Company lists · Data refreshed September 2026

Top 25 Petrochemical plant construction firms based in Nigeria

Name: Petrochemical plant construction firms based in Nigeria
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 150 companies tracked

RevenueBase identified 150 company matches for petrochemical plant construction firms associated with Nigeria as of September 2026 and tracks 2,110 professional contacts across them, including 355 with verified work emails. Lagos is the largest hub.

This list covers company matches for petrochemical plant construction firms associated with Nigeria, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

150Companies

2,110Contacts tracked

355Verified emails

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The 25 largest petrochemical plant construction firms based in Nigeria

Ranked by team size

Top 25 of 150 company matches for petrochemical plant construction firms based in Nigeria, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Dover Engineering Limited	Exact match	Port Harcourt, NigeriaHQ recorded Sep 17, 2026	501-1,000	315 contacts →
	Exact match “Dover Engineering Limited is a reputable Engineering Design,EPC, Operations & Maintenance Company.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Pivot-Gis Limited	Exact match	Lagos, NigeriaHQ recorded Sep 17, 2026	201-500	264 contacts →
	Exact match “PIVOT-GIS is a leading Nigerian Engineering, Procurement, Construction, Operations & Maintenance (EPCOM) company serving the oil, gas, and energy sectors since 2004.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	LEE Engineering And Construction Company LTD	Exact match	Ikoyi, NigeriaHQ recorded Sep 17, 2026	501-1,000	114 contacts →
	Exact match “Lee Engineering and Construction Co.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Rosetti Pivot LTD	Exact match	Lagos, NigeriaHQ recorded Sep 17, 2026	51-200	84 contacts →
	Exact match “Rosetti Pivot Limited provides an array of engineering, procurement, and construction services to the oil & gas sectors within Nigeria and the Sub-Saharan Africa region, using…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Weltek Limited	Exact match	Port Harcourt, NigeriaHQ recorded Sep 17, 2026	51-200	55 contacts →
	Exact match “WELTEK Limited is an engineering, procurement and construction company, incorporated in Nigeria in 1986, to provide specialized services to the Oil & Gas, Power Generation…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Homeland Integrated Offshore Services Limited	Exact match	Lagos, NigeriaHQ recorded Sep 17, 2026	51-200	55 contacts →
	Exact match “Homeland Integrated Offshore Services Limited is a multi disciplinary organization for Engineering, Procurement, Construction and Installation services.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Tomsey Engineering & Services International LTD	Exact match	Ikeja, NigeriaHQ recorded Sep 17, 2026	11-50	33 contacts →
	Exact match “TOMSEY Engineering & Services International Ltd is a trusted provider of Engineering, Procurement, and Construction (EPC) services to Nigeria’s Oil & Gas, Power, Petrochemical…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Morpol Engineering Services Limited	Exact match	Victoria Island, NigeriaHQ recorded Sep 17, 2026	201-500	31 contacts →
	Exact match “Morpol Engineering Services Ltd.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Gmunu Limited	Exact match	Lekki Phase 1, NigeriaHQ recorded Sep 17, 2026	51-200	27 contacts →
	Exact match “GMUNU is a full-service Engineering Procurement and Construction Company.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Supasteel Limited	Exact match	Kaduna, NigeriaHQ recorded Sep 17, 2026	201-500	25 contacts →
	Exact match “Supasteel Limited is a wholly indigenously owned Engineering Procurement and construction Company carrying out Fabrication, Installation, Repair of Static and Rotating Equipment…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Cozym Limited	Exact match	Lekki Phase 1, NigeriaHQ recorded Sep 17, 2026	11-50	20 contacts →
	Exact match “Cozym Limited is a family of Engineers and Consultants with core competencies in the areas of Feasibility Studies, Front End and Detailed Engineering Designs, Materials…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Hopic Nigeria LTD	Exact match	Port Harcourt, NigeriaHQ recorded Sep 17, 2026	11-50	20 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Piecurve Energy Projects Limited	Exact match	Lekki, NigeriaHQ recorded Sep 17, 2026	11-50	15 contacts →
	Exact match “PIECURVE was founded by a team of leading consultants in engineering and project management with years of experience in Africa (Nigeria, Equatorial Guinea, Cameroon, Angola) and…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Indexpro Int'l Service LTD	Exact match	Port Harcourt, NigeriaHQ recorded Sep 17, 2026	51-200	14 contacts →
	Exact match “Looking for engineering solutions that deliver lasting impact?” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Gasfleet Engineering Limited	Exact match	Lasu Road, NigeriaHQ recorded Sep 17, 2026	51-200	12 contacts →
