... Low carbon steel tubeDouble wall (cut to length & in coil) O.D.:4.76mm,6.00mm,6.35mm,8.00mm,9.53mm ... .07mm 1.0±0.07mmCoating: copper, white zinc, yellow zinc, PVF,PVDF,PA11,PA12Single wall(cut to length & in coil)O.D.:4 ... .76mm,6.00mm,6.35mm,8.00mm,9.53mm,10.00mm 12mmThickness: 0.71±0.07mm 1.0±0 ...