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Six-county Metro Detroit commercial and industrial piping directory

Find Commercial & Industrial Pipefitters in Metro Detroit.

Process piping, steam, boiler, hydronic, medical gas and plant piping contractors across Wayne, Oakland, Macomb, St. Clair, Livingston and Lapeer counties. Get free quotes, check Michigan licenses, and hire with confidence.

207Cities served
8Services
6Metro counties
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Local to Metro Detroit: Detroit, Wayne, Oakland, Macomb and more
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Top pipefitting contractors near you

Top Pipefitters in Metro Detroit

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Before you hire

Hiring pipefitters in Detroit: what to know first

Define the scope first

Share drawings or a line list, the fluid, pressure and temperature, pipe material, and any shutdown window. A clear scope gets you bids you can compare line for line.

Licensing and permits in Michigan

Michigan licenses mechanical contractors by classification, including Hydronic Heating and Cooling and Process Piping. Boilers and their piping need a state boiler installer license and a boiler permit before work starts.

How we check credentials →

Compare more than price

Compare welding procedures and welder qualifications, testing and documentation, safety program, schedule and warranty, not just the bottom line.

Metro Detroit hiring guide

How to compare pipefitting contractors in Metro Detroit

Pipefitters build and repair the piping that carries steam, hot and chilled water, compressed air, gases, chemicals and process fluids in plants, hospitals, schools and commercial buildings. Use this page to pick the right service, request quotes from Metro Detroit piping contractors, and check the licenses and code documentation that matter. Need structural or custom metal welding instead? See welders. Setting pumps and machinery? Compare millwrights. For domestic water, drains and residential gas lines, see plumbers.

Define the work before requesting quotes

Say what the system carries, its design pressure and temperature, pipe material and joining method (welded, threaded, grooved, brazed), and the governing code or owner specification. Note whether the work is new construction, a tie-in to a live system or a shutdown repair, and share drawings, P&IDs or photos.

Michigan licensing and permits

LARA licenses mechanical contractors by classification, including Hydronic Heating and Cooling and Process Piping, HVAC Equipment and specialty classifications such as Fuel Gas Piping. Mechanical work needs a permit from the enforcing agency before it starts, except for minor part replacement. Boilers outside of homes, and their piping, fall under the state Boiler Division: work needs a boiler installer license and a boiler permit, and welding procedures qualified to ASME Section IX must be filed before welding. Medical gas systems fall under the Michigan plumbing code.

What to compare

Ask for welding procedure specifications and welder qualification records, the pressure test and inspection plan, turnover documentation, and the contractor's safety program for hot work and confined spaces. Compare schedules and shutdown plans as closely as price. Then check verification status as described in How We Vet.

Working across Metro Detroit

Contractors serve plants and facilities in all six counties, but permits come from the enforcing agency for the site, which may be the state, the county or the city. In Detroit, mechanical permits and inspections go through BSEED, and the BSEED Boiler Division handles boiler inspections. Browse by city or county, such as Wayne or Macomb.

Common questions

Pipefitters in Detroit: FAQ

Describe the system and scope, request quotes from a few local piping contractors, and compare licenses, welding documentation, safety records and references from similar facilities.
It depends on pipe size and material, footage and number of fittings, joining method, pressure class and testing, access and rigging, shutdown timing, and documentation required by the owner or code. Itemized bids against the same scope are the best way to compare.
Mechanical piping work requires a LARA mechanical contractor license in the right classification, such as Hydronic Heating and Cooling and Process Piping. Boiler and boiler piping work needs a state boiler installer license, and medical gas falls under the plumbing code.
Mechanical work needs a permit before it starts, except for minor part replacement. Boiler installation, alteration or repair, including its piping, needs a boiler permit issued before work begins.
Plumbers mainly handle potable water, drainage and building gas. Pipefitters build heating, cooling, steam, compressed air and process piping, often at higher pressures and temperatures, in commercial and industrial settings.
Yes. Many contractors plan work around scheduled shutdowns with prefabricated spools, extra crews and after-hours shifts. Share your window early so bids reflect it.

Ready to start your piping project?

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