Color 3.3 Borosilicate Glass tube 1)OD:8mm-315mm 2)WT:1mm-9mm 3)Color:black,white,blue,red,pink,purple,yellow... Our company ... rods. The OD of glass is between 8mm and 400mm, and that of the glass rods is from 3.5mm to 42mm. Our ... company, the biggest borosilicate glass factory in Zibo, has ...