Galvanized pipe is usually used for indoor water supply. Outdoor water supply pipes are usually laid at <0.7m depth and must be below the local freezing line. Working pressure <0.6MPa.
Installation requirements of
galvanized water pipe:
(1) The pipes, fittings and connecting methods for pipelines, pipe fittings and connecting pipelines for firefighting and domestic water sharing must comply with the design requirements or the construction specifications; pipes and pipe fittings shall be galvanized with all pipe walls and shall not be non-galvanized or galvanized only, Galvanized inside the pipe, pipe fittings used in domestic water supply pipe.
(2) Where the galvanized pipe used for water supply is connected with the pipe fittings, it shall be connected by means of threaded fasteners and welded connections shall not be used. Otherwise, the galvanized layer will be damaged or the inner diameter of the small pipe will be blocked by the welding torch.
(3) Prior to installation, carefully clean the pipes, pipe fittings, rust, dirt and other impurities, and remove the burrs at the interface.
(4) When pipe prefabrication and installation construction, the port or rejection of the pipe should be blocked in time.
(5) In order to ensure the water source is not polluted, after the water tank is installed in place, the rust, anticorrosive and closed stamped should be promptly carried out according to the quality requirements; the hot water pipe is prohibited from being directly connected to the sewage pipe, resulting in the pollution of the domestic water source.
(6) In order to ensure unblocked water supply and blockage, the water supply pipelines should be installed strictly according to the specified slope. The spacing of the pipe racks should be correct, and the pipes should not be bent downwards or down-sloped.
(7) To prevent drinking water is not polluted, the laying of underground water supply pipe should be placed on the top of the drainage pipe, such as after the construction or change, expansion of the water supply pipe must be laid under the drainage pipe should be added casing, casing two side should be closed tightly.
