# Siam Cement and PTT Global Chemical form $5.5B petrochemical JV

Siam Cement (SCC) and PTT Global Chemical (PTTGC) agreed to merge their olefins and polyolefins units into a 186.5 billion baht ($5.5 billion) joint venture. PTTGC will hold 56% and SCGC 44%.

- Type: Partnership
- Announced: 2026-10-29
- Where: Thailand, Thailand
- Value: $5.50B
- Status: announced
- Products: olefins, polyolefins
- Sectors: [Specialty Chemicals](https://endata.com/sectors/specialty-chemicals.md), [Plastics and Polymers](https://endata.com/sectors/plastics-polymers.md)

## Companies

- [PTT Global Chemical](https://endata.com/companies/813.md) (partner)
- [Siam Cement](https://endata.com/companies/6339.md) (partner)

## Sources

- [factlen.com](https://factlen.com/news/siam-cement-and-ptt-global-chemical-forge-5-5-billion-petrochemical-joint-ventur-38754-a4719d78), 2026-10-29: "The consolidation creates a unified petrochemical giant designed to weather a prolonged industry downturn and optimize domestic production."

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Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.