TSIC Activity
Manufacture of iron and steel sheets
ประกอบกิจการโรงงานผลิตเหล็ก โรงงานรีดและหล่อหลอมโลหะ โรงงานสังกะสี โรงงานประกอบรถยนต์ โรงงานต่อตัวถังรถยนต์
What this activity covers
This activity involves the production of various types of iron and steel sheets through rolling processes.
- Iron and steel sheets — Production of iron and steel sheets by hot and cold rolling
- Stainless steel sheets — Production of hot and cold rolled stainless steel sheets
- Galvanized steel sheets — Production of galvanized steel sheets
- Tin-plated steel sheets — Production of tin-plated steel sheets
What companies here also do
Seen in real company registrations under this code — beyond the official definition, so licensing may differ.
- Metal product manufacturing — Manufacturing and processing various metal products
- Steel trading — Producing and selling various types of steel products
- Metal processing — Operating factories for metal processing
Industry at a glance
as of 23 ก.ค. 69The whole registered industry under this activity, every registration year, from the DBD DataWarehouse.
net profitrevenue
Foreign investment
new registrations · 2026 YTDBased on few new registrations this year — read as a rough signal only.
2 of the 5 largest companies here are foreign-owned Thailand subsidiaries.
New in 2026
registrations, YTD
Registered capital
since year-end
Largest by revenue
Latest filed-year revenue, not a multi-year total
Largest by registered capital
- 1NS-Siam United Steel Co., Ltd.Rayong฿13.0B
- 2Posco-Thainox Public Company LimitedBangkok฿7.8B
- 3Thai Cold Rolled Steel Sheet Co., Ltd. (Public Company Limited)Bangkok฿4.8B
Source: Department of Business Development DataWarehouse. Financial figures are combined totals of companies that filed statements; revenue and profit shown for the latest three reporting years.
Companies registered since 2022
Browse allNew DBD registrations under this activity since 2022, the period the registry snapshot covers, not the full historical register.
New registrations per year
Largest active companies by registered capital
- MERIDIAN LM (THAILAND) CO., LTD.Private limited company · สมุทรปราการ฿400.0M
- THAI HO YA TECH CO., LTD.Private limited company · กรุงเทพมหานคร฿80.0M
- SUPER STEEL SERVICE CENTER CO., LTD.Private limited company · ปทุมธานี฿50.0M
- DONG FANG HONG TECHNOLOGY (THAILAND) CO., LTD.Registered ordinary partnership · ชลบุรี฿10.0M
- SINCHANGTAI TECHNOLOGY (THAILAND) CO., LTD.Private limited company · กรุงเทพมหานคร฿5.0M
- T AND M ENGINEERING CO., LTD.Registered ordinary partnership · ระยอง฿5.0M
- JINSIANG METAL MATERIAL (THAILAND) CO., LTD.Private limited company · นนทบุรี฿5.0M
- HE YI CLEAN (THAILAND) CO., LTD.Private limited company · กรุงเทพมหานคร฿5.0M
- PONG BORIBOON PHATTHAKRIT GROUP CO., LTD.Limited partnership · อุบลราชธานี฿5.0M
- บจ.สยามบลาสต์ แมนูแฟคเจอริ่ง จำกัดPrivate limited company · กาญจนบุรี฿5.0M
- MOUNT THAI BUILDING MATERIALS (THAILAND) CO., LTD.Registered ordinary partnership · ชลบุรี฿4.0M
- บจ.โปรเวนเวิร์ธ แอสโซซิเอทส์ จำกัดPrivate limited company · ชลบุรี฿4.0M
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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