What does the country have to specify for office decoration?
305 refers to the diameter, the difference between the name suggests, but the large diameter PVC pipe to the majority of
if it is the line, then "3" refers to the tube Type, 2 - light, 3 - medium, 4 - heavy, "05", "15" refers to the temperature of the pipe, 05 refers to the use of the installation temperature of not less than -5 ℃, The temperature is not lower than -15 ℃, in line tube standard JG-3050 in a more detailed description Please accept
Galvanized with tube: 1) color galvanized pipe with a little hair, 2) Weight: 6 meters long with 5
