ASTM A511 stainless steel pipe construction and installation

　　Steel pipe manufacturers introduce the construction and installation process of ASTM A511 stainless steel pipes.

　　1) ASTM A511 Stainless steel pipes and fittings should not be in direct contact with cement, cement mortar or concrete. When the pipeline is concealed, anti-corrosion tape should be wrapped on the outer wall of the pipeline or plastic-coated thin-walled stainless steel pipe should be used.

　　2) When concealed pipes are filled with cement mortar, insulation materials should be used to ensure that there is a gap between the cement mortar and the pipes. Enables pipes used in concealed applications to expand and contract freely.

　　3) Plastic-coated pipes should be used for burial to avoid acid and alkali corrosion on the outer wall of the pipe or damage to the pipe by sharp and hard debris. Other wrapping materials can also be used for anti-corrosion measures, such as wrapping two layers of polyethylene tape or two layers of vinyl chloride tape, wrapping two layers of asphalt paint (or epoxy resin), and fiberglass plastic cloth for anti-corrosion.

　　4) The pipeline should be reasonably equipped with expansion and contraction compensation devices and brackets (fixed brackets and movable brackets) to control the expansion and contraction direction or compensation of the pipeline. When the length of the straight section of an exposed or non-concealed hot water stainless steel pipe exceeds 10 to 15 meters, pipeline axial compensation measures should be taken. When the nominal diameter is greater than 50mm, stainless steel corrugated expansion joints or stainless steel linear temperature compensators should be installed.

　　5) Stainless steel pipes used for water supply in exposed buildings should take anti-condensation measures, and stainless steel pipes used for hot water should be insulated.

　　6) Pipes and pipe fittings are uniformly supplied by suppliers. Different grades of stainless steel are not suitable for welding.

　　7) When connecting ASTM A511 stainless steel pipes to threaded valves, faucets, water meters and other accessories, they must not have threads and should be transitioned through threaded accessories such as adapters.

　　8) Oil pollution will cause the rubber sealing ring to deteriorate, and sharp objects will cause water leakage when colliding with pipes and fittings. You must pay attention during construction.

　　9) After the pipeline is installed and the pressure test passes, it should be flushed with low-chloride ion water and disinfected with 0.03% potassium permanganate aqueous solution.