Company lists · Data refreshed September 2026

Top 25 Refinery engineering firms based in Chennai, India

Name: Refinery engineering firms based in Chennai, India
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 114 companies tracked

RevenueBase identified 114 refinery engineering firms headquartered in Chennai, India as of September 2026 and tracks 5,069 professional contacts across them, including 392 with verified work emails. Pune is the largest hub.

This list covers refinery engineering firms headquartered in Chennai, India, 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

114Companies

5,069Contacts tracked

392Verified emails

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The 25 largest refinery engineering firms based in Chennai, India

Ranked by team size

Top 25 of 114 refinery engineering firms based in Chennai, India, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to refinery engineering firms: 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	Chennai Petroleum Corp. LTD Indian OIL	Indirect evidence	Chennai, IndiaHQ checked Sep 17, 2026	1,001-5,000	1,194 contacts →
	Indirect evidence “Chennai Petroleum Corporation Limited (CPCL) is a subsidiary of IOCL with world class refining technologies and a dominant presence in South India.” Source: RevenueBase Database · checked Sep 17, 2026
2	Gulf Asia Engineering And Projects Private Limited	Partial evidence	Chennai, IndiaHQ checked Sep 17, 2026	n/a	1,022 contacts →
	Partial evidence “Gulf Asia Engineering and Projects Private Limited(GAEP), subsidiary of RP Group, Bahrain, is a leading engineering and construction company.” Source: RevenueBase Database · checked Sep 17, 2026
3	Texcel Engineers PVT LTD	Indirect evidence	Chennai, IndiaHQ checked Sep 17, 2026	201-500	202 contacts →
	Indirect evidence “Texcel Engineers – the name is synonym for Technical Excellence.” Source: RevenueBase Database · checked Sep 17, 2026
4	Solidpro Group	Partial evidence	Chennai, IndiaHQ checked Sep 17, 2026	51-200	183 contacts →
	Partial evidence “At SolidPro we see engineering as beyond a service.” Source: RevenueBase Database · checked Sep 17, 2026
5	Ifluids Engineering	Partial evidence	Chennai, IndiaHQ checked Sep 17, 2026	51-200	180 contacts →
	Partial evidence “iFluids Engineering, an ISO 9001:2015 certified company provides specialized services predominantly for Oil & Gas, Petro-chemical and also other industrial sectors.” Source: RevenueBase Database · checked Sep 17, 2026
6	Shimi Designs And Consulting Engineers PVT LTD	Partial evidence	Chennai, IndiaHQ checked Sep 17, 2026	51-200	137 contacts →
	Partial evidence “SHIMI Designs and Consulting Engineers Private Limited is one of the growing engineering design companies having good reputation since 1989.” Source: RevenueBase Database · checked Sep 17, 2026
7	Besten Engineers And Consultants India PVT LTD	Partial evidence	Chennai, IndiaHQ checked Sep 17, 2026	51-200	107 contacts →
	Partial evidence “We are engineers, designers, planners providing design, detailed engineering and, procurement support to the industrial sector.” Source: RevenueBase Database · checked Sep 17, 2026
8	Sedin Engineering	Partial evidence	Chennai, IndiaHQ checked Sep 17, 2026	51-200	94 contacts →
	Partial evidence “We are engineering design specialists.” Source: RevenueBase Database · checked Sep 17, 2026
9	Sloan Global	Indirect evidence	Chennai, IndiaHQ checked Sep 17, 2026	201-500	75 contacts →
	Indirect evidence “Sloan Global, Inc was founded on the principles of honesty, integrity, and safety.” Source: RevenueBase Database · checked Sep 17, 2026
10	Epcogen Private Limited	Strong evidence	Chennai, IndiaHQ checked Sep 17, 2026	51-200	66 contacts →
	Strong evidence “EPCOGEN Pvt Ltd is an Engineering Service Company, performing Pre-Bid Engineering, FEED & Detailed Engineering, primarily for the Oil & Gas, Refineries, Petrochemicals and Power…” Source: RevenueBase Database · checked Sep 17, 2026
11	Vaap Energy Pvt.Ltd	Indirect evidence	Chennai, IndiaHQ checked Sep 17, 2026	51-200	59 contacts →
	Indirect evidence “VAAP ENERGY PVT.” Source: RevenueBase Database · checked Sep 17, 2026
12	Petronash Engineering Services	Partial evidence	Chennai, IndiaHQ checked Sep 17, 2026	201-500	52 contacts →
	Partial evidence “We are a multidisciplinary engineering company providing comprehensive design and engineering services across our offices in Dubai, Dammam, and Qatar.” Source: RevenueBase Database · checked Sep 17, 2026
13	Effixon Engineering PVT LTD	Partial evidence	Chennai, IndiaHQ checked Sep 17, 2026	51-200	51 contacts →
	Partial evidence “Effixon Engineering Pvt Ltd is an eminent engineering solution provider endeavours to provide best in class Design and Detail engineering solutions to clients across Mining,Bulk…” Source: RevenueBase Database · checked Sep 17, 2026
14	Oiltech Engineering LTD	Partial evidence	Chennai, IndiaHQ checked Sep 17, 2026	51-200	48 contacts →
	Partial evidence “Oiltech is engaged in design, engineering and project management services for the Oil & Gas, Energy, Process & Petrochemical, Water and Effluent Treatment and Waste to Value…” Source: RevenueBase Database · checked Sep 17, 2026
15	Chemsys Innovative Solutions	Partial evidence	Chennai, IndiaHQ checked Sep 17, 2026	11-50	46 contacts →
	Partial evidence “Chemsis was established by a team of Professional Engineers & is the abbreviated form of Chemical Process Systems.We undertake Process Plant Engineering & Design, Procurement &…” Source: RevenueBase Database · checked Sep 17, 2026
16	Accuspeed Engineering Services India Private Limited	Partial evidence	Chennai, IndiaHQ checked Sep 17, 2026	51-200	35 contacts →
	Partial evidence “Accuspeed Engineering Services India Limited offers cost effective engineering solutions and services covering Design, Detailed Engineering, Supply, erection, installation and…” Source: RevenueBase Database · checked Sep 17, 2026
17	EL Shaddai Engineering P LTD	Indirect evidence	Chennai, IndiaHQ checked Sep 17, 2026	201-500	31 contacts →
	Indirect evidence “El Shaddai was founded in year 2009 to quench the burgeoning global demand of qualified manpower in the diverse sectors of the Oil & Gas industries.” Source: RevenueBase Database · checked Sep 17, 2026
18	Agile PMC PVT LTD	Indirect evidence	Chennai, IndiaHQ checked Sep 17, 2026	51-200	29 contacts →
	Indirect evidence “Empowering Projects Worldwide: Founded in 2017, we are a professionally managed and employee-owned organization.” Source: RevenueBase Database · checked Sep 17, 2026
19	Ruastech Engineering	Partial evidence	Chennai, IndiaHQ checked Sep 17, 2026	1-10	29 contacts →
	Partial evidence “RUASTECH is the consultancy firm in the fields of engineering, technical services and innovation.” Source: RevenueBase Database · checked Sep 17, 2026
20	Procedyne Engineers	Partial evidence	Chennai, IndiaHQ checked Sep 17, 2026	11-50	26 contacts →
	Partial evidence “Procedyne Engineers is a mechanical or industrial engineering company based out of 4, JAYARAM AVENUE, SHASTRI NAGAR, Chennai, Tamil Nadu, India.” Source: RevenueBase Database · checked Sep 17, 2026
21	Valbrid Engineering & Technologies	Partial evidence	Chennai, IndiaHQ checked Sep 17, 2026	11-50	15 contacts →
	Partial evidence “ValBrid: Innovative Engineering Outsourcing Solutions for Global Industries We empower industries like metals, mining, power, marine, and oil & gas with cutting-edge engineering…” Source: RevenueBase Database · checked Sep 17, 2026
22	Petrochem Designs	Partial evidence	Chennai, IndiaHQ checked Sep 17, 2026	1-10	15 contacts →
	Partial evidence “Founded on 15 September 2023, Petrochem Designs is an emerging plant engineering and design organization delivering innovative, cost-effective solutions for diverse process…” Source: RevenueBase Database · checked Sep 17, 2026
23	SRI Projects	Partial evidence	Chennai, IndiaHQ checked Sep 17, 2026	11-50	13 contacts →
	Partial evidence “Sri Projects is an engineering firm specializing in Plant Layout, Process, and Piping Engineering for Bio Gas Plants and Chemical Plants.” Source: RevenueBase Database · checked Sep 17, 2026
24	Moss Engineering Private Limited	Indirect evidence	Chennai, IndiaHQ checked Sep 17, 2026	51-200	11 contacts →
	Indirect evidence “MOSS has established ourselves as a reliable stakeholder to provide the expertise in the field of construction for the oil and gas, petrochemical, process industries, storage…” Source: RevenueBase Database · checked Sep 17, 2026
25	Alinoz Energy	Partial evidence	Chennai, IndiaHQ checked Sep 17, 2026	1-10	10 contacts →
	Partial evidence “ALINOZ Energy, a consulting firm registered in Doha, Qatar, specialized in the field of Loss Prevention, Technical Safety Engineering, Firefighting system design, Process Safety…” 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: refinery engineering firms. 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 refinery engineering firms.
Partial evidence: Its own public description names part of refinery engineering firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name refinery engineering firms. 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 114 refinery engineering firms based in Chennai, India

