# API Q1 Certification API Q1 is the quality management specification for the oil and gas sector, and API product licences sit on top of it. A supplier holding Q1 without a product licence cannot monogram, and a page that blurs the two loses a buyer who knows the difference. # API Q1 Certification
API Q1 is the quality management specification for the oil and gas sector, and API product licences sit on top of it. A supplier holding Q1 without a product licence cannot monogram, and a page that blurs the two loses a buyer who knows the difference.
Two things are called "API certified" and they do different jobs. Distinguishing them is the whole of what a supplier page has to get right here. ## Q1 is the system, the licence is the product **API Q1 specifies the quality management system for organisations manufacturing for the petroleum and natural gas industry.** It covers process control, risk assessment, contingency planning, and supplier management, and it is audited by the American Petroleum Institute. **A product licence authorises the monogram on a specific specification**, such as API 6A for wellhead equipment or API 5CT for casing and tubing. The licence is issued per specification and per facility, and Q1 is a precondition rather than a substitute. A shop can therefore hold Q1 and no product licence, which is a real and common position. It can also manufacture to an API specification without either, supplying an unmonogrammed part where the buyer permits it. ## Why the distinction decides quotes A buyer requiring monogrammed product cannot accept an unlicensed supplier, and a buyer requiring only conformance frequently can. **Those are different opportunities and a page that says "API certified" answers neither**, because the reader cannot tell which is being claimed. **A contract manufacturer competes on capability, certification, capacity, and lead time**, and in this sector the certification column has two rows rather than one. Publishing both, separately, is what makes a page filterable. ## How to present it **State Q1 with its certificate number, registrar, and expiry**, then list each product licence with its specification number and the facility it covers. Say plainly whether the shop can manufacture to a specification without monogramming. That sentence prevents a disqualification that was never necessary and almost no supplier page includes it. The wider sector requirements, including NACE MR0175 material compliance, are at [oil, gas, and energy manufacturing](/industries/oil-gas-energy). Where these facts belong on a capability page is at [capability page structure](/content/capability-page-structure), the cluster's reasoning is at [certifications](/certifications), and the programme argument is in [manufacturing SEO](/manufacturing-seo). ## Common questions **Is Q1 required to quote oil and gas work?** Not universally. It is required for monogrammed product and commonly requested otherwise, which makes it valuable well beyond the cases that mandate it. **Does ISO 9001 satisfy an API requirement?** No. Q1 incorporates a similar structure and adds sector requirements, and a buyer asking for Q1 will not accept ISO 9001 in its place. **Can a supplier monogram without a licence?** No, and doing so is a serious misuse of the mark rather than a marketing overstatement. **How often is Q1 audited?** On a defined cycle with surveillance between full audits. Stating the next audit date is unusual and reads as confidence. --- Source: https://manufacturingseo.ai/certifications/api-q1/ Last reviewed: 2026-08-10 Author: ManufacturingSEO.ai