Construction & Skilled Trades

Prefabrication Pipe Welder - Plumbing & Mechanical Piping

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W.B. Guimarin 1233 Marion St, Columbia, SC 29201
Job typeOther PostedSep 6, 2026 Apply byOct 6, 2026

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About this position

Job Description

Job Description

Build Quality. Build Efficiency. Build Your Career.

W.B. Guimarin & Co. is seeking an experienced Prefabrication Fabricator/Welder to join our growing fabrication team. This position is responsible for fabricating high-quality commercial assemblies for systems that include but are not limited to plumbing and mechanical piping.

The ideal candidate has strong welding and pipe fabrication skills, can read blueprints and spool drawings, and takes pride in producing accurate, high-quality work.

What You'll Do

  • Read and interpret blueprints, fabrication drawings, isometric drawings, and spool sheets.
  • Lay out, measure, cut, bevel, fit, tack, and weld piping assemblies according to project specifications.
  • Fabricate commercial plumbing and mechanical piping systems using carbon steel, stainless steel, copper, PVC, CPVC, and other piping materials.
  • Assemble valves, fittings, flanges, hangers, supports, and mechanical equipment into prefabricated assemblies.
  • Perform MIG, TIG, Stick (SMAW), and other welding processes as required.
  • Operate fabrication equipment including pipe threaders, grooving machines, beveling machines, band saws, ironworkers, grinders, drill presses, forklifts, and overhead cranes.
  • Assemble pipe racks, equipment skids, risers, valve stations, and modular piping systems for field installation.
  • Verify dimensions and quality of fabricated assemblies before shipment.
  • Perform pressure testing or leak testing when required.
  • Work closely with project managers, foremen, and field teams to ensure fabricated assemblies meet project schedules and quality expectations.


Qualifications

  • 3+ years of experience in pipe fabrication, welding, commercial plumbing, pipefitting, or mechanical piping.
  • Ability to read and interpret construction drawings and fabrication prints.
  • Experience with commercial plumbing and mechanical piping systems.
  • Proficiency using shop fabrication tools and welding equipment.
  • Working knowledge of MIG, TIG, and Stick welding techniques.
  • Experience with grooved, threaded, welded, brazed, soldered, and mechanical piping systems preferred.
  • Strong measuring, layout, and fitting skills.
  • Forklift or overhead crane experience is a plus.
  • Ability to work independently while maintaining high-quality standards.

What We're Looking For

  • Detail-oriented and quality-focused
  • Strong mechanical aptitude
  • Safety-minded
  • Team player who communicates well
  • Takes pride in craftsmanship
  • Organized and efficient

Physical Requirements

  • Frequently lift and carry up to 75 pounds.
  • Stand, walk, bend, kneel, crouch, and reach throughout the workday.
  • Safely operate fabrication equipment and power tools.
  • Work in a fabrication shop environment with appropriate PPE.
  • Must have valid SCDL.


Why Join W.B. Guimarin?

  • Competitive hourly pay based on experience
  • Health, Dental, Vision, and Life Insurance
  • 401(k) with Company Match
  • Paid Time Off and Paid Holidays
  • Career advancement opportunities
  • Ongoing training and professional development
  • Stable, growing commercial mechanical contractor

If you're a skilled fabricator who enjoys building high-quality piping systems that help projects succeed, we'd like to hear from you.



“Equal Employment Opportunity Employer – minority/female/veteran/disabled”. We are a Drug-Free Workplace.

Location and commute

1233 Marion St, Columbia, SC 29201.

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How to apply

Review the vacancy and complete the application on the employer or recruitment partner’s website. Requisition ID: WJ-3039287496.