	Exact match “GASFLEET ENGINEERING LTD (GEL) was founded in 2016 to provide EPCM services for the energy sector.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	Desicongroup	Exact match	Victoria Island, NigeriaHQ recorded Sep 17, 2026	201-500	10 contacts →
	Exact match “For over 40 years, DESICON Engineering Limited has been an indigenous industry leader providing innovative Engineering, Procurement and Construction (EPC) solutions to our clients.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Selex Engineering & Construction Nigeria Limited	Exact match	Lekki Phase 1, NigeriaHQ recorded Sep 17, 2026	11-50	10 contacts →
	Exact match “Selex Engineering & Construction Company Limited is an indigenous engineering company delivering integrated Engineering, Procurement, Fabrication, Construction, Installation…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Mavi Energy Development Company Limited	Exact match	Lekki, NigeriaHQ recorded Sep 17, 2026	11-50	7 contacts →
	Exact match “Mavi Energy Development Company Limited (MEDCOL) is a leading provider of comprehensive solutions for the upstream oil and gas sector.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Structbuild Construction Limited	Exact match	Lagos, NigeriaHQ recorded Sep 17, 2026	11-50	7 contacts →
	Exact match “StructBuild Construction Limited is a Nigerian-owned civil engineering and construction company established in 2017 to deliver disciplined, safety-driven construction services to…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Offshore Dimensions LTD	Exact match	Ibeju-lekki, NigeriaHQ recorded Sep 17, 2026	11-50	6 contacts →
	Exact match “Offshore Dimensions Limited: Leading Engineering, Procurement and Construction Management Company in Nigeria Servicing the Energy, Oil and Gas We are a renowned engineering…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Jc'kanz Integrated Services Limited	Exact match	Victoria Island, NigeriaHQ recorded Sep 17, 2026	11-50	6 contacts →
	Exact match “Your one-stop shop for Engineering, Procurement, Construction, Installation & Commissioning (EPCIC)\| Facility O&M \| Wellhead Installation & Maintenance \| Automated Tank Cleaning \|…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Vhelbherg	Exact match	Port Harcourt, NigeriaHQ recorded Sep 17, 2026	1-10	6 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	MJD Oilfield Services Limited	Exact match	Port Harcourt, NigeriaHQ recorded Sep 17, 2026	51-200	5 contacts →
	Exact match “With nearly a decade of operations, MJD Oilfield Services Limited has become a unique provider of solutions to the Nigerian oil and gas industry with dynamic expertise in…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Sunup Energy	Exact match	Port Harcourt, NigeriaHQ recorded Sep 17, 2026	51-200	5 contacts →
	Exact match “Engineering, Procurement, Construction, Installation and Commissioning” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Bauweise Services Limited	Exact match	Ifako, NigeriaHQ recorded Sep 17, 2026	1-10	4 contacts →
	Exact match “Bauweise Services Limited is an engineering, construction, and project management company based in Lagos, Nigeria.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “petrochemical plant construction firms”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 150 petrochemical plant construction firms based in Nigeria

See the full list, filter by size, metro and specialty, and access 355 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Petrochemical plant construction firms based in Nigeria at a glance

As of Sep 17, 2026

16.8%Verified-email coverage

14.1Average contacts per company

11-50Median size (employees)

22.7%Largest-city concentration · Lagos

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

10001+

Email recency for this list is measured worldwide rather than for Nigeria, so it is reported there. Company counts and contact totals on this page are exact for Nigeria, over 150 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Nigeria whose business descriptions match “petrochemical plant construction firms” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 355 professional contacts with verified work emails across the full matched dataset. 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.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “petrochemical plant construction firms”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many petrochemical plant construction firms are there based in Nigeria?

RevenueBase identified 150 company matches for petrochemical plant construction firms associated with Nigeria as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Dover Engineering Limited tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most petrochemical plant construction firms?

Lagos leads with 34 company records, followed by Port Harcourt (31) and Lagos State (12).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 355 professional contacts with verified work emails tracked across these 150 companies; direct dials are available where recorded.

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 SmartSearch, 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.