Company lists · Data refreshed September 2026

Top 24 Infrastructure conglomerates based in Kolkata, India

Name: Infrastructure conglomerates based in Kolkata, India
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 100 companies tracked

RevenueBase identified 100 infrastructure conglomerates headquartered in Kolkata, India as of September 2026 and tracks 13,063 professional contacts across them, including 1,386 with verified work emails. Mumbai is the largest hub.

This list covers infrastructure conglomerates headquartered in Kolkata, 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 20, 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 20, 2026 86% judged on-target in blind review

100Companies

13,063Contacts tracked

1,386Verified emails

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The 24 largest infrastructure conglomerates based in Kolkata, India

Ranked by team size

Top 24 of 100 infrastructure conglomerates based in Kolkata, India, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to infrastructure conglomerates: 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	Shyam Metalics And Energy Limited	Partial evidence	Kolkata, IndiaHQ checked Sep 20, 2026	10001+	2,819 contacts →
	Partial evidence “Shyam Metalics is one of India’s fastest-growing and most trusted integrated metal conglomerates, with a diversified portfolio spanning carbon steel, stainless steel, ferro…” Source: RevenueBase Database · checked Sep 20, 2026
2	Rashmi Group	Partial evidence	Kolkata, IndiaHQ checked Sep 20, 2026	10001+	2,161 contacts →
	Partial evidence “Rashmi Group is a leading global conglomerate in steel, cement, power, ductile iron pipes, ferro alloys, and mining-driving India’s growth with strength and innovation.” Source: RevenueBase Database · checked Sep 20, 2026
3	Bridge And Roof Company India Limited	Indirect evidence	Kolkata, IndiaHQ checked Sep 20, 2026	501-1,000	1,369 contacts →
	Indirect evidence “Established in 1920, BRIDGE & ROOF CO.(INDIA) LTD.(B&R) has grown into a premier multi-disciplinary Engineering and Construction organisation in the country.” Source: RevenueBase Database · checked Sep 20, 2026
4	RP Sanjiv Goenka Group	Partial evidence	Kolkata, IndiaHQ checked Sep 20, 2026	10001+	702 contacts →
	Partial evidence “The RPSG Group is one of India's fastest growing conglomerates with a significant global presence.” Source: RevenueBase Database · checked Sep 20, 2026
5	Lumino Industries Limited	Partial evidence	Kolkata, IndiaHQ checked Sep 20, 2026	501-1,000	675 contacts →
	Partial evidence “Headquartered in Kolkata, Lumino Industries is one of the few fully integrated, product-driven companies in the power, energy, and infrastructure sectors.” Source: RevenueBase Database · checked Sep 20, 2026
6	Utkarsh India Limited	Indirect evidence	Kolkata, IndiaHQ checked Sep 20, 2026	1,001-5,000	596 contacts →
	Indirect evidence “Utkarsh India Limited is a ₹2500+ Cr.” Source: RevenueBase Database · checked Sep 20, 2026
7	Royal Infraconstru LTD	Partial evidence	Kolkata, IndiaHQ checked Sep 20, 2026	201-500	446 contacts →
	Partial evidence “Royal Infraconstru Limited is a part of the ROYAL Group and is the fastest growing and one of the most respected Infrastructure companies in India.” Source: RevenueBase Database · checked Sep 20, 2026
8	GPT Infraprojects Limited	Partial evidence	Kolkata, IndiaHQ checked Sep 20, 2026	501-1,000	390 contacts →
	Partial evidence “GPT Infraprojects Limited, the flagship company was renamed to reflect the core areas of operation of the company in the execution of civil and infrastructure projects, after the…” Source: RevenueBase Database · checked Sep 20, 2026
9	Shrachi Group	Indirect evidence	Kolkata, IndiaHQ checked Sep 20, 2026	501-1,000	210 contacts →
	Indirect evidence “The late Sri Brijlal Todi, entrepreneur and visionary, had a dream, a dream to partner the thriving state of Bengal and grow with it and, by so doing, partner the nation.” Source: RevenueBase Database · checked Sep 20, 2026
10	Quippo Construction Equipment LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 20, 2026	201-500	131 contacts →
	Indirect evidence “Quippo Construction Equipment Limited is one of the largest Construction Equipment Service Provider and a pioneer in Equipment Renting and Equipment Banking services in India.” Source: RevenueBase Database · checked Sep 20, 2026
11	Adventz Industries	Partial evidence	Kolkata, IndiaHQ checked Sep 20, 2026	10001+	106 contacts →
	Partial evidence “The Adventz Group is a diversified global enterprise building enduring businesses across agriculture, engineering, chemicals, infrastructure, and realty.” Source: RevenueBase Database · checked Sep 20, 2026
12	Bharat Vanijya Eastern Pvt. LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 20, 2026	501-1,000	74 contacts →
	Indirect evidence “Bharat Vanijya Eastern Pvt.” Source: RevenueBase Database · checked Sep 20, 2026
13	Coal Mines Associated Traders Private Limited	Indirect evidence	Kolkata, IndiaHQ checked Sep 20, 2026	51-200	54 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 20, 2026
14	Shriram Ozone	Partial evidence	Kolkata, IndiaHQ checked Sep 20, 2026	501-1,000	45 contacts →
	Partial evidence “Founded in 1990, Shriram Ozone is now one of the pre-eminent conglomerates in the real estate industry in India, having a plenitude of prestigious commercial & residential…” Source: RevenueBase Database · checked Sep 20, 2026
15	Bengal Aerotropolis	Partial evidence	Kolkata, IndiaHQ checked Sep 20, 2026	501-1,000	41 contacts →
	Partial evidence “Bengal Aerotropolis Projects Limited (BAPL) is a specialized infrastructure company engaged in the identification and development of aerotropolis projects.” Source: RevenueBase Database · checked Sep 20, 2026
16	The Mining & Engineering Corporation	Indirect evidence	Kolkata, IndiaHQ checked Sep 20, 2026	501-1,000	36 contacts →
	Indirect evidence “The Mining & Engineering Corporation is a Kolkata based young and dynamic Project Company, having PAN India operations along with an experience of 20 years.Having specialisation…” Source: RevenueBase Database · checked Sep 20, 2026
17	Stark Infraprojects	Indirect evidence	Kolkata, IndiaHQ checked Sep 20, 2026	11-50	28 contacts →
	Indirect evidence “STARK INFRAPROJECTS PRIVATE LIMITED is a construction company based out of 67/25 STRAND ROAD, KOLKATA, West Bengal, India.” Source: RevenueBase Database · checked Sep 20, 2026
18	Kushal Bharat Group	Indirect evidence	Kolkata, IndiaHQ checked Sep 20, 2026	n/a	25 contacts →
	Indirect evidence “Kushal Bharat Group: Driving Transformation, Empowering Communities, and Redefining Industries Established in Kushal Bharat Group began as a manufacturing unit of PP/HDPE woven…” Source: RevenueBase Database · checked Sep 20, 2026
19	Inter State OIL Carrier LTD	Indirect evidence	Kolkata, IndiaHQ checked Sep 20, 2026	51-200	23 contacts →
	Indirect evidence “Inter State Oil Carrier Limited engages in the transport industry in India.” Source: RevenueBase Database · checked Sep 20, 2026
20	Allied Infrastructures & Projects PVT LTD	Partial evidence	Kolkata, IndiaHQ checked Sep 20, 2026	51-200	20 contacts →
	Partial evidence “Allied Infrastructures & Projects Pvt Ltd Is A Name To Reckon With Civil Engineering Works, Turnkey Projects & Engineering Procurement Construction Projects.” Source: RevenueBase Database · checked Sep 20, 2026
21	Tyagi Corporation	Partial evidence	Kolkata, IndiaHQ checked Sep 20, 2026	51-200	17 contacts →
	Partial evidence “Tyagi Corporation is a leading international business conglomerate comprising companies working on the cutting edge of technology and innovation.” Source: RevenueBase Database · checked Sep 20, 2026
22	SUI Generis Infratech LLP	Partial evidence	Kolkata, IndiaHQ checked Sep 20, 2026	51-200	16 contacts →
	Partial evidence “Civil Infrastructure” Source: RevenueBase Database · checked Sep 20, 2026
23	Guin Infracon India Private Limited	Partial evidence	Kolkata, IndiaHQ checked Sep 20, 2026	1-10	3 contacts →
	Partial evidence “Infrastructure and Construction” Source: RevenueBase Database · checked Sep 20, 2026
24	Aadarsh Group	Partial evidence	Kolkata, IndiaHQ checked Sep 20, 2026	51-200	1 contacts →
	Partial evidence “Aadarsh Group started their operation with the objective to be in infrastructure and allied business.” Source: RevenueBase Database · checked Sep 20, 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: infrastructure conglomerates. 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 infrastructure conglomerates.
Partial evidence: Its own public description names part of infrastructure conglomerates, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name infrastructure conglomerates. 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 24 of 100 infrastructure conglomerates based in Kolkata, India

