IRPC on Stock Exchange of Thailand

IRPC Public Company Limited

Logo: IRPC Public Company Limited, Public domain, via Wikimedia Commons⁴

Thai petroleum and petrochemical company

IRPC Public Company Limited or simply IRPC (Integrated Refinery & Petrochemical Complex) (Thai: ไออาร์พีซี) is a Thai Public SET-listed Petroleum and Petrochemical company. It is a subsidiary of PTT Group, formerly Thai Petrochemical Industry Public Company Limited or "TPI", which was founded in 1978 by the Leophairatana family.² It was founded by TPI Polene.¹ It is part of PTT Public Company Limited.¹ Wikipedia text CC BY-SA 4.0

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Last updated Oct 21, 2026.

Overview

1978Founded¹

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TickerIRPC on Stock Exchange of Thailand¹
Industrypetroleum industry¹
HeadquartersChatuchak¹
Websitewww.irpc.co.th
Legal formpublic limited company¹
LEI254900IKV8DJ1C05JB68³
StatusActive³
LEI statusIssued and current³
Registered address299 หมู่ 5, 21000 ระยอง, Thailand³
Registered withDepartment of Business Development (Ministry of Commerce), 0107537002567³

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Corporate structure

IRPC Public Company Limited is part of a group headed by PTT Public Company Limited. 20 entities, 5 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

PTT Public Company Limited Bangkok, Thailand
- IRPC Public Company Limited ระยอง, Thailand
- PTT Global Chemical Public Company Limited กรุงเทพฯ, Thailand
- Bangchak Petroleum Public Company Limited Subsidiary · Chatuchak
- NatureWorks Subsidiary · Wilmington, Delaware, United States
- PTT Aromatics and Refining Public Company Limited Subsidiary
- PTT Chemical Public Company Limited Subsidiary
- PTT Exploration and Production Public Company Limited Subsidiary · กรุงเทพฯ, Thailand
  - Partex Subsidiary · Lisbon
  - AI and Robotics Ventures Company Limited (บริษัท เอไอ แอนด์ โรโบติกส์ เวนเจอร์ส จำกัด) Subsidiary · Bangkok, Thailand
  - PTTEP Siam Limited (บริษัท ปตท.สผ.สยาม จำกัด) Subsidiary · กรุงเทมหานคร, Thailand
  - PTTEP Treasury Center Company Limited (บริษัท ปตท.สผ. ศูนย์บริหารเงิน จำกัด) Subsidiary · กรุงเทพฯ, Thailand
- Thai Oil Subsidiary · Bangkok
- Global Power Synergy Stake · 42.53%
- PTT INTERNATIONAL TRADING USA INC. Subsidiary · 100% · Wilmington, Delaware, United States
- ALLNEX RESINS INDIA PRIVATE LIMITED Subsidiary · Mumbai, India
- PTT INTERNATIONAL TRADING LONDON LTD Subsidiary · London, United Kingdom
- PTT LNG Company Limited Subsidiary · Thailand
- PTT OIL AND RETAIL BUSINESS PUBLIC COMPANY LIMITED (บริษัท ปตท. น้ำมันและการค้าปลีก จำกัด (มหาชน)) Subsidiary · กรุงเทพมหานคร, Thailand
- PTT TREASURY CENTER COMPANY LIMITED (บริษัท ปตท. ศูนย์บริหารเงิน จำกัด) Subsidiary · กรุงเทพฯ, Thailand

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

The story

Founded by TPI Polene in 1978.¹

Products and brands

IRPC Petroleum and Petrochemical Plant Group consists of 3 main parts which are:

Oil refinery; With a refining capacity of 215,000 barrels per day can produce a variety of petroleum products such as liquefied petroleum gas (LPG), naphtha, gasoline, diesel oil, fuel oil, solution and asphalt.

Lube base oil refinery; Producing basic lubricant products and try residues according to the characteristics and suitability for use as follows:

60 SN is used as a raw material for the production of transmission oil such as transformers.

Read the full text

150 SN is used as a lubricant raw material for manufacturing industries such as the automobile industry.

500 SN is used as a raw material for almost every lubricant industry.

150 BS is used in industries and machines with high friction, such as engines, trucks, trains etc.

Petrochemical Plant Group, consisting of upstream to downstream petrochemical plants which brought naphtha and liquefied petroleum gas from the oil refinery to be used as feedstock for primary petrochemical products, which are olefins and aromatics which is used to produce downstream petrochemical products such as plastic resins to sell to plastic forming operators and the continuous industry.

From Wikipedia’s article on IRPC, shared under CC BY-SA 4.0.⁵

Subsidiaries and ownership

Parent company

PTT Public Company Limited

From Wikidata.¹

Timeline

Mar 17, 1995Went public Listed on Stock Exchange of Thailand¹
1978Founded Founded¹

Sources

The numbers on this page point here. Each one links to the record it came from.

1
WikidataIRPC Public Company Limited on Wikidata
2
WikipediaIRPC Public Company Limited on Wikipedia
3
GLEIFIRPC Public Company Limited LEI record (254900IKV8DJ1C05JB68)
4
Wikimedia CommonsIRPC Public Company Limited logo by IRPC Public Company Limited, Public domain
5
WikipediaIRPC Public Company Limited on Wikipedia (revision used)