Roundness measurement
Roundness measurement against the method and acceptance limits specified for your part.
BOYA INDUSTRIES / PRECISION & SUPPLY
Quality & Inspection
Steel ball inspection methods, acceptance criteria and quality documentation for material, dimensions, roundness and hardness.
DEFINE. CHECK. DOCUMENT.
Quality begins with an agreed specification.
A grade label alone does not define every acceptance requirement. We coordinate material, dimensions, inspection methods and the documentation requested by your team.
- Review material and dimensional requirements before quotation.
- Agree sampling, measurement methods and reporting needs.
- Discuss material records and batch identification for your order.
INSPECTION EQUIPMENT
Inspection you can see.
Measurement methods, sampling plans and acceptance limits are defined by the product specification.
Metallographic inspection
Microstructure examination with a metallographic microscope, according to the agreed inspection specification.
Hardness testing
Hardness testing equipment. Required scale, test method and limits should be stated in your enquiry.
Dimensional inspection
Precision length measurement equipment for dimensional checks. Measurement capability is confirmed per requirement.
Crushing load testing
Crushing load testing with the test conditions and reporting requirements agreed before supply.
Profile measurement
Profile measurement for reviewing the surface contour against the agreed specification.
DOCUMENTATION CHECKLIST
Specify the records you need.
Tell us which records your team needs for supplier approval and incoming inspection.
01
Material documentation
State the material designation, governing standard and the material document your team needs for acceptance.
02
Inspection records
List the characteristics to be checked, acceptance limits, test methods and any required report format or sampling plan.
03
Batch identification
Explain how the part number, drawing revision and lot identifier should appear on labels and accompanying records.
Add document requirements to your RFQ
List document names and any required format in Additional requirements. Document scope and availability are agreed with the quotation.
MANUFACTURING PARTNER CERTIFICATION
A clear scope. A clearly identified relationship.
These certificates are held by our manufacturing partner. BOYA Industries provides production planning, overseas sales and quality coordination.
ISO 9001:2015
Manufacturing of metal balls and their raw materials, steel wires and ball billets; manufacturing of non-metallic balls (ceramic balls).
- Certification body
- Beijing ZhongRunXing Certification Co., Ltd.
- Issued
- 2024-07-03
- Certificate expiry
- 2027-07-02
Certificate documentation can be discussed with our sales team.
IATF 16949:2016
Production of bearing steel ball.
- Certification body
- AENOR
- Issued
- 2025-03-17
- Certificate expiry
- 2028-03-16
- Exclusion
- Product design
Certificate documentation can be discussed with our sales team.
Certificate dates and scopes were checked against supplied originals on 8 September 2026. Ongoing certification is subject to the certification body’s surveillance and status. Contact sales to discuss the documentation needed for supplier qualification.
Discuss quality documentation ↗