API Q1 vs Q2: Key Differences Every Oil and Gas Supplier Should Know

For companies operating in the oil and gas industry, quality is more than a standard. It is a safety requirement, a contractual expectation, and a competitive advantage. Two of the most widely recognized quality management systems in this space are API Q1 and API Q2. While the American Petroleum Institute develops both, they serve different functions and apply to various segments of the energy supply chain.

At Rolto Quality Solutions, we work closely with Houston-based suppliers and global oilfield service providers to determine which API standard best suits their operations. Understanding the differences between API Q1 and API Q2 is the first step toward building a system that supports compliance, reduces risk, and earns trust from major clients.

What Is API Q1?

API Q1 is a quality management system designed for manufacturers of equipment and components used in oil and gas operations. It builds on the foundation of ISO 9001 and adds critical industry-specific requirements such as:

• Product design and specification control

• Risk assessment and contingency planning

• Purchasing and supplier qualification

• Process validation and inspection

• Nonconformance and corrective action management

API Q1 is most relevant for companies that build, test, and ship equipment such as valves, pumps, fittings, and other pressure-containing products.

What Is API Q2?

API Q2 is a quality management system tailored for service providers in the oil and gas industry. This includes organizations that perform drilling, well servicing, inspection, maintenance, and other field-based operations. API Q2 introduces a stronger focus on operational risk, service delivery planning, and change management.

Key API Q2 elements include:

• Service quality planning and control

• Job execution verification

• Personnel competency and training

• Management of change during service delivery

• Risk assessment for service outcomes

Companies that provide services rather than manufactured goods will typically pursue API Q2 certification.

API Q1 vs Q2: What Are the Key Differences?

While API Q1 and Q2 share the same core principles of quality assurance, risk management, and continuous improvement, they differ in focus and application.

Feature	API Q1	API Q2
Intended For	Manufacturers of oil and gas equipment	Service providers in oilfield operations
Industry Focus	Product design, fabrication, testing	Job execution, service delivery, and change control
Risk Management	Focused on manufacturing process risk	Focused on service delivery and operational risk
Design and Development	Required	Not applicable
Management of Change	Limited to design and manufacturing	Required for field service changes
Personnel Competency	Based on job responsibilities	Emphasized throughout the service cycle

How Rolto Supports API Q1 and Q2 Implementation

At Rolto Quality Solutions, we help companies determine which certification best aligns with their business activities, then guide them through the complete implementation process. Whether you are fabricating components or delivering field services, we provide hands-on support to design a system that works for your team and meets audit requirements.

Our services include:

• API Q1 and Q2 readiness assessments

• QMS documentation and process development

• Root Cause Analysis Services to prevent recurring issues

• Internal audit planning and execution

• Remote Quality Support Services for flexible deployment

• Certification preparation and corrective action coaching

  
  

With over 20 years of quality expertise, we are trusted by clients in Houston and across Texas for Oil and Gas Quality Consulting, system optimization, and long-term compliance support.

Choosing the Right Standard

If your company designs or manufactures products for use in oil and gas operations, API Q1 is likely the best fit for your needs. If your company provides technical or maintenance services, API Q2 is a better option. In some cases, a business may require both depending on its scope.

Our team works with you to map out your operations, assess regulatory and client expectations, and select the most strategic path forward.

Conclusion: Certify with Purpose and Clarity

Choosing between API Q1 and API Q2 is more than a certification decision. It is a strategic move that impacts your operations, reputation, and revenue. At Rolto Quality Solutions, we help oil and gas businesses implement quality systems that are functional, scalable, and audit-ready.

Visit www.roltoqs.com to speak with a quality expert and start building a management system that aligns with your business model and industry demands.

In oil and gas, quality is how you earn your place in the supply chain.