If you own a welding or fabrication shop and you want to win commercial, public, or structural work, sooner or later the same question lands on your desk: what certifications do we actually need, and which ones are worth the time and money?
It is a confusing space. AISC, IAS, AWS, Clark County, DFCM, ICC-ES, CWB — different acronyms, different agencies, different rules, and a lot of marketing that blurs the line between a certification, a qualification, and a project approval. They are not the same thing, and the difference matters when a building official is deciding whether your steel can ship without a full-time inspector standing in your shop.
This guide breaks down the main certifications available to U.S. fab shops, what each one does for you, how to get them, and how one credential can unlock another. We will use our own path as a working example: our Clark County (Nevada) fabricator certification is what put us on Utah's state DFCM approved-fabricator list.
One disclaimer up front: programs change their fees, timelines, and requirements regularly. Treat the numbers here as ballpark and always confirm current requirements directly with the issuing body. We have linked the official source for every program so you can verify.
First, Understand the Three Things People Call "Certification"
Most of the confusion in this topic comes from lumping three different concepts under one word. Get these straight and the rest of the article makes sense.
1. Welder and procedure qualification (the people and the process)
This is proof that a specific welder, using a specific welding procedure, can lay down a sound weld. It is governed primarily by the AWS D1.1 Structural Welding Code — Steel. Qualification is tied to a welder and a Welding Procedure Specification (WPS), not to your company as a whole.
2. Shop or facility certification (the company)
This is a third party auditing your whole quality management system — your manual, your records, your equipment, your people — and certifying that your facility is capable of producing quality fabricated steel. AISC Certification and IAS accreditation live here. It is address-specific: each shop location is certified individually.
3. Building-official approval as an "approved fabricator" (the project exemption)
This is the one that actually saves you money on the job. Under the building code, structural steel fabricated in your shop normally requires continuous special inspection unless you are an approved fabricator. Only the building official (the authority having jurisdiction) can grant that approval. Holding an AISC or IAS certificate helps you get there, but it is not an automatic pass.
Keep these three buckets separate. When a GC asks if you are "certified," they may mean any of the three. Knowing which one they need is half the battle.
The Code Concept That Drives All of This: IBC 1704.2.5
Almost every fabricator certification ties back to one section of the International Building Code. Under IBC Section 1704.2.5, special inspection of fabricated structural, load-bearing, or lateral-load-resisting members must happen during fabrication — unless the work is done in the shop of an "approved fabricator."
Section 1704.2.5.1 spells out how a shop earns that exemption: the building official reviews your written fabrication procedures and quality control manual, and an approved agency (or the building official) periodically audits your fabrication and QC practices. At the completion of fabrication, the approved fabricator submits a certificate of compliance stating the work was done per the approved construction documents.
Here is the part that trips up a lot of shop owners. There is a widespread belief that an AISC Certified Fabricator automatically gets a pass on shop special inspection. According to the inspection industry, that is not necessarily true: an AISC certificate strengthens your case, but the building official still has to make the approval decision, often after reviewing audit history and unannounced shop inspection reports.
Tip: The practical payoff of being an approved fabricator is real money. Continuous third-party special inspection in your shop is slow and expensive, and the cost usually lands on the project. Approved-fabricator status lets you self-certify with a certificate of compliance instead, which is a genuine competitive advantage when you bid.
AISC Certification
The American Institute of Steel Construction runs the most recognized national quality certification program for the structural steel industry. An AISC certificate tells owners, engineers, and building officials that your facility has the personnel, procedures, and equipment to produce quality steel.
What it covers
- Certification of your quality management system to the AISC 207 Standard for Certification Programs
- Endorsements by scope — for example Building Fabricator (BU), bridge fabricator categories, and erector certification (CSE)
- Optional add-ons like the Fracture Control Endorsement and the Complex Coatings Endorsement
How you get it
- Complete the online application, submit your quality manual and supporting documentation, and pay the fee
- AISC performs an eligibility review, a documentation audit, and a site audit by an authorized audit agency
- Once certified, you are subject to an annual audit, and certification is address-specific — each shop applies separately
What to plan for
AISC states the process typically takes roughly eight to ten months. Note that the Governing Requirements for Certification Programs were updated effective June 15, 2026, and the standard moved to AISC 207-25 — so build your quality system against the current documents. Start at the AISC Certification page and the Applicants page, or call AISC Certification directly.
