Line Pipe

Galvanized carbon steel pipe is steel covered with a layer of zinc metal. During the galvanizing process, the steel is immersed in a bath of molten zinc to ensure a firm, uniform isolation coating. Galvanized carbon steel pipe is covered with zinc material to make it more corrosion resistant.
Galvanized carbon steel pipe divides cold galvanized carbon steel pipe, hot galvanized carbon steel pipe, the former has been forbidden, the latter still is advocated by the country to use.

Hot dip galvanized carbon steel pipe is to make molten metal and iron matrix reaction to produce an alloy layer, so that the matrix and coating are combined. Hot dip galvanized carbon steel pipe is first pickling, in order to remove iron oxide on the surface of the steel pipe, after pickling, through ammonium chloride or zinc chloride aqueous solution or ammonium chloride and zinc chloride mixed aqueous solution tank for cleaning, and then into the hot dip plating tank. Hot dip galvanizing carbon steel pipe has the advantages of uniform coating, strong adhesion and long service life. Complex physical and chemical reactions occur between the steel pipe matrix and the molten bath, forming the corrosion resistant zinc-iron alloy layer with close structure. The alloy layer is integrated with the pure zinc layer and the steel tube matrix. Therefore, its corrosion resistance is strong.

1.The uniformity of the galvanized layer: steel pipe sample in the copper sulfate solution for 5 times shall not turn red (copper plating color).
2.Surface quality: the surface of galvanized steel pipe should be complete galvanized layer, there should be no black spots and bubbles on the plating, allowing a small rough surface and local zinc tumor.
3.Galvanized layer weight: according to the requirements of the buyer, galvanized steel pipe can be used for zinc layer weight determination, the average value should not be less than 500g/ square meter, any sample should not be less than 480g/ square meter.

Hot dip galvanized carbon steel pipe has very strong anti-corrosion performance, so in some occasions that need strong anti-corrosion performance, often need to use hot dip galvanized carbon steel pipe.
Now in social life, the need to use there will be a lot of galvanized steel pipe, ordinary galvanized carbon steel pipe as a conduit, after long time use will make the tube produce large scale, the scale accumulation in the pipeline, time is long will follow the water flow out from water pipes, red yellow scale can cause the pollution of sanitary ware, and prone to bacteria in scale, threatening people's health. After the use of hot dip galvanized carbon steel pipe, can effectively avoid the occurrence of this phenomenon, is conducive to improve water quality.

In addition, in plastic greenhouses, coal mines and other places with high humidity, as well as in places with strong corrosion, hot dip galvanized carbon steel pipe with its extremely superior corrosion resistance, in these places has played an important role.

DN15, DN20, DN25, DN32, DN40, DN50, DN65, DN80, DN100, DN125, DN150, DN200, the above are commonly used galvanized steel pipe specifications.