Quality assurance for custom precision components
Oulin Machinery combines drawing review, machining process control and inspection for aerospace and oilfield service components. Our inspection equipment includes Coordinate Measuring Machines (CMM) and 2D vision measuring systems.
Precision and inspection
Our machining can achieve tolerances as tight as ±0.005 mm. We review the applicable requirements against your drawing, material, component geometry and project specification before production.
Material test certificates (MTC), dimensional inspection reports and other agreed inspection documents can be provided for your project.
- Drawing revision, datum references and critical dimensions.
- Material grade, heat treatment, hardness and surface requirements.
- Inspection scope, reporting format and required documentation.
- Batch traceability and customer-specific requirements, where agreed.
Management system certificates
The certificates below name Changzhou Oulin Auto Parts Co., Ltd., the company represented by the Oulin Machinery brand. They cover the management system scopes stated on each certificate.
ISO 9001:2015 quality management system
Certificate holder: Changzhou Oulin Auto Parts Co., Ltd.
Standard: GB/T 19001-2016 / ISO 9001:2015.
Certificate number: 39326Q01931R001.
Scope: Mechanical components processing.
Issued: September 18, 2026. Certificate expiry date shown: September 17, 2029.
Download the ISO 9001:2015 quality management system certificate (PDF)
ISO 45001:2018 occupational health and safety management system
Certificate holder: Changzhou Oulin Auto Parts Co., Ltd.
Standard: GB/T 45001-2020 / ISO 45001:2018.
Certificate number: 39326S01177R001.
Scope: Occupational health and safety management activities related to mechanical components processing.
Issued: September 18, 2026. Certificate expiry date shown: September 17, 2029.
Download the ISO 45001:2018 occupational health and safety management system certificate (PDF)
The certificates state that continued validity is subject to satisfactory annual surveillance audits.
Documentation for your inquiry
Use the RFQ form to identify CMM inspection, full dimensional inspection, MTC, CoC, heat treatment or hardness reports, traceability and any customer-specific documents you require. The reporting scope is agreed for the individual project.
Share your drawing, material grade, quantity and inspection requirements with our team.