Company lists · Data refreshed September 2026

Top 23 Downstream petroleum construction firms based in Australia

Name: Downstream petroleum construction firms based in Australia
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 157 companies tracked

RevenueBase identified 157 downstream petroleum construction firms headquartered in Australia as of September 2026 and tracks 4,166 professional contacts across them, including 1,633 with verified work emails. Perth is the largest hub.

This list covers downstream petroleum construction firms headquartered in Australia, 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 16, 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 16, 2026 86% judged on-target in blind review

157Companies

4,166Contacts tracked

1,633Verified emails

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The 23 largest downstream petroleum construction firms based in Australia

Ranked by team size

Top 23 of 157 downstream petroleum construction firms based in Australia, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to downstream petroleum construction 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	RSGX	Partial evidence	Rydalmere, AustraliaHQ checked Sep 16, 2026	1,001-5,000	455 contacts →
	Partial evidence “RSGx is a trusted partner, providing innovative mechanical and electrical construction and engineering solutions with a focus on powering energy transition.” Source: RevenueBase Database · checked Sep 16, 2026
2	Jord International	Indirect evidence	Sydney, AustraliaHQ checked Sep 16, 2026	201-500	426 contacts →
	Indirect evidence “Jord International is a global leader in process engineering, designing, manufacturing, commissioning, and servicing bespoke plant and systems for a wide range of industries in…” Source: RevenueBase Database · checked Sep 16, 2026
3	SUN Engineering	Indirect evidence	Brisbane, AustraliaHQ checked Sep 16, 2026	201-500	201 contacts →
	Indirect evidence “Sun Engineering was established in 1975.” Source: RevenueBase Database · checked Sep 16, 2026
4	Walz Group	Partial evidence	Gladstone, AustraliaHQ checked Sep 16, 2026	201-500	177 contacts →
	Partial evidence “An industry leader in specialist construction and maintenance services for the resources, energy and infrastructure sectors.” Source: RevenueBase Database · checked Sep 16, 2026
5	Legeneering	Indirect evidence	Perth, AustraliaHQ checked Sep 16, 2026	51-200	166 contacts →
	Indirect evidence “Legeneering Australia is a dynamic Engineering Company specializing in repair of oil & gas facilities.” Source: RevenueBase Database · checked Sep 16, 2026
6	Global Engineering & Construction	Partial evidence	Brisbane, AustraliaHQ checked Sep 16, 2026	51-200	104 contacts →
	Partial evidence “As a leading provider of construction and maintenance services within the oil, gas and energy sectors, GEC provides its clients with a multi-disciplinary high quality operation…” Source: RevenueBase Database · checked Sep 16, 2026
7	Taylors Engineering	Partial evidence	Naval Base, AustraliaHQ checked Sep 16, 2026	201-500	69 contacts →
	Partial evidence “Taylors Engineering and Welding Services offer construction, engineering and specialised workshop solutions for the petrochemical and mining industry.” Source: RevenueBase Database · checked Sep 16, 2026
8	Brockman Engineering	Indirect evidence	Norlane, AustraliaHQ checked Sep 16, 2026	51-200	62 contacts →
	Indirect evidence “For over 100 years, Brockman Engineering has delivered critical infrastructure across Australia.” Source: RevenueBase Database · checked Sep 16, 2026
9	MIZCO	Indirect evidence	Malaga, AustraliaHQ checked Sep 16, 2026	51-200	58 contacts →
	Indirect evidence “MIZCO is a diversified Western Australian owned and operated Electrical / Mechanical Building Services Company involved in the Commercial, Industrial, and Oil & Gas Sectors.” Source: RevenueBase Database · checked Sep 16, 2026
10	REI Process PTY LTD	Indirect evidence	Coniston, AustraliaHQ checked Sep 16, 2026	11-50	51 contacts →
	Indirect evidence “REI Process offers custom designed and fabricated process packages for the Oil & Gas, Refinery, Petrochemical, Tank, Storage, Mining and other Industries.” Source: RevenueBase Database · checked Sep 16, 2026
11	Liquip Victoria Fuelcraft PTY LTD	Indirect evidence	Derrimut, AustraliaHQ checked Sep 16, 2026	51-200	49 contacts →
	Indirect evidence “Welcome to Liquip Victoria – Victoria’s specialist Road Tanker equipment installer and distributor.” Source: RevenueBase Database · checked Sep 16, 2026
12	Mtis Group	Indirect evidence	Salisbury, AustraliaHQ checked Sep 16, 2026	11-50	48 contacts →
	Indirect evidence “MTIS Group delivers world-class, locally executed industrial projects, life-cycle services, and critical product fulfilment for the resources sector.” Source: RevenueBase Database · checked Sep 16, 2026
13	Haines Electrical	Partial evidence	Darra, AustraliaHQ checked Sep 16, 2026	51-200	39 contacts →
	Partial evidence “Haines Electrical is a proudly Queensland owned construction and engineering organisation who has been servicing the commercial and industrial sectors since 1985.” Source: RevenueBase Database · checked Sep 16, 2026
14	Obadare Group	Indirect evidence	Toowoomba, AustraliaHQ checked Sep 16, 2026	11-50	38 contacts →
	Indirect evidence “Obadare is a privately owned, Australasian specialist manufacture, machining and maintenance enterprise providing drilling and completions, oilfield engineering, general…” Source: RevenueBase Database · checked Sep 16, 2026
