Company lists · Data refreshed September 2026

Top 25 Oil and gas processing plant contractors based in Iran

Name: Oil and gas processing plant contractors based in Iran
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 408 companies tracked

RevenueBase identified 408 oil and gas processing plant contractors headquartered in Iran as of September 2026 and tracks 17,642 professional contacts across them, including 55 with verified work emails. Tehran is the largest hub.

This list covers oil and gas processing plant contractors headquartered in Iran, 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

408Companies

17,642Contacts tracked

55Verified emails

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The 25 largest oil and gas processing plant contractors based in Iran

Ranked by team size

Top 25 of 408 oil and gas processing plant contractors based in Iran, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to oil and gas processing plant 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	OIL Industries Commissioning And Operation Company Oico	Partial evidence	Tehran, IranHQ checked Sep 17, 2026	1,001-5,000	869 contacts →
	Partial evidence “Oil Industries’ Commissioning and Operation Company (OICO) is incorporated to manage and execute commissioning and start-up, operation, maintenance and professional training for…” Source: RevenueBase Database · checked Sep 17, 2026
2	OIL Design & Construction Company Odcc	Strong evidence	Tehran, IranHQ checked Sep 17, 2026	1,001-5,000	804 contacts →
	Strong evidence “Oil Design & Construction Company (ODCC) We are a first grade full-service contractor ranked by the GOI primarily serving the hydrocarbon market with the capability to execute…” Source: RevenueBase Database · checked Sep 17, 2026
3	Oiec Group	Strong evidence	Tehran, IranHQ checked Sep 17, 2026	1,001-5,000	772 contacts →
	Strong evidence “OIEC Group is a leading general contractor (GC) in Engineering, Procurement, and Construction (EPC) projects, with a particular focus on Iran’s Oil and Gas industry.” Source: RevenueBase Database · checked Sep 17, 2026
4	FARAB	Partial evidence	Tehran, IranHQ checked Sep 17, 2026	1,001-5,000	662 contacts →
	Partial evidence “Farab is an engineering, procurement, construction, and project management company operating as a turnkey general contractor for most major industries, including civil…” Source: RevenueBase Database · checked Sep 17, 2026
5	Iranian Offshore Engineering And Construction Company Ioec	Indirect evidence	Tehran, IranHQ checked Sep 17, 2026	1,001-5,000	523 contacts →
	Indirect evidence “Iranian Offshore Engineering and Construction Company (IOEC) is a private company.” Source: RevenueBase Database · checked Sep 17, 2026
6	Jahanpars Group	Partial evidence	Tehran, IranHQ checked Sep 17, 2026	501-1,000	367 contacts →
	Partial evidence “Jahanpars Engineering and Construction Company is a leading, privately-owned general contractor in the Middle East with four decades of successful experience.” Source: RevenueBase Database · checked Sep 17, 2026
7	Neyrperse	Indirect evidence	Tehran, IranHQ checked Sep 17, 2026	501-1,000	276 contacts →
	Indirect evidence “NEYRPERSE has been actively involved in designing, procurement, manufacturing, installation and commissioning of the following fields in industry since its establishment in 1958…” Source: RevenueBase Database · checked Sep 17, 2026
8	Enerchimi	Partial evidence	Tehran, IranHQ checked Sep 17, 2026	201-500	221 contacts →
	Partial evidence “Enerchimi Engineering Company was established in July 1980 by a group of qualified and experienced executive managers of the National Iranian Oil Company with the objective of…” Source: RevenueBase Database · checked Sep 17, 2026
9	Iran Ofogh Industrial Development Company Ioid	Indirect evidence	Tehran, IranHQ checked Sep 17, 2026	1,001-5,000	191 contacts →
	Indirect evidence “We are proud to present over a half century of our history, beginning with formation of the Ofogh Consulting Engineers Company in 1961.” Source: RevenueBase Database · checked Sep 17, 2026
10	Asfalt Tous	Strong evidence	Tehran, IranHQ checked Sep 17, 2026	1,001-5,000	180 contacts →
	Strong evidence “For almost half a century, Asfalt Tous Company has demonstrated its ability to execute major Industrial, Mining, Oil, Gas and Petrochemical Projects directed by expert key…” Source: RevenueBase Database · checked Sep 17, 2026
11	Packman Company	Indirect evidence	تهران, IranHQ checked Sep 17, 2026	501-1,000	116 contacts →
	Indirect evidence “تولید کننده انواع بویلر آبگرم و بخار، هیتر روغن داغ، مبدل حرارتی، مخازن تحت فشار، تجهیزات تصفیه آب و.” Source: RevenueBase Database · checked Sep 17, 2026
12	SGPC	Partial evidence	Mashhad-sarakhs, IranHQ checked Sep 17, 2026	501-1,000	97 contacts →
	Partial evidence “Gas Refinery” Source: RevenueBase Database · checked Sep 17, 2026
13	PEDEX	Indirect evidence	Tehran, IranHQ checked Sep 17, 2026	501-1,000	94 contacts →
	Indirect evidence “Pars Energy Gostar Drilling and Exploration Company (PEDEX) was established in 1981 as a construction company and a subsidiary of Mostazafan Foundation, and it started its…” Source: RevenueBase Database · checked Sep 17, 2026
14	Panah Sanat Part	Strong evidence	Tehran, IranHQ checked Sep 17, 2026	1,001-5,000	89 contacts →
	Strong evidence “Panah-Sanat-Part has been involved in the implementation of oil industry contracting projects since 2002 and has been continuously involved as a private sector contractor in the…” Source: RevenueBase Database · checked Sep 17, 2026
15	Maroon Karan CO	Indirect evidence	Tehran, IranHQ checked Sep 17, 2026	1,001-5,000	79 contacts →
