Siam Yamato Steel Rayong
operatingEAF route · Maptaphut, Asia Pacific, Thailand
Siam Yamato Steel Rayong is a scrap-based steel plant: an electric arc furnace melts recycled steel scrap into new crude steel. The liquid steel is solidified into semi-finished shapes by continuous casting. The plant has a crude steel capacity of 500 thousand tonnes per year. Its main products are piling, channel, i-beam, angle, h-beam, beam.
Process Route
Timeline
Operating since 2010
Emissions
2025
0.02 Mt CO₂e
0.08 t CO₂e per tonne of steel
Typical EAF route: 0.5–0.7 t/t
Modelled estimate (Climate TRACE), not reported data. Methodology
Capacity (ttpa)
Crude Steel
500
EAF
500
Steel Units
Inputs & Energy
Power solar panels
Steel Products
piling, channel, i-beam, angle, h-beam, beam
Ownership
Owner Siam Yamato Steel Co Ltd
Parent Yamato Kogyo Co Ltd [64.2%]; Mitsui & Co Ltd [20.0%]; Siam Cement PCL [10.0%]; Sumitomo Corp [5.8%]
State ownership Partial
Country Context
Thailand crude steel production (USGS). Plant line shows nominal capacity, not output.
Learn the processes this plant uses
Nearby Plants
Other Yamato Kogyo Co Ltd; Mitsui & Co Ltd; Siam Cement PCL; Sumitomo Corp plants
Explore
Location
Maptaphut
Asia Pacific
Thailand
12.7066°, 101.1117°
At a Glance
- Route
- EAF
- Crude steel capacity
- 500 ttpa
- Commissioned
- 2010
- Products
- Semi-finished, finished rolled
- Certifications
- 2 recorded