... 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 ... glass or heat strengthened glass Steps of Manufacturing Step I first and foremost the right glass combination ... 4800mmb) Thickness from 3mm to 19mmc) Color, clear, low-iron, F green, Natural green, Weihai blue, Ford blue, ...