Nelvamar is a Houston based industrial services contractor delivering self performed welding, pipefitting, mechanical, and structural execution for the projects powering America's energy economy.
Nelvamar is an industrial services contractor headquartered in Houston, Texas. We self perform the welding, pipefitting, mechanical installation, and structural work that keeps refineries, petrochemical complexes, LNG export terminals, and power facilities running.
We are not a broker and we are not a labor supplier. Every project Nelvamar accepts is delivered by Nelvamar crews working under a Nelvamar contract, a Nelvamar foreman, and Nelvamar's QA/QC program. That accountability is the reason our clients keep calling us back.
Read our storyEvery scope delivered by Nelvamar craft personnel under direct Nelvamar supervision, in our Houston fabrication shop and on Gulf Coast project sites.
Code qualified SMAW, GTAW, GMAW, and FCAW welding for process piping, structural steel, and pressure retaining components. ASME Section IX and AWS D1.1 qualified.
Process and utility pipe installation, modifications, and tie ins. ASME B31.3 and B31.1 compliant, from layout to hydro to turnover.
Setting, aligning, and tying in rotating and stationary equipment, pumps, compressors, exchangers, vessels, and packaged skids.
Erection of pipe racks, platforms, supports, and equipment foundations to AWS D1.1, with structural welding integrated into the same crew.
Shop fabricated carbon and alloy pipe spools delivered to your site ready for field tie in, schedule driven, traceable, and inspection ready.
Planned outage and shutdown execution, mobilization, scope delivery, and demobilization on tight, accountable windows.
Three reasons owners and EPCs choose us, and three reasons they keep coming back.
Nelvamar maintains its own welders, fitters, millwrights, and ironworkers on payroll. No brokered crews. No surprise subcontractors. The foreman in front of you on Monday is a Nelvamar foreman who works for Nelvamar.
Welder qualification to ASME Section IX. Structural to AWS D1.1. Process piping to B31.3, power piping to B31.1. Documented WPS/PQR packages. NDE coordinated in house. Material traceability to MTRs.
Our project leadership has delivered welding, pipefitting, and mechanical scopes across refineries, LNG terminals, and petrochemical complexes from Brownsville to Lake Charles. We bring that institutional knowledge to every Nelvamar project.
Energy, petrochemical, and heavy industrial, the markets where execution discipline is non negotiable.
Process piping, unit turnarounds, and maintenance for refinery operations.
Olefins, polymers, derivatives, code driven execution for petrochemical assets.
Cryogenic experienced crews for LNG export facilities and gas processing.
Boiler tubes, BOP piping, and outage support for combined cycle and steam plants.
Hydrogen, biofuels, carbon capture, supporting the next generation of industrial assets.
Mechanical and piping execution for heavy manufacturing and process industries.
Send us your scope, drawings, or RFQ. We'll respond with a proposal, fast.
