When importing used excavators from China yards, professional buyers face a fundamental choice: how to interpret machine condition without seeing the unit in person. The ExcaYard grading scale — A, B, and C — provides a standardized framework that translates inspection findings into clear expectations for cost, risk, and lead time. This comparison breaks down each grade across five dimensions so you can align your acquisition strategy with your project requirements.
| Dimension | Grade A | Grade B | Grade C |
|---|---|---|---|
| Condition | Clean, low visible wear, strong operation record | Normal used condition with moderate wear | Working machine needing visible repair or refurbishment planning |
| Typical cost | Highest relative to model year | Mid-range | Lowest acquisition cost |
| Quality risk | Minimal immediate repair | Moderate — planned maintenance likely | Higher — refurbishment budget required |
| Lead time to site | Shortest — often loading-ready | Standard — may require minor servicing | Longer — parts sourcing and repair before shipment |
| Customization | Limited — preserve condition | Moderate — attachments and minor repairs | High — rebuild to spec, repaint, component replacement |
All grades are determined through ExcaYard's 150-point inspection, which covers serial number verification, engine, hydraulics, undercarriage, boom and arm, bucket, cab, electrical system, fluid leaks, and test operation. Deliverables include a photo set, video walkaround, condition grade, repair notes, and loading readiness confirmation. For buyers requiring independent verification, third-party providers such as SGS, Bureau Veritas, and Intertek offer visual inspection, operational tests, component measurement, photo reports, and serial-number confirmation before payment or shipment.
Cost and Value: How the Grades Compare
Grade A machines command the highest price because they require the least immediate intervention. A Hitachi ZX210K in Grade A with low engine hours and undercarriage above 70% remaining will cost more upfront but typically delivers the lowest total cost of ownership over the first 2,000 operating hours. These units often come from rental fleets or single-owner operations with documented maintenance records.
Grade B represents the volume segment of the used excavator market. A Doosan DX225LC or Sany SY215 in Grade B will show moderate wear — perhaps undercarriage at 40–60%, minor hydraulic seepage, or cosmetic damage. The acquisition cost is lower, but buyers should budget for a full service before deployment: hydraulic filters, engine oil, track tension adjustment, and possibly a new bucket cutting edge. For many construction firms in Nigeria, Kenya, or Vietnam, Grade B offers the best balance of price and remaining life.
Grade C machines are working units that need visible repair or refurbishment planning. This is where total cost of ownership becomes harder to predict. A XCMG XE370 in Grade C may require slew bearing replacement, hydraulic pump rebuild, or structural welding on the boom. The low purchase price can be attractive, but buyers must factor in parts availability, local labor rates, and downtime. Grade C is most suitable for dealers with in-house workshops or buyers who can source components at favorable prices.
Lead Time and Logistics by Grade
Lead time varies significantly by grade. Grade A units are typically loading-ready immediately after inspection and payment. ExcaYard supports EXW yard, FOB Shanghai/Tianjin/Qingdao/Ningbo/Guangzhou, CFR destination port, and CIF destination port. FOB gives the buyer control of freight; CIF simplifies shipping but the buyer should review insurance scope and destination charges.
Grade B units may need 3–7 days of servicing before loading. This includes fluid changes, minor hydraulic repairs, and cleaning. For buyers in Latin America — Chile, Peru, Ecuador, Colombia — where shipping routes are longer, the delay is usually absorbed into the voyage time.
Grade C units require the longest lead time. Refurbishment can take 2–4 weeks depending on parts availability and the scope of repair. For large excavators (35+ tons) used in mining and quarry applications, inspection focus includes structural welds, slew bearing, track frame, cooling system, and transport dimensions. A Grade C large excavator may need specialized welding and alignment that adds time and cost.
Documentation and Compliance Across Grades
Regardless of grade, every export shipment from ExcaYard includes a comprehensive document pack: commercial invoice, packing list, bill of lading, certificate of origin, China customs export declaration, inspection report, serial-number photos, and insurance document if CIF. Document names and destination requirements should be confirmed with the buyer's clearing agent.
For Kenya, buyers should check KEBS/PVoC review and Mombasa clearance. Undercarriage condition and maintenance records are critical for Grade B and C machines. In Nigeria, the document pack must align with local customs and standards. Latin American buyers often require Spanish documentation support, which ExcaYard can provide.
The grade itself does not change the documentation requirements, but it affects the inspection report details. Grade A machines typically have clean serial-number photos and straightforward customs declarations. Grade C machines may require additional repair notes and refurbishment documentation to satisfy import regulations.
Machine Class Considerations
Grading applies differently across machine classes. Mini excavators (1–8 tons) used in urban work, landscaping, and utility trenching have inspection focus on hydraulic leaks, swing play, track wear, and attachment pins. A Grade A mini excavator is often a low-hour unit from a rental fleet. Grade B may show track wear but remain fully operational. Grade C could need new tracks and hydraulic hose replacement.
Medium excavators (20–30 tons) are the most common export class. Inspection focus includes engine hours, undercarriage percentage, hydraulic pump pressure, and boom and arm cracks. Popular models for export include Hitachi ZX120, ZX210K, ZX240, ZX350, ZX470; Doosan DX225LC, DX300LC, DX380LC, DH225LC, DH420LC; Sany SY215, SY365; XCMG XE215, XE370. Buyers comparing lower acquisition cost and newer machine years often consider Chinese-brand used excavators like Sany and XCMG.
Large excavators (35+ tons) for mining, large earthmoving, quarry, and heavy infrastructure require the most rigorous grading. A Grade A large excavator with verified structural integrity is a premium asset. Grade C large excavators are typically purchased by dealers or mining companies with maintenance capabilities.
Who Should Pick What
Grade A is best for buyers who prioritize uptime and predictable costs. Construction firms with tight project schedules, rental fleets needing immediate deployment, and buyers in markets with high downtime costs should choose Grade A. The higher upfront price is offset by lower repair risk and faster lead time.
Grade B suits buyers who want a balance of cost and condition. Equipment dealers, general construction companies, and buyers with access to local parts and service should consider Grade B. It offers the widest selection and reasonable remaining life.
Grade C is for buyers with refurbishment capabilities. Dealers with workshops, mining companies with maintenance teams, and buyers in markets with low labor costs can extract value from Grade C. It requires careful planning and a clear refurbishment budget.
ExcaYard provides transparent grading backed by the 150-point inspection and optional third-party verification. By understanding the A, B, C system, buyers can make data-driven decisions that align with their operational and financial goals.