drywall screws exterior use

drywall screws exterior use

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drywall screws exterior use drywall screws exterior use

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  • Third, 201 is high manganese content, the surface is very bright with dark bright, high manganese content is easy to rust. 304 contains more chromium, the surface is matte, no rust. Put the two together and you have a comparison. The most important thing is that the corrosion resistance is different. The corrosion resistance of 201 is very poor, so the price will be much cheaper. Because of the low nickel content of 201, the price is lower than 304, so the corrosion resistance is not as good as 304.

    drywall screws exterior use

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    drywall screws exterior use drywall screws exterior use

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  • Of course, the quality of any kind of product is also affected by the implementation of the specification of the manufacturer, if it is the welding screen manufacturers in the production of their own is not very high implementation of the specification, or in the production line of the procedure specification has declined, or there is no higher requirements on the production link.

    drywall screws exterior use

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    drywall screws exterior use drywall screws exterior use

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  • drywall screws exterior use

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    drywall screws exterior use drywall screws exterior use

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  • According to the different requirements of the industry, different weights of alloy ingots are put in the smelting furnace according to the standard, such as weaving, Ming, paper, lang, silicon, etc., and the data out of this smelting is called gold ore iron. Iron has gray iron, white iron and the above-mentioned gold, they have different characteristics, so in the industry according to their different characteristics to transport and selection. For example, in gray iron, its carbon exists in iron ore in graphite condition, the crack is often gray, soft and strong, simple filtering, suitable for casting.

    drywall screws exterior use

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    drywall screws exterior use drywall screws exterior use

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  • drywall screws exterior use

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    drywall screws exterior use drywall screws exterior use

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