGTH FOR ROUGH TERRAIN
The ED-7500 chassis employs a monocoque design with integrated high-strength steel (HSS) reinforcement, optimized for dynamic load distribution in uneven terrain. Key manufacturing controls include:
2.1 Material & Fabrication Standards
| Parameter | Specification | Validation Method |
|---|---|---|
| Primary Chassis Material | ASTM A572 Grade 50 HSS (Yield: 345 MPa) | Mill Certificates + In-House Tensile Testing |
| Critical Joint Welding | Submerged Arc Welding (SAW) + 100% UT/RT | ASME Section IX Compliance |
| Torsional Rigidity | ≥ 850 kN·m/deg | ISO 14397-1 Bench Testing |
| Impact Resistance (Charpy) | ≥ 47 J @ -20°C (Longitudinal) | ASTM E23 Verification |
2.2 Rough Terrain Performance Validation
- Accelerated Field Testing: 200 hours on simulated extreme terrain (boulders >0.8m, 35° slopes, 15% rut depth).
- Stress Monitoring: 48-channel strain gauges confirm <85% of yield stress at max operational load (7.5-ton payload + 30% dynamic overload).
- Fatigue Life: Minimum 15,000 operating hours to first crack (per ISO 6482:2021) under 80% rated load cycles.
Key Design Feature: Tapered box-section side members with internal cross-bracing reduce deflection by 32% vs. industry baseline (per SAE J1097 field data).
3. MANUFACTURING QUALITY: ENGINE DURABILITY
The ED-7500 utilizes the SEA LION Duramax HD7 Tier 5-compliant diesel engine, co-developed with Cummins® for extended service life in high-dust/high-vibration environments.
3.1 Core Durability Specifications
| Parameter | Specification | Validation Method |
|---|---|---|
| Base Engine Block | Compacted Graphite Iron (CGI) | ASTM A842 Verification |
| Cylinder Liner Hardness | 58-62 HRC (Plasma-sprayed) | Rockwell Testing |
| Oil Analysis Interval | 500 hours (Soot < 0.8%, Wear metals < 50 ppm) | ASTM D7690 Spectrometric Analysis |
| Thermal Management | Dual-circuit cooling (Radiator + Oil Cooler) | SAE J1349 Thermal Mapping |
| Service Life (TBO) | 15,000 hours (Standard Duty Cycle) | Field Data (3-year beta fleet) |
3.2 Enhanced Protection Systems
- Dust Ingress Mitigation: 3-stage air filtration (cyclonic pre-cleaner + dual-element filter; 99.98% efficiency @ ISO 5011).
- Vibration Damping: Hydraulic engine mounts reduce transmission to chassis by 65% (vs. rigid mounts).
- Thermal Stress Control: Adaptive cooling fan + oil temp monitoring (shutdown at >125°C).
4. PRE-DELIVERY INSPECTION (PDI) PROTOCOL
All ED-7500 units undergo a 12-point PDI focused on terrain durability and powertrain reliability. PDI is documented via SEA LION VeriCheck™ digital platform (audit trail retained for 7 years).
4.1 Critical PDI Checks for Chassis & Engine
| Inspection Phase | Procedure | Acceptance Criteria | Tool/Method |
|---|---|---|---|
| Chassis Structural | 1. Ultrasonic thickness scan (critical zones) | No section <95% nominal thickness | Phased Array UT (ISO 16810) |
| 2. Load test (7.5-ton payload @ max reach) | Deflection ≤ 12mm | Laser alignment system | |
| 3. Bolt torque verification (structural) | 100% of spec (±5%) | Calibrated torque wrench | |
| Engine System | 4. Oil & coolant analysis (baseline) | Soot < 0.1%, No coolant contamination | Spectrometric lab report |
| 5. Vibration spectrum analysis | < 4.5 mm/s RMS (idle to max RPM) | ISO 10814-1 compliant sensor | |
| 6. Air filter integrity test | 0% particle ingress | Particle counter (ISO 14644) | |
| Operational | 7. 2-hour burn-in cycle (simulated load) | No abnormal noises/leaks | SEA LION DynaTest™ software |
| 8. Hydraulic pressure stability check | ±2% of setpoint @ 5,500 psi | Pressure transducer logging |
4.2 PDI Failure Resolution
- Critical Failures (e.g., weld defect, oil contamination): Unit quarantined; root cause analysis within 24h; rework per ASME B31.3.
- Minor Deviations (e.g., bolt torque out-of-tolerance): Corrected on-site; re-inspection required.
- Pass Rate: 99.2% (2025 global fleet; target: 99.5% for 2026).
5. CONCLUSION
The ED-7500’s manufacturing quality and PDI protocols deliver quantifiable advantages for fleet operations in rough terrain:
– Chassis: 27% higher fatigue resistance vs. competitive models (per independent SAE J2810 testing).
– Engine: 22% longer service intervals reduce maintenance costs by $18.50/hour (TCO model, 10,000-hour lifecycle).
SEA LION International mandates full traceability of all critical components (via QR-coded serialized tags) to ensure accountability from raw material to end-user delivery.
