Company lists · Data refreshed September 2026

Top 25 Onshore pipeline contractors based in the United States

Name: Onshore pipeline contractors based in the United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 1,196 companies tracked

RevenueBase identified 1,196 onshore pipeline contractors headquartered in the United States as of September 2026 and tracks 47,701 professional contacts across them, including 13,696 with verified work emails. Houston is the largest hub.

This list covers onshore pipeline contractors headquartered in the United States, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

1,196Companies

47,701Contacts tracked

13,696Verified emails

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The 25 largest onshore pipeline contractors based in the United States

Ranked by team size

Top 25 of 1,196 onshore pipeline contractors based in the United States, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to onshore pipeline contractors: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Team, INC	Indirect evidence	Sugar Land, TX, United StatesHQ checked Sep 17, 2026	5,001-10,000	3,460 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
2	Entrust Solutions Group	Partial evidence	Lisle, IL, United StatesHQ checked Sep 17, 2026	1,001-5,000	2,966 contacts →
	Partial evidence “ENTRUST Solutions Group, an ENR Top 100 company, provides comprehensive and dependable engineering, consulting, and automation services to pipeline companies, gas and electric…” Source: RevenueBase Database · checked Sep 17, 2026
3	Quanta Services, INC	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	10001+	1,783 contacts →
	Partial evidence “Quanta Services (NYSE: PWR) is the leading specialty contractor with the largest and highly trained skilled workforce in North America, providing fully integrated solutions for…” Source: RevenueBase Database · checked Sep 17, 2026
4	T.D. Williamson	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 17, 2026	1,001-5,000	1,618 contacts →
	Indirect evidence “T.D.” Source: RevenueBase Database · checked Sep 17, 2026
5	NPL Construction CO	Indirect evidence	Phoenix, AZ, United StatesHQ checked Sep 17, 2026	5,001-10,000	1,358 contacts →
	Indirect evidence “NPL is a nationally recognized leader in energy infrastructure construction, with 50 years of experience.” Source: RevenueBase Database · checked Sep 17, 2026
6	Percheron, LLC	Indirect evidence	Katy, TX, United StatesHQ checked Sep 17, 2026	501-1,000	776 contacts →
	Indirect evidence “Percheron streamlines energy infrastructure projects through a comprehensive EPCM (Engineering, Procurement, Construction Management) approach.” Source: RevenueBase Database · checked Sep 17, 2026
7	Tulsa Inspection Resources, LLC	Indirect evidence	Tulsa, OK, United StatesHQ checked Sep 17, 2026	1,001-5,000	770 contacts →
	Indirect evidence “Core capabilities include: Inspection Services (Chief, CWI, NACE/AMPP, Utility, Environmental, Safety, Poly, etc), Non-Destructive Examination (Ultrasonic Testing (UT), Phased…” Source: RevenueBase Database · checked Sep 17, 2026
8	Precision Pipeline, LLC	Strong evidence	Eau Claire, WI, United StatesHQ checked Sep 17, 2026	1,001-5,000	737 contacts →
	Strong evidence “As the first pipeline contractor designed to work within today's stringent pipeline construction parameters, Precision Pipeline is the next generation pipeline contractor.” Source: RevenueBase Database · checked Sep 17, 2026
9	WHC Energy Services	Strong evidence	Broussard, LA, United StatesHQ checked Sep 17, 2026	n/a	736 contacts →
	Strong evidence “WHC - A Surerus Murphy Company, is a privately held general contractor who provides construction services for renewable services, pipeline and related facilities to the oil and…” Source: RevenueBase Database · checked Sep 17, 2026
10	Willbros	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	10001+	665 contacts →
	Partial evidence “Primoris is a specialty energy infrastructure contractor serving the oil and gas and power industries with offerings that primarily include construction, maintenance and…” Source: RevenueBase Database · checked Sep 17, 2026
11	GIS	Indirect evidence	Galliano, LA, United StatesHQ checked Sep 17, 2026	1,001-5,000	612 contacts →
	Indirect evidence “Established in 1948 in Grand Isle, LA, GIS began as a modest company serving the commercial fishing industry.” Source: RevenueBase Database · checked Sep 17, 2026
12	Applied Consultants	Indirect evidence	Longview, TX, United StatesHQ checked Sep 17, 2026	501-1,000	578 contacts →
	Indirect evidence “Since 1991, Applied Consultants Inc.” Source: RevenueBase Database · checked Sep 17, 2026
13	Infrasource, A Quanta Services Company	Partial evidence	King Of Prussia, PA, United StatesHQ checked Sep 17, 2026	1,001-5,000	552 contacts →
	Partial evidence “As one of the nations largest underground specialty contractors, InfraSource has over employees strategically positioned across more than 20 operating centers.” Source: RevenueBase Database · checked Sep 17, 2026
14	Troy Companies	Partial evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	529 contacts →
	Partial evidence “Troy has been serving the pipeline industry by providing safe and efficient pipeline construction and maintenance for more than 70 years.” Source: RevenueBase Database · checked Sep 17, 2026
15	E2 Consulting Engineers, INC	Indirect evidence	Emeryville, CA, United StatesHQ checked Sep 17, 2026	501-1,000	526 contacts →
	Indirect evidence “Dedicated to “Excellence in Engineering,” E2 Consulting Engineers, Inc.(E2) is a professional services firm established in 1988 specializing in a full spectrum of engineering…” Source: RevenueBase Database · checked Sep 17, 2026
