Company lists · Data refreshed September 2026

Top 25 Petroleum equipment accessory manufacturers based in Houston, United States

Name: Petroleum equipment accessory manufacturers based in Houston, United States
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 30, 2026 207 companies tracked

RevenueBase identified 207 petroleum equipment accessory manufacturers headquartered in Houston, United States as of September 2026 and tracks 13,749 professional contacts across them, including 2,628 with verified work emails. Across the United States, Houston is the largest hub for this category.

This list covers petroleum equipment accessory manufacturers headquartered in Houston, 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 30, 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 30, 2026 86% judged on-target in blind review

207Companies

13,749Contacts tracked

2,628Verified emails

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The 25 largest petroleum equipment accessory manufacturers based in Houston, United States

Ranked by team size

Top 25 of 207 petroleum equipment accessory manufacturers based in Houston, United States, ranked by team size, largest first. Data refreshed Sep 30, 2026. RevenueBase Smart Search rates how each company's information relates to petroleum equipment accessory manufacturers: 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	OIL States International	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	5,001-10,000	2,215 contacts →
	Indirect evidence “Oil States International, Inc.” Source: RevenueBase Database · checked Sep 30, 2026
2	Superior Energy Services	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,938 contacts →
	Indirect evidence “For oil & gas exploration and production companies worldwide, Superior Energy Services is an oilfield products and services company with global reach, financial stability and…” Source: RevenueBase Database · checked Sep 30, 2026
3	Stewart & Stevenson	Strong evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	1,135 contacts →
	Strong evidence “Stewart & Stevenson is a leading designer, manufacturer and provider of specialized equipment and aftermarket parts and service for the oil and gas and other industries that we…” Source: RevenueBase Database · checked Sep 30, 2026
4	DNOW	Partial evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	5,001-10,000	976 contacts →
	Partial evidence “DNOW is a premier energy and industrial solutions provider with a legacy of over 160 years as a leading distributor of pipe, valves, fittings (PVF), pumps and fabricated equipment.” Source: RevenueBase Database · checked Sep 30, 2026
5	Cactus Wellhead	Strong evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	703 contacts →
	Strong evidence “Cactus designs, manufactures, sells and rents a range of highly-engineered wellheads and pressure control equipment.” Source: RevenueBase Database · checked Sep 30, 2026
6	Worldwide Oilfield Machine	Strong evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	635 contacts →
	Strong evidence “Worldwide Oilfield Machine (WOM) is a multinational equipment manufacturer specializing in solutions for drilling, testing, production and intervention operations.” Source: RevenueBase Database · checked Sep 30, 2026
7	Afglobal Corporation	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	51-200	311 contacts →
	Indirect evidence “AFGlobal Corporation is an oil and gas OEM specializing in technology, products, and services with fully-integrated manufacturing capabilities to clients around the world.” Source: RevenueBase Database · checked Sep 30, 2026
8	Energy Alloys Global Solutions	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	501-1,000	303 contacts →
	Indirect evidence “EAGS and EAGS-Americas are the only 100% oil and gas focused suppliers of specialty metals to the global oilfield industry.” Source: RevenueBase Database · checked Sep 30, 2026
9	NCS Multistage	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	201-500	301 contacts →
	Indirect evidence “Since our founding in 2006, NCS Multistage has grown to be a leading provider of engineered products and support services for oil and natural gas wells around the world.” Source: RevenueBase Database · checked Sep 30, 2026
10	Greene's Energy Group	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	201-500	285 contacts →
	Indirect evidence “Greene’s Energy Group offers a range of support services and products to the oil and gas industry.” Source: RevenueBase Database · checked Sep 30, 2026
11	Premium Oilfield Technologies	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	201-500	284 contacts →
	Indirect evidence “Since 2003, Premium Oilfield Technologies has been supplying high quality products to the oil and gas industry.” Source: RevenueBase Database · checked Sep 30, 2026
12	Mogas, A Flowserve Company	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	201-500	252 contacts →
	Indirect evidence “MOGAS, A Flowserve Company, is the most trusted severe service technology company offering severe service valves, surface engineering / coating, modular process units, and…” Source: RevenueBase Database · checked Sep 30, 2026
13	Weldfit	Partial evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	51-200	195 contacts →
	Partial evidence “For over 50 years, WeldFit has been a leading global manufacturer of standard and custom products for the pipeline, oilfield, refining, and petrochemical industries, and dedicated…” Source: RevenueBase Database · checked Sep 30, 2026
14	Deepsea Technologies	Strong evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	51-200	166 contacts →
	Strong evidence “Deepsea Technologies, Inc.(DTI) Engineers and Manufactures a wide range of products and equipment used in subsea oil & gas field development projects.” Source: RevenueBase Database · checked Sep 30, 2026
