THAILANDSICThailand Standard Industrial Classification

TSIC Activity

25111

Manufacture of metal frameworks for construction

ประกอบกิจการรับเหมาก่อสร้าง ต่อเติม ติดตั้งโครงเหล็ก ซ่อมแซมและบำรุงรักษา งานเหล็กและงานอลูมิเนียมทุกประเภท

Definition

Manufacture of products with metal structures and other components for use in construction, such as high-rise buildings, ship masts, steel scaffolding, antennas, bridges and bridge parts, etc. Manufacture of metal structures for industrial use, such as structures for metal smelting furnaces, lifting and gripping tools for forklifts, etc.

Excluded from this code

  • Manufacture of parts for ship boilers or power boilers. See activity 25130.
  • Production of railway installation equipment. See activity 25999.
  • Manufacture of ship components. See activity 30110.
  • Manufacture of structural metal structures such as garages or sheds. See activity 25112.

Foreign ownership

Not on the Foreign Business Act restricted lists.

The Foreign Business Act B.E. 2542 (1999) restricts majority foreign ownership only for the activities named in its three annexed Lists. This activity is not among the mappings we hold, so a foreign investor can generally hold up to 100% of the equity, subject to any sector-specific licence and to minimum-capital rules (typically THB 2 million per restricted business, or THB 3 million where a Foreign Business Licence applies).

If an activity is restricted, the routes to foreign majority

  • BOI promotion — the Board of Investment can grant up to 100% foreign ownership for promoted activities, with tax and non-tax incentives.
  • Foreign Business Licence — permission from the Ministry of Commerce to operate a List 2 or List 3 activity as a foreign-majority company.
  • US Treaty of Amity — US nationals may hold majority ownership in most activities, treated as Thai nationals for FBA purposes.

This is general guidance, not legal advice, and mappings are auto-derived. The schedules of the Foreign Business Act B.E. 2542 are the authority; verify against the Act, or ask us to check your specific activity. See the full foreign ownership reference.

See the full foreign ownership reference for all three FBA lists.

Companies registered since 2022

Browse all

New DBD registrations under this activity since 2022, the period the registry snapshot covers, not the full historical register.

180
Registered
since 2022
173
Still active
7
Dissolved
฿1.0M
Median capital
of active

New registrations per year

2022peak 53 in 20222026

Largest active companies by registered capital

Source: Department of Business Development (DBD) new-registration records, 2022 to present. Counts cover companies first registered in that window, reflect the latest snapshot load, and may lag the live register.

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