1

Raw Material Incoming & Label Verification
Verify steel coils and their original Mill Test Certificates (MTCs)/labels to ensure full traceability.

2

Laboratory Quality Testing
Perform tests on key metrics (chemical composition, mechanical properties, coating thickness).

3

Test Result Disposition
- QUALIFIED: Released for production with internal traceability labels applied.
- DISQUALIFIED: Immediately quarantined, and a return-to-supplier process is initiated.

4

Processing & Forming
Qualified materials proceed to slitting, roll forming, or other specified manufacturing processes.

5

Finished Product Marking & HDG
Permanently mark formed components (e.g., stamping) followed by Hot-Dip Galvanizing (HDG) treatment.

6

Final Inspection & Packing
Conduct a final inspection and pack finished goods with customized protective packaging for secure shipment.

1. Incoming material inspection

Process: Receive raw material coils with original labels.
Quality Manager's Duty: Review suppliers' quality certificates (e.g., Mill Test Certificates) to confirm full compliance with technical and order requirements.

2. Laboratory test

Process: Perform laboratory tests on raw materials.
Quality Manager's Duty: Audit the effectiveness of suppliers' quality control measures; align quality acceptance criteria with client standards. Oversee the testing process for compliance.

3. Result disposal

Process: Apply internal labels for qualified materials to proceed to processing; quarantine and return disqualified materials to the supplier.
Quality Manager's Duty: Formally raise and record non-conformance decisions during inspection. Conduct root cause analysis for rejected products and manage the return/claim process.

4. Processing and forming

Process: Qualified materials proceed to slitting, roll forming, etc.
Quality Manager's Duty: Monitor key process parameters to ensure adherence to the Quality Control Plan. Propose improvements for processes or operations.

5. Identification and Processing

Process: Permanently mark components and apply treatments like Hot-Dip Galvanizing (HDG).
Quality Manager's Duty: Ensure markings are clear and traceable, and verify that treatment processes like HDG meet standards.

6. Final inspection and report

Process: Conduct final inspection and pack the finished goods.
Quality Manager's Duty: Ensure all final products comply with process and quality requirements. Prepare and submit professional quality analysis reports, regularly reporting on performance and proposing systemic improvements.

Hot-dip galvanizing standard

All hot-dip galvanized components must comply with the requirements of ISO 1461.

Standard for pre-galvanized sheet metal

Pre-galvanized steel sheets must comply with the requirements of EN 10346.

Coating measurement standard

The measurement and verification of zinc coatings (e.g., thickness, adhesion) must be conducted according to the methods specified in ISO 1461.

Routine test items

All products shall undergo the following routine tests:
• Visual Inspection
• Chemical Composition Analysis
• Dimensional Inspection: Length, width, thickness, hole dimensions & locations, threads, etc.
• Mechanical Properties Testing: Yield Strength, Tensile Strength, Elongation.

1. Motor Piles

• Certificate: Must be supplied with an EN 10204 Type 3.1 Material Certificate.
• Compliance: The certificate must confirm compliance with ISO 1461 (galvanizing) and relevant material standards (e.g., S355J0/J2). It must include test results for chemical composition, mechanical properties (Yield Strength, Tensile Strength, Elongation), and coating thickness (per ISO 1461).

2. Standard Piles

• Certificate: Must be supplied with an EN 10204 Type 3.1 Material Certificate.
• Compliance: Same requirements as Motor Piles. The certificate must prove compliance of mechanical properties and galvanizing quality with project specifications.

3.Rotation Shaft

• Certificate: Must be supplied with an EN 10204 Type 3.1 Material Certificate.
• Compliance: Given its critical function, besides routine tests, the certificate must particularly emphasize mechanical properties (e.g., fatigue resistance), hardness, and strict dimensional accuracy. Galvanizing must comply with ISO 1461.

4.Omega Profiles

• Certificate: Must be supplied with an EN 10204 Type 3.1 Material Certificate.
• Compliance: The certificate must verify chemical composition, mechanical properties, and galvanizing quality per ISO 1461. It must also include data on critical cross-sectional dimensions and tolerances.

5. Remaining Components

• Certificate: Must be supplied with an EN 10204 Type 2.2 or Type 3.1 certificate. Type 3.1 is mandatory for critical load-bearing parts.
• Compliance: Certificates must comply with relevant material standards. For sheets, EN 10346 is referenced; for HDG parts, ISO 1461 is required.

6.Fasteners

• Certificate: Must be supplied with an EN 10204 Type 3.1 Material Certificate.
• Compliance: The certificate must clearly state the property class (e.g., Class 8.8, 10.9) and verify mechanical properties and hardness. Any zinc coating must comply with ISO 1461, and the corrosion protection type must be specified.