TMT Steel Public Company Limited, together with its subsidiaries, engages in the manufacture, processing, distribution, and sale of structural steel plates and sheets primarily in Thailand. The company offers flat products, including hot rolled cut sheets and plates, hot rolled plates, slitted coils, flat bars, and checkered plates; and hot rolled steel sections comprising H-beams/wide flanges, I-beams, channels, angles, cut-beams, round bars, and deformed bars. It also provides cold formed products, such as round, square, rectangular, and pressure-resistant carbon steel pipes. The company was formerly known as Thai Metal Trade Public Company Limited. TMT Steel Public Company Limited was founded in 1976 and is headquartered in Bangkok, Thailand.