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08 2023-05

What are the causes of white rust?

Galvanized sheet in the transport of water.

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08 2023-05

Why should we carry out anti-rust treatment on hot-dip galvanized products?

When the hot galvanized sheet is in the humid air, especially when the air contains SiO2, CO2, NO2 and NO and other acidic substances, the surface of the galvan···

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08 2023-05

test the corrosion resistance of hot galvanized sheet which several methods?

There are three ways to test the corrosion resistance of hot-galvanized sheet: salt spray test; Wet test; Erosion test.

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08 2023-05

What is the principle of passivation of hot galvanized sheet?

Chromate passivation treatment of galvanized sheet can form passivation film, its chemical reaction formula is as follows: Zn+H2GrO4-ZnGrO2=H2The trivalent chro···

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08 2023-05

What is big zinc flower? What is a small zinc flower?

large zinc flower is normal zinc flower, according to the normal production process can produce large zinc flower, its crystal core diameter is not less than 0.···

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08 2023-05

What are the causes of white rust and black spots?

Dark spots are formed by further oxidation of white rust. The main causes of white rust are:Poor passivation, passivation film thickness is not enough or uneven···

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08 2023-05

What are the main causes of zinc layer shedding?

The main reasons for zinc layer shedding are: Surface oxidation, silicon compounds, cold bound emulsion is too dirty, NOF section oxidation atmosphere and prote···

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08 2023-05

the coil weight is 5 tons. What is the length of the coil?

What is the length of the coil?

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08 2023-05

What are the main defects of hot dip galvanizing?

Mainly: peeling, scratches, passivation spots, zinc particles, thick edge, air knife stripes, air knife scratches, exposed steel, inclusion, mechanical damage, ···

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08 2023-05

usually cooling tower cooling ways are several?

There are two kinds: air-cooled and water-cooled.

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Zhishang Steel Co., Ltd

Zhishang steel co.Ltd,specializes in steel products,which mainly manufactures galvanized steel,galvalume steel,ppgl,ppgl and also can supply hot rolled steel, coldrolled steel,stainless,wire rod,h beam,steel pipe,etc.The company is committed to providing customers with high-quality and low-price steel products and strives tocreate value for custome···

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