... house TAMGLASS tempered furnace 3-19mm low-iron house glass Export to over 20 country ... CCC,meet EN/BS/NZS/ANSI tempered Low-iron glass houseTempered glass is made from annealed glass ... which the glass is heated till its softening point about 650 degrees and then quenching quickly to become ... 4800mmb) Thickness from 3mm to 19mmc) Color, clear, low-iron, F green, Natural green, Weihai blue, Ford blue, ...