Class Code 3401
Tube Or Pipe Products Mfg; Gate Or Corral Mfg
Class Code 3401 applies to manufacturers who produce tube or pipe products and fabricate gates or corrals. This classification covers shop-based metal fabrication operations such as cutting, forming, welding and finishing; the approved pure premium rate for California effective September 1, 2026 is $4.494 per $100 of payroll. Understanding this code helps employers budget workers' comp costs and target safety controls specific to tubular metal fabrication.
What Class Code 3401 Covers
This classification covers shop-based fabrication and assembly of tubular metal products (tubes, pipes, fittings) and the manufacturing of metal gates, corrals and livestock panels. Typical operations include tube mill or pipe forming, sawing and cutting, roll-forming or bending, notching, threading, punching, MIG/TIG/arc welding, brazing, grinding, drilling, machining, surface treatment (painting, galvanizing) and final assembly and packaging. It includes in-plant fabrication of fence gates, loading chutes, corral panels and similar livestock or property-control products. Work performed on customer sites (installation, erection, site welding) is generally not included under 3401 and is reported under construction/installation classifications instead.
Who It Applies To
- Manufacturers of metal tubes, pipes, and tubular fittings
- Shop fabricators that produce metal gates, corrals, and livestock panels
- OEM suppliers making tubular components for fencing, HVAC, plumbing or structural use
- Welders, tube mill operators and CNC machinists working in the fabrication shop
- Assembly line workers, finishers (paint/galvanize), and material handlers in the plant
Common Job Duties
- Operating tube mills, roll-formers, saws and cutoff machines to size pipe and tubing
- Welding (MIG/TIG/Stick) joints and seams on gates, panels and tubular assemblies
- Bending, notching, threading and fitting tubes to produce gate frames and corral sections
- Grinding, deburring and edge finishing to remove sharp edges from cut tubing
- Machining, drilling and punching attachment points or hinge locations
- Applying coatings—painting, powder coating or hot-dip galvanizing—and final assembly
- Packaging, loading and moving finished gates and panels with forklifts or hoists
Common Injury Risks
Understanding the $4.494 Rate
The approved pure premium rate of $4.494 per $100 of payroll represents the portion of workers' compensation premium allocated to expected claim costs for this class. Insurers multiply that rate by your payroll in hundreds of dollars, then add state assessments, claim adjustment expenses, the insurer's underwriting expense load, and any experience modification or schedule credits to determine the final premium. Employer-specific factors—mix of duties, loss history, safety programs, payroll reporting accuracy and use of subcontractors or installers—can materially change the ultimate price.
Cal/OSHA Compliance Requirements
Cal/OSHA standards that commonly apply include welding, cutting and brazing controls (welding fume and eye protection), machine guarding and lockout/tagout for roll-formers, saws and presses, hazard communication for solvents and coatings, respiratory protection for fume and dust exposures, and noise exposure limits with hearing conservation requirements. Employers should maintain written programs (respirator, hearing, hazard communication), perform exposure monitoring where indicated, and provide PPE and training tailored to shop operations.
How Key HR Helps Employers Under Class Code 3401
A PEO like Key HR helps manufacturers in Class Code 3401 by ensuring accurate payroll classification, managing claims and loss runs, and implementing targeted safety programs (machine guarding audits, welding fume controls, ergonomic material handling). Key HR can provide OSHA-aligned training, return-to-work programs to limit indemnity exposure, and aggregated buying power for workers' comp placement and medical provider networks to help control frequency and severity of claims.
Get a QuoteFrequently Asked Questions
Does Class Code 3401 cover on-site installation of gates at customer locations?
No. 3401 is for shop-based manufacturing and assembly. On-site installation, erection, or construction work is typically reported under construction/installation class codes and may carry different rates and exposures; those hours and payroll should be tracked and reported separately.
What practical steps reduce workers' comp costs for tube and gate manufacturers?
Key steps include machine guarding and LOTO programs, welding fume ventilation and appropriate respirators, cut-resistant gloves and face protection, material handling aids (rollers, hoists) to reduce manual lifting, regular maintenance to prevent equipment failures, safety training specific to tube/piping operations, and a formal return-to-work program to limit lost-time claims.
How do I calculate premium using the $4.494 rate?
Multiply total payroll for employees classified to 3401 (in dollars) by 0.04494 (that is $4.494 per $100) to get the pure premium. For example, $500,000 payroll × 0.04494 = $22,470 pure premium before experience modification, insurer loads, state assessments and any credits or deductibles.
Quick Facts
- Class Code
- 3401
- Classification
- Tube Or Pipe Products Mfg; Gate Or Corral Mfg
- Pure Premium Rate
- $4.494 / $100 payroll
- Effective Date
- September 1, 2026
- Source
- WCIRB Approved Filing
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