... user. aluminum tubes and pipes used in industrial.Basic specification of large size of industrial Profiles are as belowed; TypeAlloyTemperCircumcircle DiametermmStandardindustrial profiles2xxx ... /T6892GB5237GJB25071xxx,3xxxx,5xxx seriesH112,O,F10320GB/T6892GJB2507TypeAlloyTemperCircumcircle DiametermmStandardMin.Max.industrial profiles1xxx,2xxx5,xxx,6xxx,7xxx seriesH112100530GBn2221xxx,2xxx,5xxx,7xxx ...