Individual manufactured parts
Material, dimensions, appearance and specified features are checked through manufacture and before release. This covers machined components, sheet metal parts and other standalone products.
Quality & certifications
Quality checks for parts and assemblies.
We inspect individual parts and complete assemblies. Explore dimensional inspection, testing equipment, traceability and quality document delivery.
Independent quality control
One part or a complete assembly.
Both are inspected.
Quality checks apply whether a product ships on its own or becomes part of a larger assembly. Inspection points and acceptance criteria follow the product drawing and agreed requirements.
Finished assemblies
Component fit, interfaces and the completed assembly are checked against the drawing. Functional, pressure or leak tests are added where required for that product.
Dimensional Metrology
Controlled measurement. Recorded results.
Dimensions and assembly interfaces are checked against the drawing and inspection plan. Measuring tools are selected for the feature, tolerance and inspection task.
Equipment identification
Measuring resources are registered and identified, with calibration status managed by the quality team.
Calibration management
Scheduled checks, calibration records and maintenance keep measurement resources under control.
Measurement records
Inspection results document the agreed dimensional requirements. Measurement system analysis is planned to match the control plan and customer requirements.
Inspection & testing equipment
Inspection equipment for parts, hoses and assemblies.
Our inspection resources support machined components, fabricated parts, hoses and complete assemblies. Equipment and test methods are selected for the material, product and agreed acceptance criteria.
| Equipment | Model | Inspection application |
|---|---|---|
| Magnetic particle inspection unit | CJX-A | Inspection of suitable ferromagnetic parts for surface and near-surface discontinuities. |
| Fluorescent magnetic particle inspection unit | CJW-2000 | Fluorescent magnetic particle inspection of suitable ferromagnetic components. |
| Rockwell hardness tester | HR-150A | Hardness checks on applicable metal components. |
| Salt spray test chamber | OLT-60C | Corrosion testing of materials and finishes to the agreed method. |
| Servo-controlled tensile testing machine | HD-B604-S | Tensile and pull tests on applicable specimens or assemblies. |
| Temperature / humidity test chamber | R-TS-223S | Environmental testing under specified temperature and humidity conditions. |
| High / low temperature cycling chamber | As specified for the test | Temperature cycling tests matched to the product requirements. |
| Combined water / air test bench | TPU-02-100-2B | Pressure and sealing checks for applicable parts and assemblies. |
| Hydraulic test bench | Product-specific setup | Hydraulic performance checks to the agreed inspection plan. |
Traceability
Quality records with a clear reference.
Product identification and inspection status are managed through documented quality procedures. The order and inspection plan define the traceability and reporting requirements.
Material & component records
Identify supplied materials and components against the order requirements.
Production identification
Use product and batch references to organize production and inspection records.
Inspection status
Record checks and acceptance decisions through manufacture and final inspection.
Delivery documents
Confirm the report references and document package agreed for the order.
Quality Documentation
Reports to support your acceptance.
Our standard delivery includes quality documents prepared to applicable Chinese national standards and the agreed order requirements. The document list and acceptance criteria are confirmed before production.
Quality documents with delivery
The agreed quality documentation is prepared during final and outgoing inspection.
Detailed inspection & test reports
Detailed dimensional inspection and applicable performance test reports are available to the agreed scope. Specify the tests and reporting requirements in your RFQ.
Chinese originals & English translations
Chinese original reports and English translations can be provided on request, with corresponding report references.
Customer-appointed third-party inspection
We welcome inspection by your nominated third-party organization. Inspection scope, timing, access and related arrangements are agreed in advance.
Discuss your inspection and document requirementsCertificate library
Documents behind the capability.
Each certificate applies to its stated activities and scope. Open a copy to inspect the original holder name, terms and validity. Dates below are those printed on the supplied certificates; continued validity is subject to the relevant surveillance requirements.
Quality management
ISO 9001:2015
Design and manufacture of specified rail vehicle body, brake and ventilation components.
- Issuer / certificate
- SGS · CN18/20351
- Valid until, as printed
- 1 September 2027
- Holder on this copy
- Changzhou ZJD Rail Equipment Co., Ltd.
Rail industry management
IRIS Certification
Rolling-stock components: specified body, brake and air-supply products and associated activities.
- Issuer / certificate
- SGS · CN18/20532
- Valid until, as printed
- 1 September 2027
- Holder on this copy
- Changzhou ZJD Rail Equipment Co., Ltd.
Railway welding
EN 15085-2 · CL1
Welding of railway vehicles and components; classification CL1, activity P. Detailed limits are set by the certificate annex.
- Issuer / certificate
- TÜV SÜD · TÜV SÜD/15085/CL1/687/17/3
- Valid until, as printed
- 3 November 2027
- Holder on this copy
- Changzhou ZJD Rail Equipment Co., Ltd.
Automotive quality management
IATF 16949:2016
Production of battery-pack sheet metal parts. Product design is excluded from this certificate scope.
- Issuer / certificate
- AENOR · IATF 0584665
- Valid until, as printed
- 28 September 2028
- Holder on this copy
- Changzhou ZhongJiDa Machinery Co., Ltd.
Environmental management
ISO 14001:2015
Environmental management associated with the specified rail components and energy-storage sheet metal activities.
- Issuer / certificate
- See issuing body on original certificate · 94426E00208R099
- Valid until, as printed
- 26 August 2029
- Holder on this copy
- Changzhou ZhongJiDa Machinery Co., Ltd.
Occupational health & safety
ISO 45001:2018
Occupational health and safety management associated with the specified rail components and energy-storage sheet metal activities.
- Issuer / certificate
- See issuing body on original certificate · 94426S00185R099
- Valid until, as printed
- 26 August 2029
- Holder on this copy
- Changzhou ZhongJiDa Machinery Co., Ltd.
Inspection workflow
Control points from receipt to release.
01 · IQC
Incoming inspection
Check supplied materials and components against the agreed requirements before production.
02 · IPQC
In-process control
Monitor critical dimensions, process steps and assembly interfaces during manufacture.
03 · FQC / OQC
Final & outgoing inspection
Verify the finished work, functional tests and identification. Prepare the agreed quality documents, inspection results and test reports for delivery.
Testing resources
Tests matched to the product.
Available factory checks include temperature, air-tightness, pressure, burst, sealing, tensile and duct-performance testing. The tests, limits and records used for an order are agreed from the drawing and inspection plan.
Let's review your project.
Tell us what you need. Drawings and technical details can follow.