This standard specifies the requirements, test methods, inspection rules, signs, packaging, transportation and storage of drawn seamless copper water pipes and copper air pipes. This standard is applicable to seamless circular copper pipes for conveying drinking water, sanitary water, civil natural gas, coal gas, oxygen and other media that have no corrosive effect on copper, with a nominal outer diameter not greater than 219 mm. Copper water pipes are generally connected to pipe joints by welding, flaring or pressing.