Tip: Use the AISC audit guide to gap-check your current system before you apply. Most of the timeline is spent building and tightening your QC documentation, not waiting on AISC.
IAS Fabricator Inspection Accreditation
The International Accreditation Service offers an accreditation built directly around IBC Chapter 17. For structural steel it is AC172; for reinforced and precast/prestressed concrete it is AC157.
IAS assesses your management system and verifies that your in-house inspections meet industry standards and IAS criteria. Because the program is tied to the code, it gives building departments a clean, recognized way to verify that a fabricator meets Chapter 17 requirements — which is exactly what you need to skip continuous special inspection in the shop. Maintaining accreditation requires periodic reassessments. Details are at IAS Fabricator Inspection.
Tip: IAS is often the more direct route for shops whose primary goal is the approved-fabricator exemption rather than the broader industry recognition that comes with AISC.
Clark County (Nevada) Approved Fabricator
Clark County, home to Las Vegas, runs one of the better-known local approved-fabricator programs through its Department of Building and Fire Prevention. The legal basis is the same Chapter 17 language: under the Clark County Building Code, special inspection during fabrication is not required when the work is done in the shop of an approved fabricator.
What approval is based on
- Review of your written fabrication procedures and quality control manual
- Periodic auditing of your fabrication and QC practices by an approved agency or the building official
- Submitting a certificate of compliance to the owner for the building official at the end of fabrication
Clark County publishes its approved fabricators and quality assurance agency listings in its commercial permit guidance, such as Building Permit Guide BPG024.
Tip: A county-level approved-fabricator credential is often faster and less expensive to obtain than a national certification, and as you will see below it can carry weight far outside that county.
AWS: The People-and-Process Layer
AWS credentials are not facility certifications, but no fabricator certification holds up without them. They are the foundation every auditor checks first.
AWS D1.1 and welder qualification
D1.1 is the structural welding code referenced in most U.S. building codes and project specs. It defines how welding procedures and welders are qualified and how welds are inspected and accepted. When a building inspector asks for a "certified welder," they usually mean a welder qualified under D1.1 to a specific WPS. Note the distinction the industry draws: a welder is qualified by passing a test to a procedure, and certified when that test is done at an AWS-accredited testing facility. Either way, the employer is always responsible for ensuring its welders are qualified for the work they perform.
Certified Welding Inspector (CWI)
A CWI is an individual credential for the person who inspects and oversees welding — qualifying welders, approving procedures, and judging whether welds meet acceptance criteria. On projects requiring special inspection, a CWI has to observe and document the welding. Not every shop has reliable CWI access, and it is one of the first things a serious GC will ask about.
AWS Certified Welding Fabricator (optional)
AWS also offers a voluntary Certified Welding Fabricator program for companies that want to demonstrate a documented quality management system. It is not required to perform D1.1 work, but it can be a useful credibility marker.
Tip: Before you chase any facility certification, get your welder qualification records and WPS library in order. Auditors for every program above start there, and gaps here are the most common reason shops stall out.
How One Certification Unlocks Another: Our Clark County to DFCM Story
Here is where this gets practical, and where a lot of shop owners miss an opportunity. Certifications are not isolated. A credential earned with one agency is frequently accepted as a qualifying basis by another. Our own experience is a clean example.
To fabricate structural steel for State of Utah projects, you generally have to be on the DFCM Approved Fabricator list — DFCM being Utah's Division of Facilities Construction and Management. In fact, DFCM policy treats approved-fabricator status as a requirement for all structural steel elements on its projects.
