What is the difference between plastic lined galvanized steel pipe and steel plastic composite pipe?
Manufacturers have supporting professional pipe fittings; they should be connected in accordance with the design requirements of the connection method, threaded connections more economical.Plastic steel composite pipe features: (1). High mechanical strength and high extensibility; (two) good connection performance and no leakage; (three) special sealing of composite pipe; (four). The traditional process of installation, convenient for promotion; (five) health performance is good, can transport water; (six) high temperature, hot water, boiling water can be transported; (seven). No aging, long service life; (eight) low temperature brittleness, low expansion coefficient; (ten) or in the low price of steel plastic composite pipe composite stainless steel pipe is a pipe with polyethylene plastic pipe or stainless steel in the outer pipe lining, thus reduces the manufacturing cost, and ensure that the thickness to ensure the strength, the installation of steel plastic composite pipe and stainless steel composite galvanized steel pipe with polypropylene PP-R pipe cost difference is not much, close to the aluminum plastic composite tube, greatly lower than the pure stainless steel tube and pure copper.
Groove connections, of course. If the pipeline installation of more than DN100 (including 100) the best use of clamps (i.e. groove) relative to the connection of steel plastic composite pipe should cost is not expensive, but the fittings used in drinking water or drinking water must be hot galvanized, at the same time (coating for inner wall of health permit to health standards), pad connections must be food grade silicone rubber. If it is installed the best equipment interface of the pipe opening the whole prefabricated (at the same time, good pressure groove) then the whole hot galvanizing and coating for inner wall (not plastic lining). The clamping ring (i.e. groove) is used to connect the pipeline, the tightness is better, the test pressure is almost no leakage, and the construction quality is guaranteed better. Generally less than or equal to DN70 thread connection, greater than DN70 recommended groove connection (clamp connection). Pay attention to using plastic steel pipe manufacturer machinery, do not destroy the plastic layer. Flange connections are generally used in large bore. Should be dedicated fittings, usually flange connection and rib connection,
Generally speaking, the steel pipe in the composite pipe is nonstandard, the thickness is thinner, the big diameter adopts the wire connection, and the flange connection is more safe.
