A California C-60 Welding license authorizes you to cause metals to become permanently attached, joined, and fabricated using gases and electrical energy that create temperatures of sufficient heat to perform the work. That’s the classification’s exact legal scope under California Code of Regulations, Title 16, Section 832.60, authorized by Business and Professions Code Sections 7008 and 7059. C-60 is a standalone trade license for welding itself, distinct from the classifications — like C-51 Structural Steel — that include welding as one piece of a larger fabrication-and-erection scope. The facts below come from CSLB regulations, statute, and CSLB’s own examination study guide — not marketing copy.
What a C-60 License Actually Covers
The regulation is specific: a welding contractor “causes metals to become permanently attached, joined and fabricated by the use of gases and electrical energy, which creates temperatures of sufficient heat to perform this work” (CCR Title 16 §832.60). CSLB’s own C-60 exam study guide (current for exams scheduled April 1, 2024 forward) breaks the trade into five tested content areas: Planning and Estimating (17%), Welding Preparation (22%), Welding, Brazing, and Soldering (28%), Cutting Processes (11%), and Safety (22%). In practice, C-60 scope includes:
- Job and material preparation — reviewing plans and specifications, identifying metals, and setting up welding equipment and job sites
- Welding, brazing, and soldering — the core joining processes across metal types, plus post-welding procedures
- Cutting processes — setting up and operating cutting equipment, and finishing cut edges to spec
- Standalone metal fabrication and repair — welding work performed as its own contracted scope, not as a subordinate task inside a broader structural or fabrication contract
CSLB’s own sample questions give a sense of the exam’s technical depth: identifying the minimum steel thickness covered by the AWS D1.1 structural steel welding code, calculating material costs from a project’s steel tonnage, and diagnosing excess spatter in flux-cored arc welding (FCAW) by adjusting stickout length. Welding Preparation (22%) covers job-site and equipment setup before the arc or torch is ever struck, while Safety (22%) — tied with Welding Preparation as the second-largest section — covers fire-hazard prevention and personnel protection specific to high-heat metalworking.
Not sure which classification actually fits your work? Our classification finder walks through the scope differences before you commit to an exam.
How C-60 Differs From C-51 and C-13
C-51 Structural Steel is the classification most often confused with C-60 because welding is baked into its definition too: a structural steel contractor “fabricates and erects structural steel shapes and plates… including the riveting, welding, rigging and metal roofing systems necessary to perform this work.” The distinction is scope, not skill. A contractor whose prime contract is fabricating and erecting structural steel members for a building needs C-51, which already authorizes the welding that job requires. A contractor whose prime contract is welding itself — repair welding, fabrication work not tied to erecting structural steel, or standalone welding services — operates under C-60. Many shops that do both hold both licenses.
C-13 Fencing overlaps where ornamental iron fences, gates, rails, and similar fence-related metalwork require welding as part of the installation. That welding is within C-13’s own defined scope when the finished product is a fence, gate, guard rail, or similar fencing structure. C-60 covers welding as its own trade across metals and applications that aren’t tied to a specific structure classification like fencing.
Licensing Requirements: Experience, Bond, and Fees
Experience
CSLB requires four years of journeyman-level, foreman, supervising employee, or contractor experience in welding work within the preceding ten years, and applicants must be at least 18 years of age. Up to three of those years can come from a relevant apprenticeship or trade school, but CSLB requires at least one full year of verifiable hands-on field experience. Claimed experience must be documented (wage records, tax forms, employer certification) per California Code of Regulations §824.
Bond and Fees
Every active license needs a $25,000 contractor’s bond on file (Business and Professions Code §7071.6, raised from $15,000 by Senate Bill 607, effective January 1, 2023 — still current in 2026). If your Responsible Managing Employee holds less than 10% ownership, or you use an RMO arrangement, CSLB also requires a separate $25,000 Bond of a Qualifying Individual.
The application fee is $450 (single classification, non-refundable regardless of outcome). After passing, the initial license fee is $200 for a sole owner or $350 for any other entity, covering the first two-year period; renewal is $450 every two years after that. Live Scan fingerprinting is a separate cost paid to the vendor, typically reported in the $70–$90 range. See current exam-prep pricing if you’re budgeting the whole path to licensure, not just CSLB’s fees.
Workers’ Compensation
Senate Bill 1455 pushed the requirement for every California licensee to carry workers’ comp regardless of employee count back to January 1, 2028. As of 2026, only five classifications are barred from filing a no-employee exemption: C-8 Concrete, C-20 HVAC, C-22 Asbestos Abatement, C-39 Roofing, and C-61/D-49 Tree Service. C-60 isn’t on that list, so a solo C-60 operator with no employees can still file the standard exemption — for now.
The C-60 Trade Exam
The C-60 exam is a separate, closed-book, computer-based test administered through PSI, distinct from the required Law and Business exam every applicant also takes. Per CSLB’s own study guide (current for exams scheduled April 1, 2024 forward), it’s multiple-choice with four options per question, one best answer, no penalty for guessing, and a calculator is provided for the math-based estimating questions. CSLB’s guide breaks content weighting into Planning and Estimating (17%), Welding Preparation (22%), Welding, Brazing, and Soldering (28%), Cutting Processes (11%), and Safety (22%) — CSLB itself calls these figures “approximate” and does not publish an exact question count or passing-score percentage for C-60 specifically, so this article won’t invent one. Reference materials named in CSLB’s own guide include AWS Z49.1 (Safety in Welding, Cutting, and Allied Processes), AWS D1.1 (Structural Welding Code – Steel), and AWS A2.4 (Standard Symbols for Welding, Brazing, and Nondestructive Examination) — useful background reading, though the exam itself is closed-book. Structured, current practice with real content matters more than a rumored percentage — the premise behind Contractor Pathway’s C-60 study guide and practice exams, one of the most competitive CSLB exam-prep programs built for this classification.
Who Needs a C-60 License?
Standalone welding and fabrication shops, mobile welding and repair services, metal fabricators whose contracts are welding-specific rather than tied to structural steel erection, and contractors who want to bid welding-only scope without holding C-51 or another broader metals classification. It’s also common for contractors who already hold a metals-related license — C-51 Structural Steel or C-13 Fencing — to add C-60 so they can legally take welding-only side work outside their primary classification’s defined scope.
Frequently Asked Questions
Do I need C-51 or C-60 to weld structural steel on a jobsite?
It depends on your prime scope. If you’re fabricating and erecting structural steel members, C-51 already authorizes the necessary welding. If your contract is welding-only — not erecting the structural steel itself — C-60 is the applicable classification.
Does welding an ornamental iron fence require C-60 or C-13?
C-13 Fencing covers welding performed as part of fence, gate, and rail installation. C-60 applies when welding is the standalone trade, not subordinate to a fencing contract.
Does C-60 cover brazing and soldering, or just welding?
All three. CSLB’s C-60 study guide groups Welding, Brazing, and Soldering into a single tested content area worth 28% of the exam — the largest single section.
Is the C-60 exam open-book?
No. CSLB’s own C-60 study guide states plainly that it is a closed-book exam — no reference materials are allowed during testing, though a calculator is provided for the math-based estimating questions.
Does the C-60 exam test cutting processes separately from welding?
Yes. CSLB’s study guide breaks out Cutting Processes as its own content area (11%), covering cutting equipment setup, technique, and finishing requirements, separate from the welding/brazing/soldering section.
Getting the classification right is the easy part — passing the exam is where contractors actually get stuck. See how Contractor Pathway’s prep process works, compare pricing for study packages, and if you’re still unsure which classification fits before spending the $450 application fee, reach out and we’ll help you sort it out first.