... flexibility.It is widely used in insulating protection of H&N Grade automobileshipbuidingelectrial machinery ,home appliance,elctric&heat equipment ,special lightware and ... diameter measurement: Inside diameterThe minimum Wall thicknessRangeToleranceA gradeB,C,grade0.5-2.5mm+0.25-0.00mm0.38mm0.20mm3.0-4 ...