鍍鋅方管的生產加工和應用，在歷經很多年的社會經驗中早已慢慢建立了相對應的方式，冷鍍鋅管因商品缺點慢慢撤出了應用的演出舞臺。熱鍍鋅鋼管是使熔化金屬材料與鐵基材反映而造成鋁合金層，進而使基材和涂層二者緊密結合。熱浸鍍鋅是先將方鋼管開展酸洗鈍化，為了很好地除去方鋼管表層的化合物，酸洗鈍化后，根據氯銨或氯化鎂溶液或氯銨和氯化鎂混和溶液槽中開展清理，隨后送進熱浸鍍槽中。熱浸鍍鋅具備涂層勻稱，粘合力強，使用期限長等優勢。

The production, processing, and application of galvanized square pipes have gradually established corresponding methods after many years of social experience, and cold galvanized pipes have gradually withdrawn from the stage of application due to product shortcomings. Hot dip galvanized steel pipes are formed by reacting molten metal materials with iron substrates, resulting in an aluminum alloy layer that tightly combines the substrate and coating. Hot dip galvanizing is the process of first pickling and passivating square steel pipes. In order to effectively remove the compounds on the surface of the square steel pipes, after pickling and passivation, cleaning is carried out in a tank containing ammonium chloride or magnesium chloride solution or a mixture of ammonium chloride and magnesium chloride solution, and then sent to the hot-dip galvanizing tank. Hot dip galvanizing has advantages such as uniform coating, strong adhesion, and long service life.

鍍鋅方管的生產加工和應用，在歷經很多年的社會經驗中早已慢慢建立了相對應的方式，冷鍍鋅管因商品缺點慢慢撤出了應用的演出舞臺。熱鍍鋅鋼管是使熔化金屬材料與鐵基材反映而造成鋁合金層，進而使基材和涂層二者緊密結合。熱浸鍍鋅是先將方鋼管開展酸洗鈍化，為了很好地除去方鋼管表層的化合物，酸洗鈍化后，根據氯銨或氯化鎂溶液或氯銨和氯化鎂混和溶液槽中開展清理，隨后送進熱浸鍍槽中。熱浸鍍鋅具備涂層勻稱，粘合力強，使用期限長等優勢

The production, processing, and application of galvanized square pipes have gradually established corresponding methods after many years of social experience, and cold galvanized pipes have gradually withdrawn from the stage of application due to product shortcomings. Hot dip galvanized steel pipes are formed by reacting molten metal materials with iron substrates, resulting in an aluminum alloy layer that tightly combines the substrate and coating. Hot dip galvanizing is the process of first pickling and passivating square steel pipes. In order to effectively remove the compounds on the surface of the square steel pipes, after pickling and passivation, cleaning is carried out in a tank containing ammonium chloride or magnesium chloride solution or a mixture of ammonium chloride and magnesium chloride solution, and then sent to the hot-dip galvanizing tank. Hot dip galvanizing has advantages such as uniform coating, strong adhesion, and long service life

熱鍍鋅方管基材與熔化的鍍液產生繁雜的物理學、化學變化，產生抵腐蝕的構造密切的鋅一有色金屬層。鋁合金層與純鋅層、方鋼管基材融為一體，所以抵腐蝕工作能力強。

The substrate of hot-dip galvanized square pipes undergoes complex physical and chemical changes with the melted plating solution, resulting in a zinc non-ferrous metal layer with a corrosion-resistant structure. The aluminum alloy layer is integrated with the pure zinc layer and the square steel pipe substrate, so it has strong corrosion resistance.

鍍鋅方管的主要作用知識，而冷鍍鋅方管熱鍍鋅層是電鍍工藝層，鋅層與方鋼管基材單獨分層次。鋅層較薄，鋅層簡易粘附在方鋼管基材上，非常容易掉下來。所以耐蝕性會差，因此在新創建住房中，嚴禁應用冷鍍鋅方管做為排水管道。

The main function of galvanized square pipes is knowledge, while the hot-dip galvanized layer of cold galvanized square pipes is the electroplating process layer, and the zinc layer is separately layered with the base material of square steel pipes. The zinc layer is relatively thin and easily adheres to the substrate of square steel pipes, making it very easy to fall off. So the corrosion resistance will be poor, so it is strictly prohibited to use cold galvanized square pipes as drainage pipes in newly created housing.