Siam Yamato Steel Huai Pong plant

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Siam Yamato Steel Huai Pong plant (เหล็กสยามยามาโตะ (Thai)), also known as Siam Yamato Steel II (SYS II), is an electric arc furnace (EAF) steel plant operating in Maptaphut, Rayong, Thailand.

Location

The map below shows the exact location of the plant in Maptaphut, Rayong, Thailand:

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• Location: 9/9 Soi G-5, Pakorn Songkronraj Road, WHA Eastern Industrial Estate (Maptaphut), Huay Pong Sub-District, Muang District, Rayong 21150, Thailand
• Coordinates (WGS 84): 12.706642, 101.111703 (exact)

Background

Siam Yamato Steel Co., Ltd was established in 1992 to produce hot-rolled structural steel. It is a joint venture between Yamato Kogyo Co., Ltd. Mitsui & Co., Ltd, The Siam Cement Public Company Limited, Sumitomo Corporation (Thailand) Co., Ltd., and Mitsui & Co. (Thailand) Co., Ltd. The company owns and operates two steel plants (Siam Yamato Steel I and Siam Yamato Steel II) in the Muang District of Rayong, Thailand.

Plant Details

Table 1: General Plant Details

Plant status	Start date
Operating	2010

Table 2: Ownership and Parent Company Information

Parent company	Parent company PermID	Parent company GEM ID	Owner	Owner company PermID	Owner company GEM ID
Mitsui & Co Ltd [25.0%]; Siam Cement PCL [25.0%]; Sumitomo Corp [25.0%]; Yamato Kogyo Co Ltd [25.0%]	4295880574 [25%]; unknown [25%]; unknown [25%]; 4295878941 [25%]	E100001000930 [25%]; E100001010196 [25%]; E100001010091 [17.5%]; E100001000178 [8.2%]; E100001000429 [3.8%]; E100001000179 [3%]	Siam Yamato Steel Co Ltd	4296781017	E100000130802

Table 3: Process and Products

Steel product category	Steel products	Steel sector end users	ISO 14001	ISO 50001	Main production equipment	Detailed production equipment
semi-finished; finished rolled	H-beam, I-beam, channel, angle, cut beam, sheet pile	building and infrastructure	2021-02-23 00:00:00	2022-06-24 00:00:00	EAF	EAF (# unknown)

Table 4: Crude Steel Production Capacities (thousand tonnes per annum)

*Please see our Frequently Asked Questions page for an explanation of the different capacity operating statuses.

Capacity operating status*	Electric arc furnace steelmaking capacity	Nominal crude steel capacity (total)
operating	550 TTPA	550 TTPA

Articles and Resources

Additional data

To access additional data, including an interactive map of steel power plants, a downloadable dataset, and summary data, please visit the Global Steel Plant Tracker on the Global Energy Monitor website.

Resources

• Company website