	Indirect evidence “The Maroon Karan technical and engineering company was registered in 1992 No.” Source: RevenueBase Database · checked Sep 17, 2026
16	Danial Petro Company	Indirect evidence	Tehran, IranHQ checked Sep 17, 2026	501-1,000	70 contacts →
	Indirect evidence “Daniel Petro Company has started its activities since 2010 with the aim of conducting study activities and providing technical and engineering services inside and outside of the…” Source: RevenueBase Database · checked Sep 17, 2026
17	Foolad Technic International Engineering Company Fieco Tehran	Indirect evidence	Esfahan, IranHQ checked Sep 17, 2026	201-500	67 contacts →
	Indirect evidence “In effect of the structural changing in “Design and consultant Institute of Steel” the Foolad Technic international engineering company (FIECO) was founded in 1991.” Source: RevenueBase Database · checked Sep 17, 2026
18	Shargan	Strong evidence	Tehran, IranHQ checked Sep 17, 2026	201-500	55 contacts →
	Strong evidence “SHARGAN was established in 1994 to build an indigenous technological base for design, engineering as well as project management and technical services required by Oil, Gas &…” Source: RevenueBase Database · checked Sep 17, 2026
19	Pars Hassas Company	Indirect evidence	Shiraz, IranHQ checked Sep 17, 2026	1,001-5,000	51 contacts →
	Indirect evidence “Pars Hassas Company is a mechanical or industrial engineering company based out of Building 256, Shiraz, Fars, Iran.” Source: RevenueBase Database · checked Sep 17, 2026
20	Sazeh Consultants	Indirect evidence	Tehran, IranHQ checked Sep 17, 2026	1,001-5,000	45 contacts →
	Indirect evidence “Sazeh is a privately owned independent joint stock company founded in Iran in 1970, operating for over 50 years in a wide range of industrial and urban projects.” Source: RevenueBase Database · checked Sep 17, 2026
21	Poec Pars OIL Energy Company	Strong evidence	Tehran, IranHQ checked Sep 17, 2026	201-500	33 contacts →
	Strong evidence “POEC is General EPCC Contractor in Iran oil & Energy Industries.” Source: RevenueBase Database · checked Sep 17, 2026
22	Pishgaman Fanandish Tehran	Indirect evidence	Tehran, IranHQ checked Sep 17, 2026	1,001-5,000	12 contacts →
	Indirect evidence “Starting its business in 1994, the Pishgaman Fanandish Co.” Source: RevenueBase Database · checked Sep 17, 2026
23	Sahand Nasb CO	Strong evidence	Tehran, IranHQ checked Sep 17, 2026	11-50	10 contacts →
	Strong evidence “Sahand Nasb is a private Iranian company that was established in 1993 in the field of: Construction, installation and commissioning of oil, gas, petrochemical, water and energy…” Source: RevenueBase Database · checked Sep 17, 2026
24	C.P.D. Contruction Company	Indirect evidence	Tehran, IranHQ checked Sep 17, 2026	11-50	8 contacts →
	Indirect evidence “CPD Construction company was stablished in 1977 and primary worked in construction of concrete and steel structures of commercial and industrial buildings such as office…” Source: RevenueBase Database · checked Sep 17, 2026
25	Toppco	Indirect evidence	Isfahan, IranHQ checked Sep 17, 2026	51-200	6 contacts →
	Indirect evidence “Tiran Outreach Petro Paya (TOPPCO)” 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: oil and gas processing plant 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 oil and gas processing plant contractors.
Partial evidence: Its own public description names part of oil and gas processing plant contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name oil and gas processing plant 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 408 oil and gas processing plant contractors based in Iran

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Oil and gas processing plant contractors based in Iran at a glance

As of Sep 17, 2026

0.3%Verified-email coverage

43.2Average contacts per company

51-200Median size (employees)

74.8%Largest-city concentration · Tehran

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

132

51-200

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Iran, so it is reported there. Company counts and contact totals on this page are exact for Iran, over 408 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 oil and gas processing plant 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 Iran whose own description of what they do matches “oil and gas processing plant 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 oil and gas processing plant 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 oil and gas processing plant contractors, and records with no verified work email. Companies headquartered outside Iran 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, 55 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.

Oil and gas processing plant contractors by metro

Oil and gas processing plant contractors in Tehran305

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 oil and gas processing plant 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 oil and gas processing plant contractors are there based in Iran?

RevenueBase identified 408 oil and gas processing plant contractors headquartered in Iran 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 Industries Commissioning And Operation Company Oico, headquartered in Tehran, tops this list with the largest team on record.

Which city has the most oil and gas processing plant contractors?

Tehran leads with 305 headquartered companies, followed by Isfahan (15) and Shiraz (13).

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 55 verified decision-maker contacts tracked across these 408 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.