This standard specifies the requirements, test methods, inspection rules, marking, packaging, transportation and storage of seamless circular copper tubes for electric conduction. This standard applies to seamless circular copper tubes for electric furnaces, motors and other conductive purposes.
GB/T 19850-2005 history
2013GB/T 19850-2013 The seamless copper tubes for electrical purposes
2005GB/T 19850-2005 The seamless round copper tubes for electrical purposes