API 20F Approved Manufacturers: How to Verify and Select Suppliers

Introduction

In the oil and gas industry, fastener integrity is critical to preventing leaks and catastrophic failures. The American Petroleum Institute (API) has developed several standards to ensure the quality and reliability of fasteners used in pressure-containing equipment. Among these, API 20F specifically addresses the qualification and certification of fastener suppliers for the petroleum and natural gas industry. This article provides a comprehensive guide for procurement engineers and project managers on how to verify API 20F compliance, understand the differences between API 20F and API 20E, and select qualified suppliers.

What is API 20F Certification?

API 20F, titled “Qualification and Certification of Fastener Suppliers for the Petroleum and Natural Gas Industry,” was first published in 2017. It establishes requirements for the qualification, certification, and management of fastener suppliers. The standard covers all types of fasteners, including stud bolts, hex bolts, nuts, and washers, used in pressure-containing equipment such as flanges, valves, and fittings.

Key elements of API 20F include:

• Quality Management System (QMS): Suppliers must have a documented QMS that meets the requirements of API Q1 or ISO 9001, with additional requirements specific to fastener manufacturing.
• Product Qualification: Fasteners must be manufactured and tested according to applicable ASTM, ASME, or other industry standards. This includes material traceability, mechanical testing, and dimensional inspection.
• Facility and Process Audits: API conducts initial and periodic audits of the supplier's manufacturing facilities to ensure compliance with the standard.
• Personnel Competence: Key personnel must be qualified and trained in fastener manufacturing and quality control.
• Traceability and Documentation: Suppliers must maintain full traceability from raw material to finished product, and provide documentation such as material test reports (MTRs) and certificates of compliance.

API 20F certification is voluntary but increasingly required by operators and engineering contractors for critical service applications. It provides assurance that the supplier has robust processes in place to consistently produce high-quality fasteners.

List of API 20F Approved Manufacturers

It is important to note that API does not publish a public list of API 20F certified suppliers. However, procurement engineers can verify a supplier's certification by requesting a copy of their API 20F certificate, which includes the supplier's name, facility location, scope of certification, and expiration date. Additionally, API maintains a Monogram Program database for API Q1 and API Spec Q2, but API 20F is not part of the Monogram Program. Therefore, verification must be done directly with the supplier or through API's certification database (if available).

When evaluating suppliers, look for those that have been certified by accredited third-party certification bodies, such as DNV, LRQA, or ABS. These certifications are typically valid for three years, with annual surveillance audits.

How to Verify API 20F Compliance

Verifying API 20F compliance involves several steps:

1. Request the Certificate: Ask the supplier for a copy of their API 20F certificate. Ensure the certificate includes the correct company name, facility address, scope of certification (e.g., “Stud Bolts, Hex Bolts, Nuts”), and the certification body's logo.
2. Check the Scope: The certificate should clearly state the types of fasteners covered. If your project requires specific grades (e.g., ASTM A193 B7, B16, or A320 L7), confirm they are within the scope.
3. Verify with the Certification Body: Contact the certification body listed on the certificate to confirm its validity. Most certification bodies have online databases where you can check the status of a certificate.
4. Review Audit Reports: Request summary audit reports or proof of surveillance audits. A compliant supplier should have no major non-conformities.
5. Assess Documentation: Review sample documentation, such as material test reports (MTRs) and certificates of compliance, to ensure they meet API 20F requirements for traceability and accuracy.

Additionally, you can perform a site audit if the supplier is critical to your project. This allows you to verify their QMS, manufacturing processes, and quality control firsthand.

Key Differences Between API 20F and API 20E

API 20E and API 20F are both fastener standards, but they serve different purposes:

In practice, many suppliers hold both certifications. API 20E focuses on the product itself, while API 20F focuses on the supplier's ability to manage quality. For critical applications, it is advisable to require both.

Selection Criteria for Procurement Engineers

When selecting an API 20F approved supplier, consider the following criteria:

• Certification Validity: Ensure the supplier's API 20F certificate is current and covers the required fastener types.
• Experience and Track Record: Look for suppliers with a proven history of supplying to similar projects (e.g., offshore, refinery, chemical).
• Material Sourcing: Verify that the supplier uses reputable mills and maintains full material traceability.
• Testing Capabilities: The supplier should have in-house or contracted testing for mechanical properties, hardness, impact, and NDE (e.g., MPI, UT).
• Lead Times and Capacity: Assess whether the supplier can meet your project schedule and volume requirements.
• Documentation: The supplier should provide comprehensive documentation, including EN 10204 3.1 certificates, MTRs, and traceability records.
• Compliance with Additional Standards: If your project requires NACE MR0175/ISO 15156, PED 2014/68/EU, or other standards, confirm the supplier can meet these.
• Cost: While cost is important, it should not be the sole factor. Balance cost with quality and reliability.

By following these criteria, you can select a supplier that meets both technical and commercial requirements.

LOKRON Solution

At LOKRON, we understand the importance of compliance and quality in fastener supply. While we are not API 20F certified, we hold PED 2014/68/EU (Category IV, Module H), ISO 9001, and IATF 16949 certifications. Our fasteners are manufactured to ASTM, DIN, EN, and ISO standards, and we provide full EN 10204 3.1 documentation. For projects requiring API 20F compliance, we recommend verifying supplier certifications as outlined above. For other critical applications, our certified fasteners offer a reliable alternative.

Frequently Asked Questions

Q1: Is API 20F certification mandatory?

No, API 20F is voluntary. However, many oil and gas operators and engineering contractors require it for critical service fasteners.

Q2: Can a supplier have API 20F without API 20E?

Yes, API 20F certifies the supplier's quality management system, not the product. A supplier can be API 20F certified while manufacturing fasteners to other standards (e.g., ASTM, ASME).

Q3: How long is API 20F certification valid?

Typically three years, with annual surveillance audits. The certificate must be renewed before expiration.

Q4: What is the difference between API 20F and ISO 9001?

ISO 9001 is a general quality management standard, while API 20F includes additional requirements specific to fastener manufacturing, such as product qualification, traceability, and personnel competence.

Q5: How do I find API 20F approved manufacturers?

API does not publish a public list. You must request certification documents from suppliers and verify with the certification body.

Summary

API 20F certification is a key indicator of a fastener supplier's commitment to quality and reliability. By understanding the standard, verifying compliance, and applying rigorous selection criteria, procurement engineers can ensure they source fasteners that meet the demanding requirements of the oil and gas industry. While API 20F is not mandatory, it provides an extra layer of assurance for critical applications.