Certified with IATF 16949:2016 and ISO 9001 international quality standards
COTCO METAL WORKS is Thailand’s first fully integrated steel pipe manufacturer certified with IATF 16949:2016 and ISO 9001:2015. UL certified, TIS compliant, and meeting ASTM, BS, and JIS standards.
Both factories of COTCO METAL WORKS have been certified under internationally recognized quality management systems, including:
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IATF 16949:2016 for steel pipe production in the automotive industry
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ISO 9001:2015 for the manufacturing of black steel pipes, galvanized steel pipes, and spiral welded steel pipes
Our steel pipe products are fully certified with Thai Industrial Standard (TIS) and comply with various international standards such as:
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ASTM (United States)
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BS (United Kingdom)
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JIS (Japan)
Additionally, COTCO METAL WORKS has received UL Certification, a globally recognized standard, making us one of only five manufacturers in Thailand to achieve this certification.
Key Certifications and Achievements:
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Certified IATF 16949:2016 for the automotive industry
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Certified ISO 9001 for international quality management
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Green Industry Level 3 Certification from the Ministry of Industry, reflecting our eco-friendly operations
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Accredited testing and research laboratory
Calibration and Testing Details
1. Calibration
Calibration Items & Methods
| Item | Measuring Range | Method | Reference Standard |
|---|---|---|---|
| External Caliper (Digital / Vernier) | 0 mm – 200 mm | In-House (SD-QA-1044) | Based on Gauge Block No. 0403920, No. 040443 |
| >200 mm – 300 mm | In-House (SD-QA-1044) | Based on Gauge Block No. 0403920, No. 040443 | |
| External Micrometer (Digital) | 0 mm – 25 mm | In-House (SD-QA-1044) | Based on Gauge Block No. 0403920 |
| >25 mm – 50 mm | In-House (SD-QA-1044) | Based on Gauge Block No. 0403920 | |
| Steel Ruler | 0 mm – 1,000 mm | In-House (WI-QA-CCM24-04) | Based on 11-20-QC |
| Steel Tape | 0 mm – 5,000 mm | In-House (WI-QA-CCM24-03) | Based on 11-20-QC |
| >5,000 mm – 8,000 mm | In-House (WI-QA-CCM24-03) | Based on 11-20-QC | |
| >8,000 mm – 10,000 mm | In-House (WI-QA-CCM24-03) | Based on 11-20-QC |
2. Tensile Test
Raw Material Type (Sheets):
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CR, HR, GI, EG
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Thickness: 0.25 mm – 4.00 mm
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Method: In-House (WI-QA-005)
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Based on JIS Z 2241:2011
Raw Material Type (Pipes):
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Dimension: 9.60 mm – 45.00 mm
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Thickness: 0.25 mm – 4.00 mm
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Method: In-House (WI-QA-006)
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Based on ISO 6892-1:2009
Note:
Uncertainty (±) at approximately 95% confidence level.
