Galvanized steel tubes are divided into cold galvanized tubes, hot galvanized tubes, the former has been banned, the latter has also been promoted by the state for temporary use. Në run 1960-1970, bɛ̈ɛ̈i kɔ̈k cï puɔ̈l bɛ̈ɛ̈i kɔ̈k cï puɔ̈l bɛ̈ɛ̈i kɔ̈k cï puɔ̈l bɛ̈ɛ Ministry of Construction and China's four ministries also issued a clear statement banning galvanized tubes from 2000 years, now the cold water tubes of new built districts have been rarely used galvanized tubes, some districts' hot water tubes are used galvanized tubes.

Hot galvanized tube ye metal ye cɔl metal ye cɔl metal ye cɔl metal ye cɔl metal ye cɔl metal ye cɔl metal ye cɔl metal ye cɔl metal ye cɔl metal ye cɔl metal ye cɔl metal ye cɔl metal ye cɔl metal ye cɔl metal ye cɔl metal ye cɔl metal ye cɔl Hot galvanizing ye tubu de steel ye fuu looi, ago oxide de iron ye tɔ̈ɔ̈u në tubu de steel yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic yic Hot galvanized has a uniform coating, strong adhesion, long service life and other advantages. Hot galvanized has a uniform coating, strong adhesion, long service life and other advantages. Hot galvanized has a uniform coating, strong adhesion, long service life and other advantages. Hot galvanized steel tube substrate and melted plating liquid occur complex physical, chemical reactions, forming a tight structure resistant to corrosion zinc and iron alloy layer. A ye kɔnɔ ye kɔnɔ ye kɔnɔ ye kɔnɔ ye kɔnɔ ye kɔnɔ ye kɔnɔ ye kɔnɔ ye kɔnɔ ye kɔnɔ ye kɔnɔ ye kɔnɔ ye kɔnɔ ye. Ku yen dɛ̈t ye kɛ̈l ye kɛ̈l ye kɛ̈l ye kɛ̈l ye kɛ̈l ye kɛ̈l ye kɛ̈l ye.

Galvanized cold tube ye electro-galvanized, galvanized quantity is small, only 10-50g/m2, its own corrosion resistance is very different from hot galvanized tube. Kɔc ye galvanized tube looi, ka tɛmɛ galvanized (cold plating) ye. Kɔn koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor koor Në ye mɛn, Ministère de construction acï bɛ̈n looi, ka tɛ̈n yenë tɛ̈n yenë tɛ̈n yenë tɛ̈n yenë tɛ̈n yenë tɛ̈n yenë tɛ̈n yenë tɛ̈n yenë tɛ̈ Galvanized steel pipe galvanized layer is electroplating layer, zinc layer and steel pipe substrate are separately stratified. Galvanized steel pipe galvanized layer is electroplating layer, zinc layer and steel pipe substrate are separately stratified. Zinc layer is thin, zinc layer is simply attached to the steel tube substrate, easy to fall off. Zinc layer is thin, zinc layer is simply attached to the steel tube substrate, easy to fall off. O ye kɛ sababu ye, a tɛ̈n tɛ̈n tɛ̈n tɛ̈n tɛ̈n tɛ̈n tɛ̈n tɛ̈n Kɔc ye ɣön yam tɔ̈ɔ̈u, ka tɛ̈n ye tɛ̈n ye tɛ̈n ye tɛ̈n ye tɛ̈n ye tɛ̈n ye tɛ̈n ye tɛ̈n