Siemens to supply bar rolling mill to Thai Steel - Siemens Global .Jul 2, 2014 . Ltd. (Thai Steel) to supply a new bar rolling mill for its plant in Rayong, Thailand. The rolling mill will produce around 500000 metric tons of.rolling mill in thailand,About Us - MILLCON STEEL PLCGroup of Millcon Steel Plc. (MILL) is one of Thailand's leading producers and . recognized under Automation PLC Rolling Mill and Automation PLC Furnace.