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Shenzhen steel type factory galvanized round pipe specifications and weight calculation method

Galvanized pipes, also known as galvanized steel pipes, are divided into hot-dip galvanizing and electro-galvanizing. The hot-dip galvanizing galvanized layer is thick, with uniform plating, strong adhesion and long service life. The cost of electroplating is low, the surface is not very smooth, and its corrosion resistance is much worse than that of hot-dip galvanized pipes. There are many small products and materials used in life, but many people know little about the knowledge. Explain the calculation method and specification of galvanized round pipe of Shenzhen steel type factory.

Galvanized round tube specifications

The tube with 1 inch (inch) = 25.4 mm = 8 inches and 1 minute is equivalent to the domestic DN15 tube, with an outer diameter of 21.3 mm and an inner diameter of 15.7 mm. 2 in charge = DN8 4 in charge = DN15 6 in charge = DN20 1 inch tube = DN25 1 and 1/4 tube = DN32 1 and 1/2 tube = DN40 2 inch tube = DN50 2 and 1/2 tube = DN65 (sometimes marked as DN70) 3 inch tube = DN80 4 inch tube = DN100 5 inch tube = DN125 6 inch tube = DN150 8 inch tube = DN200 10 inch tube = DN250 12 inch tube = DN300. . .

Galvanized round tube weight calculation method

Nominal wall thickness mm 2.0 2.5 2.8 3.2 3.5 3.8 4.0 4.5

Coefficient c 1.064 1.051 1.045 1.040 1.036 1.034 1.032 1.028

Steel grade: Q215A; Q215B; Q235A; Q235B

Test pressure value / Mpa: D10.2-168.3mm is 3Mpa; D177.8-323.9mm is 5Mpa.

Management weight formula: (diameter - wall thickness) x wall thickness x0.02466 * 1.0599 = weight per meter (kg / m)

The above-mentioned all are about the specification and weight calculation method of galvanized round pipe of Shenzhen steel type factory. Due to the special nature of steel pipe itself, in order to prevent corrosion, some have to carry out effective aluminizing treatment. The molten metal is reacted with an iron matrix to produce an alloy layer, thereby combining the matrix and the plating. Hot-dip galvanizing is to pickle the steel pipe first, in order to remove the iron oxide on the surface of the steel pipe, after pickling, it is washed by ammonium chloride or zinc chloride aqueous solution or a mixed aqueous solution of ammonium chloride and zinc chloride, and then fed. Hot dip plating tank. Hot-dip galvanizing has the advantages of uniform plating, strong adhesion and long service life. Most of the northern processes use galvanized strips to directly fill the tubes to supplement the zinc. The above is the explanation of the galvanized round tubes.