15	Borets US INC	Strong evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	1,001-5,000	149 contacts →
	Strong evidence “Borets is one of the leading manufacturers of oilfield equipment in the world offering a complete array of oil recovery products and services in the operation, repair, and…” Source: RevenueBase Database · checked Sep 30, 2026
16	Amot Controls	Partial evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	201-500	134 contacts →
	Partial evidence “AMOT is the leading designer and manufacturer of diesel engine safety systems, temperature control valves, and monitoring products for engines, compressors, turbines and other…” Source: RevenueBase Database · checked Sep 30, 2026
17	KWI KW International, LLC	Partial evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	201-500	120 contacts →
	Partial evidence “Production Equipment & Measurement Experts Our Mission is to build the highest Quality and Best Value Oil & Gas Production & Measurement Equipment in the Industry.” Source: RevenueBase Database · checked Sep 30, 2026
18	Blackhawk Specialty Tools	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	201-500	117 contacts →
	Indirect evidence “Blackhawk Specialty Tools provides oil and gas operators with engineered solutions that improve performance and efficiency.” Source: RevenueBase Database · checked Sep 30, 2026
19	Sayatva	Partial evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	51-200	93 contacts →
	Partial evidence “Sayatva offers turnkey solutions for the engineering and manufacturing of oil and gas equipment used in drilling and production under extreme conditions We are a leading Original…” Source: RevenueBase Database · checked Sep 30, 2026
20	Kinetic Pressure Control	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	201-500	79 contacts →
	Indirect evidence “Kinetic Pressure Control leads the industry in pressure control technology.” Source: RevenueBase Database · checked Sep 30, 2026
21	Tube Supply	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	51-200	77 contacts →
	Indirect evidence “Established in 2016, Tube Supply is a major supplier serving the oil and gas industry with quality tube and bar products.” Source: RevenueBase Database · checked Sep 30, 2026
22	Great Western Valve	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	51-200	70 contacts →
	Indirect evidence “Great Western Valve, Inc.” Source: RevenueBase Database · checked Sep 30, 2026
23	Dan-Loc Group	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	51-200	66 contacts →
	Indirect evidence “We perform so you can perform.” Source: RevenueBase Database · checked Sep 30, 2026
24	CNC Flow Control	Indirect evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	51-200	61 contacts →
	Indirect evidence “CNC FLOW CONTROL - YOUR TRUSTED PROVIDER FOR SUPERIOR FLOW CONTROL SOLUTIONS.” Source: RevenueBase Database · checked Sep 30, 2026
25	Stewart Tubular Products, LLC	Strong evidence	Houston, TX, United StatesHQ checked Sep 30, 2026	51-200	58 contacts →
	Strong evidence “Stewart Tubular Products is a manufacturer, distributor and threader of down-hole tubing and casing accessories.” Source: RevenueBase Database · checked Sep 30, 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: petroleum equipment accessory manufacturers. 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 petroleum equipment accessory manufacturers.
Partial evidence: Its own public description names part of petroleum equipment accessory manufacturers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name petroleum equipment accessory manufacturers. 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 207 petroleum equipment accessory manufacturers based in Houston, United States

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Petroleum equipment accessory manufacturers based in Houston, United States at a glance

As of Sep 30, 2026

19.1%Verified-email coverage

66.4Average contacts per company

11-50Median size (employees)

Sep 30, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

Email recency for this list is measured across the whole United States list rather than for Houston, so it is reported there. Company counts and contact totals on this page are exact for Houston, over 207 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 petroleum equipment accessory manufacturers, 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 Houston, United States whose own description of what they do matches “petroleum equipment accessory manufacturers”. 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 petroleum equipment accessory manufacturers), 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 petroleum equipment accessory manufacturers, and records with no verified work email. Companies headquartered outside Houston 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, 2,628 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 30, 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.

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 petroleum equipment accessory manufacturers, 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 petroleum equipment accessory manufacturers are there based in Houston, United States?

RevenueBase identified 207 petroleum equipment accessory manufacturers headquartered in Houston, 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?

OIL States International, headquartered in Houston, tops this list with the largest team on record.

Which city in the United States has the most petroleum equipment accessory manufacturers?

Houston leads the United States with 207 headquartered companies, followed by Odessa (22) and Lafayette (19).

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 2,628 verified decision-maker contacts tracked across these 207 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 30, 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.