aluminum cylinder tube

Aluminum cylinder technic standard:
aluminum alloy temper 6063-T5
aluminum content Si:0.2-0.6, Mg:0.45-0.9, Fe: 0.35, Cu:0.1
pull resistance 160/MPa
bending resistance 110/MPa
stretching ratio 8
cylinder hardness 8-12
anodization film 20-50um
Microscopic hardness HV200-400kg/m2
insulation 1000KΩ
voltage breakdown 450V
inner size tolerance H9-10
inner size oval tolerance 0.05-0.09MM
thickness tolerance +/-8%
length tolerance +/-3mm
roughness in inner surface Ra 0.2-0.4