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Refinery engineering firms based in Chennai, India at a glance

As of Sep 17, 2026

7.7%Verified-email coverage

44.5Average contacts per company

11-50Median size (employees)

149.1%Largest-city concentration · Pune

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

1,001-5,000

Email recency for this list is measured across the whole India list rather than for Chennai, so it is reported there. Company counts and contact totals on this page are exact for Chennai, over 114 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 refinery engineering firms, 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 Chennai, India whose own description of what they do matches “refinery engineering firms”. 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 refinery engineering firms), 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 refinery engineering firms, and records with no verified work email. Companies headquartered outside Chennai 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, 392 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.

Refinery engineering firms by metro in India

Refinery engineering firms in Pune170
Refinery engineering firms in Mumbai145
Refinery engineering firms in Chennai114
Refinery engineering firms in Vadodara100
Refinery engineering firms in Hyderabad84
Refinery engineering firms in Ahmedabad67
Refinery engineering firms in New Delhi63
Refinery engineering firms in Navi Mumbai50
Refinery engineering firms in Bangalore46
Refinery engineering firms in Thane45
Refinery engineering firms in Kolkata43
Refinery engineering firms in Noida38
Refinery engineering firms in Bengaluru30
Refinery engineering firms in Coimbatore29

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 refinery engineering firms, 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 refinery engineering firms are there based in Chennai, India?

RevenueBase identified 114 refinery engineering firms headquartered in Chennai, India 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?

Chennai Petroleum Corp. LTD Indian OIL, headquartered in Chennai, tops this list with the largest team on record.

Which city has the most refinery engineering firms?

Pune leads with 170 headquartered companies, followed by Mumbai (145) and Chennai (114).

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 392 verified decision-maker contacts tracked across these 114 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.