(1), water pipes with green paint;
(2) The fire water supply pipeline shall be painted with red paint;
(3) Ductile iron storm sewer shall be painted with black paint;
(4) Indoor plastic rainwater and sewage pipes do not need to be painted separately, and the external wall drainage pipes should be painted with paint or paint with the same color as the external wall paint or ceramic tile (when the external wall is white paint or ceramic tile, the external wall of plastic pipes need not be painted);
5], pressure drain pipe should be painted with black or gray paint;
[6], water system pipeline should be painted with light green paint.
(7) Cooling water system: dark blue paint for high temperature and light blue paint for low temperature;
Being, gas pipe with yellow paint.