You might assume the only way onto that list is a Utah-specific certification. It is not. According to DFCM's requirements for approval, a shop can get on the list by submitting a current certificate of approval from any one of several recognized organizations:
- IAS — International Accreditation Service
- AISC — American Institute of Steel Construction
- CCDDS-BD — Clark County Department of Development Services / Building Division
- CWB — Canadian Welding Bureau
- ICC-ES — International Code Council Evaluation Service
That is the unlock. Our Clark County fabricator certification — backed by our Quality Assurance Program (QAP) and Quality System Manual (QSM) — is an accepted basis for Utah approval. We submitted that certificate along with our quality control manual and our welder and inspector licenses, and we are listed on Utah's 2026 DFCM Approved Fabricator list as a result. One certification, earned in Nevada, opened the door to state work in Utah.
Tip: Before you pursue a new state or jurisdiction, read its approved-fabricator requirements and look at which existing credentials it accepts. You may already hold a qualifying certificate, or be one step away from one that covers several jurisdictions at once. Note that approvals are almost always site-specific — each shop location must be submitted individually — and DFCM renews its list monthly, so you have to keep your paperwork current.
Other Programs Worth Knowing
- NYC DOB Approved Steel Fabricators: New York City runs its own approved-fabricator program; AISC publishes supplemental requirements specific to it. Relevant if you intend to ship steel into NYC.
- CWB (Canadian Welding Bureau): The Canadian counterpart for welding certification, and an accepted basis for approval in some U.S. jurisdictions (including Utah's DFCM list).
- ICC-ES Evaluation: Code-evaluation services from the International Code Council, also recognized by some jurisdictions for fabricator approval.
- NOMMA membership: The National Ornamental and Miscellaneous Metals Association is a professional association, not a code certification. Membership (which we hold) signals industry engagement and gives you access to standards and education, but it does not by itself satisfy any building code requirement. Do not confuse association membership with a code credential.
What Every Program Has in Common
Whatever path you choose, the same handful of fundamentals show up in all of them. Build these and most of the application work is already done:
- A written quality control manual (a QAP/QSM or equivalent) that controls materials and workmanship — this is the single most important document you will produce.
- Documented welding procedures (WPS) and welder qualification records kept current, with continuity records.
- Access to a CWI for inspection and documentation on projects that require it.
- Equipment calibration records for anything that measures or controls a process.
- A willingness to host periodic, sometimes unannounced, audits — the auditing history is what gives a building official confidence.
- Per-location applications — certification and approval are site-specific. Each shop is on its own.
- Time and renewal — budget roughly six to twelve months for a first certification, plus ongoing annual or periodic audits to keep it.
A Starting Checklist for Shop Owners
If you are at the beginning of this, here is a sensible order of operations:
- Get your welders qualified to AWS D1.1 for the processes and positions you actually run, and organize the records.
- Secure reliable CWI access, whether in-house or on contract.
- Write (or have written) a real quality control manual — not a binder that sits on a shelf, but the way your shop actually works.
- Decide your target: the broad recognition of AISC, the code-focused route of IAS, or a local approved-fabricator program like Clark County. Match the credential to the work you are chasing.
- Check the approved-fabricator requirements for every jurisdiction you want to serve, and confirm which credentials each one accepts before you spend money.
- Apply per shop location, then keep the paperwork current — lapsed renewals get you dropped from approved lists.
For related reading on how certifications factor into winning work, see our guide on 10 things to verify before awarding custom steel work in Utah and our overview of what a miscellaneous metals contractor actually builds.
Final Thoughts
Certifications are not a box-checking exercise. Done right, they are a competitive moat: they let you bid work that uncertified shops cannot touch, skip the cost of continuous shop inspection, and prove quality to GCs and building officials before you ever strike an arc. And as our Clark County to DFCM path shows, the credential you earn in one place can carry you into markets you did not expect.
The smart move is to start with the fundamentals every program shares — qualified welders, a real QC manual, CWI access — and then choose the credential that matches the work you want. From there, look for the unlocks.
We are a Clark County certified and Utah DFCM-listed fabrication shop, and we have been through this process. If you are a fab shop owner weighing your options, or a GC trying to confirm a fabricator is properly certified for your project, contact us and we are happy to talk through it.