16	Quality Integrated Services, Inc. QIS	Indirect evidence	Guymon, OK, United StatesHQ checked Sep 17, 2026	1,001-5,000	524 contacts →
	Indirect evidence “We’ve been a leader in the inspection and construction industry for over 25 years.” Source: RevenueBase Database · checked Sep 17, 2026
17	Loenbro	Indirect evidence	Westminster, CO, United StatesHQ checked Sep 17, 2026	1,001-5,000	504 contacts →
	Indirect evidence “Loenbro is a trusted, long-term construction lifecycle partner to thousands of customers across the U.S.” Source: RevenueBase Database · checked Sep 17, 2026
18	Express Energy Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	501-1,000	379 contacts →
	Indirect evidence “Express Energy Services, a leading oilfield services company, is active in every major hydrocarbon basin in the United States and is a premier provider of products and services…” Source: RevenueBase Database · checked Sep 17, 2026
19	Southeast Connections LLC	Partial evidence	Conyers, GA, United StatesHQ checked Sep 17, 2026	1,001-5,000	374 contacts →
	Partial evidence “Since 1996 Southeast Connections, LLC is a contractor specializing in energy infrastructure serving the gas industry.” Source: RevenueBase Database · checked Sep 17, 2026
20	Sunland Construction, Inc. And Affiliates	Indirect evidence	Eunice, LA, United StatesHQ checked Sep 17, 2026	1,001-5,000	364 contacts →
	Indirect evidence “Our Mission: To be the premier provider for energy related construction services through a commitment to excellence in safety, production, and quality, with the resolve to…” Source: RevenueBase Database · checked Sep 17, 2026
21	Underground Construction Co., INC	Indirect evidence	Benicia, CA, United StatesHQ checked Sep 17, 2026	1,001-5,000	328 contacts →
	Indirect evidence “Underground Construction Co, Inc, headquartered in Benicia, California, has provided quality gas, power, airport fueling and telecom construction services for over 90 years.” Source: RevenueBase Database · checked Sep 17, 2026
22	Ensiteusa	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	322 contacts →
	Indirect evidence “Leadership, accountability and integrity: Taken together, these three words sum up the core values that drive our mission to provide quality project management, engineering…” Source: RevenueBase Database · checked Sep 17, 2026
23	Kestrel Engineering, INC	Indirect evidence	Houston, TX, United StatesHQ checked Sep 17, 2026	201-500	318 contacts →
	Indirect evidence “Kestrel provides engineering, project and construction management and inspection services to the oil and gas industries.” Source: RevenueBase Database · checked Sep 17, 2026
24	Performance Energy Services, LLC	Partial evidence	Houma, LA, United StatesHQ checked Sep 17, 2026	501-1,000	305 contacts →
	Partial evidence “Performance Energy Services, a Danos company, was formed in to deliver safe, client-focused support to the onshore and offshore energy markets.” Source: RevenueBase Database · checked Sep 17, 2026
25	Price Gregory International	Partial evidence	Katy, TX, United StatesHQ checked Sep 17, 2026	1,001-5,000	299 contacts →
	Partial evidence “Price Gregory International (PGI) specializes in large-diameter pipeline construction for oil, gas, and renewables, with the capacity to manage multiple large-scale projects…” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: onshore pipeline contractors. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names onshore pipeline contractors.
Partial evidence: Its own public description names part of onshore pipeline contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name onshore pipeline contractors. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 1,196 onshore pipeline contractors based in the United States

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Onshore pipeline contractors based in the United States at a glance

As of Sep 17, 2026

28.7%Verified-email coverage

39.9Average contacts per company

11-50Median size (employees)

10.1%Largest-city concentration · Houston

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

259

11-50

391

51-200

349

201-500

117

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for United States, so it is reported there. Company counts and contact totals on this page are exact for United States, over 1,196 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among onshore pipeline contractors, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in the United States whose own description of what they do matches “onshore pipeline contractors”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names onshore pipeline contractors), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among onshore pipeline contractors, and records with no verified work email. Companies headquartered outside United States are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 13,696 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Onshore pipeline contractors by metro

Onshore pipeline contractors in Houston121
Onshore pipeline contractors in Midland32

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names onshore pipeline contractors, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many onshore pipeline contractors are there based in the United States?

RevenueBase identified 1,196 onshore pipeline contractors headquartered in the United States as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Team, INC, headquartered in Sugar Land, tops this list with the largest team on record.

Which city has the most onshore pipeline contractors?

Houston leads with 121 headquartered companies, followed by Midland (32) and Tulsa (22).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 13,696 verified decision-maker contacts tracked across these 1,196 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.