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Industrial process piping rack with flanged valves and steel manifolds

Chilled-water · Glycol · Mechanical pipe

Process Piping

Mechanical contractors and plant teams call us for piping that gets welded clean, supported right, and tied in on schedule — chilled-water and glycol loops, condenser water, and the supports that carry them.

In short

We weld and install process and mechanical piping — chilled-water, glycol, and hot-water loops, Sch 40 black iron, weld-o-lets, flanged and valved connections, plus pipe supports and hangers — in the shop and in the field.

Cooling and process loops are the backbone of mechanical scope on cold storage, data center, and plant work. The pipe has to be welded to spec, supported correctly, and pressure-ready before it ever sees flow.

We take overflow from mechanical contractors and run defined scope start to finish — and we execute in tight shutdown windows with the system locked out, verified, and safe before we start.

Exterior 4-inch black-iron process piping with flanged valves along a building by Sons of Thunder Welding
1 wk Shutdown tie-in window

Field proof

4" chiller piping, in a one-week window

An MEP contractor brought us in to install and weld 4" Schedule 40 black iron chiller piping tied to a Carrier AquaForce chiller — flanged connections and butterfly valves at the building exterior.

The job ran inside a tight one-week shutdown with the system locked out and tagged out. We verified LOTO, confirmed area safety, executed, and passed inspection on schedule.

  • 4" Sch 40 black iron
  • LOTO-verified shutdown work
  • Passed inspection on schedule

How it runs

How we run process piping

  1. 01

    Site walk & scope

    We walk the run with the mechanical contractor, define the work, and confirm shutdown timing and lockout/tagout.

  2. 02

    Fabricate spools

    Where it speeds the schedule, we fabricate pipe spools and supports in the shop to drop in clean on site.

  3. 03

    Field weld & tie-in

    We field-weld and tie in inside the window, verifying LOTO and area safety before any work begins.

  4. 04

    Test & inspect

    We support pressure testing and inspection and hand the system over ready for service.

Tell us what you're up against.

Send drawings, prints, or photos for your process piping scope — we'll come back with capacity and a fast quote.

Good to know

Process Piping — questions we hear

Do you take overflow piping work from mechanical contractors?

Yes. We take overflow from mechanical contractors and also run defined piping scope start to finish across Northwest Indiana and Chicagoland.

What piping do you weld?

Chilled-water, glycol, and hot-water loops, Sch 40 black iron and carbon steel, weld-o-lets, branch runs, tie-ins, and flanged/valved connections, plus the supports and hangers that carry them.

Can you work inside a shutdown?

Yes. We execute in tight shutdown windows with the system locked out and tagged out, verifying LOTO and area safety before we start.

Do you support pressure testing and inspection?

Yes. We support pressure testing and inspection and hand systems over ready for service.

Let's build it

Send your drawings. We'll quote them fast.

We don't cut corners. We don't ghost jobs. Rapid response across Northwest Indiana, Chicagoland & Southwest Florida.

  • AWS-certified welders
  • OSHA 10/30
  • Insured & bonded