15	Xtreme Engineering PTY LTD	Partial evidence	Callemondah, AustraliaHQ checked Sep 16, 2026	51-200	38 contacts →
	Partial evidence “XTREME ENGINEERING PTY LTD is an engineering supply, manufacture, construction and maintenance company based at Callemondah, Queensland, Australia.” Source: RevenueBase Database · checked Sep 16, 2026
16	Eftech International	Indirect evidence	Jandakot, AustraliaHQ checked Sep 16, 2026	51-200	37 contacts →
	Indirect evidence “Eftech International Pty Ltd (Eftech) was established in 2014 in Perth, Western Australia, offering a multi-discipline and total-solutions services for Oil and Gas (Upstream and…” Source: RevenueBase Database · checked Sep 16, 2026
17	Plummers Project Services	Indirect evidence	Maddington, AustraliaHQ checked Sep 16, 2026	51-200	37 contacts →
	Indirect evidence “STRUCTURAL - MECHANICAL - ELECTRICAL - PIPING \|\|(a wholly owned subsidiary of Plummers Industries Pty Ltd) Plummers Industries Pty Ltd are the largest privately owned electrical…” Source: RevenueBase Database · checked Sep 16, 2026
18	Sudel Industries PTY LTD	Partial evidence	Whyalla, AustraliaHQ checked Sep 16, 2026	51-200	35 contacts →
	Partial evidence “Sudel Industries Pty Ltd, established in 1991, is a construction specialist in electrical instrumentation, communication and project solutions for a wide range of industries.” Source: RevenueBase Database · checked Sep 16, 2026
19	Innovative Energy Solutions	Indirect evidence	Canning Vale, AustraliaHQ checked Sep 16, 2026	51-200	33 contacts →
	Indirect evidence “We have a highly skilled team of trained professionals including electricians, technicians, project managers and administration staff.” Source: RevenueBase Database · checked Sep 16, 2026
20	The PSA Group	Indirect evidence	Campbellfield, AustraliaHQ checked Sep 16, 2026	51-200	31 contacts →
	Indirect evidence “The PSA Group is a technical field services company with our business specialty being around the installation and maintenance of retail and depot fuel storage and dispensing…” Source: RevenueBase Database · checked Sep 16, 2026
21	Kobalt ENC PTY LTD	Partial evidence	West Ryde, AustraliaHQ checked Sep 16, 2026	51-200	29 contacts →
	Partial evidence “Kobalt ENC operates as a professional and specialised solution provider in resources, energy, constructions, gas and oil, mining and engineering industry nationwide.” Source: RevenueBase Database · checked Sep 16, 2026
22	Intelligas	Indirect evidence	Berrinba, AustraliaHQ checked Sep 16, 2026	51-200	25 contacts →
	Indirect evidence “IntelliGas, a Queensland-based innovator of targeted products and services that enhance production, minimise emissions and reduce costs across all aspects of gathering systems…” Source: RevenueBase Database · checked Sep 16, 2026
23	Edms Australia	Partial evidence	Bungalow, AustraliaHQ checked Sep 16, 2026	51-200	24 contacts →
	Partial evidence “EDMS Australia (EDMS) is an Engineering, Construction and Project Management Company, established on the 1st December 2005.” Source: RevenueBase Database · checked Sep 16, 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: downstream petroleum construction 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 downstream petroleum construction firms.
Partial evidence: Its own public description names part of downstream petroleum construction firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name downstream petroleum construction 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 23 of 157 downstream petroleum construction firms based in Australia

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Downstream petroleum construction firms based in Australia at a glance

As of Sep 16, 2026

39.2%Verified-email coverage

26.5Average contacts per company

11-50Median size (employees)

15.9%Largest-city concentration · Perth

Sep 16, 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 Australia, so it is reported there. Company counts and contact totals on this page are exact for Australia, over 157 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 downstream petroleum construction 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 Australia whose own description of what they do matches “downstream petroleum construction 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 downstream petroleum construction 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 downstream petroleum construction firms, and records with no verified work email. Companies headquartered outside Australia 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, 1,633 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 16, 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.

Downstream petroleum construction firms by metro

Downstream petroleum construction firms in Perth25

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 downstream petroleum construction 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 downstream petroleum construction firms are there based in Australia?

RevenueBase identified 157 downstream petroleum construction firms headquartered in Australia 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?

RSGX, headquartered in Rydalmere, tops this list with the largest team on record.

Which city has the most downstream petroleum construction firms?

Perth leads with 25 headquartered companies, followed by Brisbane (14) and Melbourne (4).

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 1,633 verified decision-maker contacts tracked across these 157 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 16, 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.