Tumbol Watket, Amphoe Mueang Chiang Mai, Chiang Mai 50000
series available: 2.6mm, 3.2mm, 4.0mm; including b-14, b-17, lb-52, lh-2000, stainless steel series (nc-38, nc-39l), and hardfacing series (hf-240 to hf-800).
yawata: high-performance rods including ft-51 (for thin steel) and s-13 (specialized for galvanized steel).