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Infrastructure conglomerates based in Kolkata, India at a glance

As of Sep 20, 2026

10.6%Verified-email coverage

130.6Average contacts per company

51-200Median size (employees)

238.0%Largest-city concentration · Mumbai

Sep 20, 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

10001+

Email recency for this list is measured across the whole India list rather than for Kolkata, so it is reported there. Company counts and contact totals on this page are exact for Kolkata, over 100 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 infrastructure conglomerates, 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 Kolkata, India whose own description of what they do matches “infrastructure conglomerates”. 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 infrastructure conglomerates), 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 infrastructure conglomerates, and records with no verified work email. Companies headquartered outside Kolkata 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, 1,386 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 20, 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.

Infrastructure conglomerates by metro in India

Infrastructure conglomerates in Mumbai238
Infrastructure conglomerates in New Delhi229
Infrastructure conglomerates in Hyderabad216
Infrastructure conglomerates in Pune147
Infrastructure conglomerates in Ahmedabad146
Infrastructure conglomerates in Chennai129
Infrastructure conglomerates in Kolkata100
Infrastructure conglomerates in Noida94
Infrastructure conglomerates in Delhi88
Infrastructure conglomerates in Bangalore84
Infrastructure conglomerates in Jaipur71
Infrastructure conglomerates in Gurgaon69
Infrastructure conglomerates in Gurugram57
Infrastructure conglomerates in Bengaluru53
Infrastructure conglomerates in Lucknow52
Infrastructure conglomerates in Nagpur48
Infrastructure conglomerates in Navi Mumbai45
Infrastructure conglomerates in Vadodara41
Infrastructure conglomerates in Bhopal37
Infrastructure conglomerates in Bhubaneswar33
Infrastructure conglomerates in Surat29
Infrastructure conglomerates in Indore28

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 infrastructure conglomerates, 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 infrastructure conglomerates are there based in Kolkata, India?

RevenueBase identified 100 infrastructure conglomerates headquartered in Kolkata, 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?

Shyam Metalics And Energy Limited, headquartered in Kolkata, tops this list with the largest team on record.

Which city has the most infrastructure conglomerates?

Mumbai leads with 238 headquartered companies, followed by New Delhi (229) and Hyderabad (216).

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 1,386 verified decision-maker contacts tracked across these 100 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 20, 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.