The acceptance standards for mechanical equipment cover six key dimensions (based on national standards and acceptance specifications): ① National Standards (e.g., GB/T 17421.2 for accuracy testing; GB/T 14253 for light industry machinery); ② Appearance and Dimensions (verified against approved drawings); ③ Performance Testing (no-load/rated load); ④ Safety Performance (protective guards/emergency stop/electrical systems); ⑤ Environmental Performance (noise/vibration/emissions); and ⑥ Documentation and Packaging (manuals/certificates of conformity/packaging). Acceptance is conducted based on a dual-standard approach: “Technical Agreement + National Standards.”
I.
National Standard References
Machine Tool Accuracy: GB/T 17421.2 (Testing of positioning accuracy and repeatability of NC axes; source: National Standards Information Platform); Light Industry Machinery: GB/T 14253-2026 (General technical specifications covering safety, functionality, reliability, and environmental protection); Material Handling Machinery: General acceptance specifications for loading and unloading machinery (acceptance conditions, performance, safety, and environmental protection); Packaging Machinery: Safety requirements for packaging machinery (GB 46772-2025); General Safety Principles: GB/T 35076 (Safety design of machinery)—first, determine which national standard applies to the specific equipment (different standards apply to different types of equipment).
II. Acceptance Conditions
Environmental Conditions: Temperature/humidity/power supply (as specified in standards); Equipment Status: Installation complete/commissioning passed; Testing Instruments: Measuring tool precision meets requirements (calibrated via laser interferometer/dial indicator); Personnel: Representatives from both parties present (Buyer + Supplier); Documentation: Technical agreement/approved drawings/inspection standards complete—acceptance will not commence if conditions are not met (non-compliance = invalid result).
III.
Appearance and Dimensions
Consistency: Model/configuration/component brands match approved drawings; Key Dimensions: Overall dimensions/installation dimensions checked against tolerance tables; Material Surfaces: Material type/surface treatment meet specifications; Welds: Visual inspection of welds (porosity/cracks); Coatings: Paint thickness/no peeling or blistering (Sa2.5 surface treatment grade, source: JET list); Fasteners: Bolt torque/anti-loosening measures—appearance and dimensions are the first hurdle in acceptance (immediate rejection if the goods do not match specifications).
IV.
Performance Tests
No-load Test: Operation without load (mechanism movements/speed/travel range); Rated Load: Continuous operation at full load (actual measurement of production capacity/precision); Machining Precision: Test piece machining and inspection (per GB/T precision standards); Functionality: Normal operation of all functional units; Reliability: Continuous operation duration/number of failures—performance testing is the core of acceptance (using the Buyer’s workpieces + contractual acceptance criteria).
V. Safety Performance
Mechanical Safety: Protective guards/light curtains/emergency stop (Source: Acceptance specifications for material handling machinery); Electrical Safety: Grounding/insulation/earth-leakage protection (IEC 60204); Protective Devices: Guarding of moving parts (GB/T 8196); Safety Monitoring: Overload/overspeed protection; Labeling: Warning labels/nameplates—Safety non-compliance results in automatic rejection (failure to meet safety requirements leads to rejection, even if all other items pass).
VI.
Environmental Protection & Documentation
Noise: Within limits (dB measurement); Vibration: Vibration control meets standards; Emissions: Exhaust gas/wastewater/dust meet standards; Energy Efficiency: Energy consumption metrics (energy-saving acceptance); Documentation: Certificate of conformity/inspection report/manual/electrical schematics/spare parts list (Source: MapTrack); Packaging: Intact export packaging/clear labeling—Environmental compliance and documentation are the final two hurdles (missing documentation affects customs clearance and after-sales service).
VII.
Acceptance Process
First, FAT (Factory Acceptance Test): Testing at the manufacturer’s site before shipment; second, Arrival Acceptance: Verification of appearance, quantity, and packaging; third, SAT (Site Acceptance Test): Trial operation after installation; fourth, Rectification & Closure: Re-inspection following the rectification of non-compliant items; fifth, Signing the Acceptance Form: Signatures from both parties mark the start of the warranty period—Machinery acceptance is based on both national standards and the contract agreement;
all items regarding performance, safety, and environmental protection must pass (sequential acceptance checks: appearance → dimensions → performance → safety → documentation).
