borosilicate tube 1) with high temperature resistance 2)It is well material for labware,solor evacuated collector tube,handicraft or other high grade glassware usage 3)Dia: from6 400mm 4)Wall thickness:from0.8 12mm 5)the top can be fine cuttingor fire polished 6)We can make colortubes from 4mm to 120mm of diameter, and wall thickness can be from 08mm to 7mm 7)Our products range includes triangle tube, square tube, stripe tube, oval tube, glass rod and so on.