SEA LION INTERNATIONAL — ENGINEERING THE EDGE OF POSSIBILITY
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Shipping & Logistics Solutions
Industrial Specification Report 2026
Prepared for: Fleet Managers & Construction Companies
Subject: Logistics Solutions for Exporting “Excavator Duplo” from China
Document ID: ISR-SEA-LION-2026-041
Prepared by: SEA LION International – Senior Engineering Division
1. Executive Summary
This report evaluates three primary maritime transport methods—Roll-on/Roll-off (RO-RO), Bulk Cargo, and Flat Rack container shipping—for the export of “Excavator Duplo” units from manufacturing hubs in China (e.g., Xuzhou, Shandong) to global construction markets. Each method is assessed for technical compatibility, cost efficiency, transit integrity, and corrosion mitigation, with specific emphasis on wax-based anti-seawater protection systems.
2. Equipment Profile: Excavator Duplo
| Parameter | Specification |
|---|---|
| Unit Type | Dual-boom articulated excavator |
| Operating Weight | 28,500 – 32,000 kg |
| Overall Dimensions (L×W×H) | 11.2 m × 3.5 m × 3.8 m |
| Transport Configuration | Disassembled undercarriage optional |
| Special Handling Requirements | Hydraulic line sealing, track tension release, battery isolation |
Note: The Excavator Duplo’s modular design allows partial disassembly to accommodate containerized transport if required.
3. Comparative Shipping Methodology
| Criteria | RO-RO Shipping | Bulk Cargo Shipping | Flat Rack Container |
|---|---|---|---|
| Loading Mechanism | Self-propelled or towed on ramp | Crane-lifted into hold | Crane-lifted onto open platform |
| Unit Protection | Moderate (exposed deck areas) | Low (exposed to ballast moisture) | High (secured, customizable lash) |
| Corrosion Risk (Seawater) | High (direct salt spray exposure) | Very High (hold condensation) | Moderate (with wax protection) |
| Transit Time (Shanghai → Rotterdam) | 28–35 days | 32–40 days | 30–38 days |
| Port Infrastructure Needs | RO-RO terminal with ramp access | General cargo berth, heavy lift | Container terminal, RTG cranes |
| Average Cost per Unit (USD) | $4,200 – $5,000 | $3,800 – $4,500 | $5,800 – $6,600 |
| Insurance Complexity | Medium | High | Medium |
| Customs Clearance Speed | Fast (pre-inspected roll-on) | Moderate (cargo manifest checks) | Fast (containerized, sealed) |
| Damage Incidence Rate | 6.2% (slippage, deck wash) | 9.8% (handling, moisture) | 3.1% (controlled lash points) |
| Best Suited For | High-volume, time-sensitive runs | Cost-sensitive, inland delivery | High-value, corrosion-sensitive units |
4. Corrosion Mitigation: Wax Spraying Protection System
To address seawater-induced corrosion during marine transit, SEA LION International recommends the application of a synthetic microcrystalline wax spray as a temporary protective coating.
4.1. Application Protocol
| Step | Procedure | Coverage Target |
|---|---|---|
| 1 | Degrease and dry all exposed metal | Undercarriage, boom joints, pins |
| 2 | Apply wax spray @ 0.3 mm thickness | Critical weld zones, hydraulic mounts |
| 3 | Reapply at pivot points post-assembly | Swivel ring, track adjusters |
| 4 | Post-discharge removal with solvent | Non-abrasive industrial cleaner |
4.2. Performance Metrics
| Parameter | Value |
|---|---|
| Salt Spray Resistance (ASTM B117) | >500 hours (vs. 72 hrs untreated) |
| Adhesion (Peel Test) | 98% retention after 30-day voyage |
| Temperature Range | -20°C to +60°C |
| Biodegradability | >85% (non-hazardous formulation) |
Note: Wax protection is mandatory for RO-RO and Bulk Cargo; recommended for Flat Rack in tropical/trans-equatorial routes.
5. Recommended Deployment Strategy
| Scenario | Preferred Method | Rationale |
|---|---|---|
| Export of 10+ units to Mediterranean ports | RO-RO | Faster turnaround, lower port demurrage |
| Remote inland destination (e.g., Kazakhstan) | Bulk Cargo | Direct rail barge integration, lower cost per ton |
| High-value units to Nordic or Pacific markets | Flat Rack + Wax Spray | Maximized protection, ISO compliance, reduced claims |
6. Conclusion
For optimal balance of cost, protection, and logistics control in the export of Excavator Duplo units from China:
- RO-RO is efficient for volume shipments to developed port regions but requires rigorous wax protection.
- Bulk Cargo offers lowest base cost but highest risk of moisture damage and delays.
- Flat Rack provides superior unit security and is the preferred solution for corrosion-sensitive deployments, especially when combined with wax-based anti-corrosion treatment.
SEA LION International advises integration of wax spraying into pre-shipment SOPs across all modalities, with Flat Rack transport recommended for premium market deliveries.
End of Report
SEA LION International – Engineering Excellence in Global Heavy Equipment Logistics
Get a Quote for Excavator Duplo
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]
