Chinese manufacturer produces black phosphating dry wall nails, high-strength self tapping screws, cross countersunk head light steel keel wall panel nails for fasteners

fine thread 
Phosphated drywall screws are the most basic product line, while blue and white zinc drywall screws are a supplement, and their scope of application and purchase price are basically the same. The slight difference is that black phosphating has a certain degree of lubricity and slightly better attack speed (the speed at which a specified thickness of steel plate is penetrated, which is a quality assessment indicator); Blue and white zinc have a slightly better rust prevention effect, and the product's natural color is light, making it less prone to discoloration after coating decoration.
Blue white zinc and yellow zinc have almost no difference in rust prevention ability, only due to differences in usage habits or user preferences.
Single line coarse teeth
The thread of the single line coarse tooth drywall screw is wider, and the corresponding attack speed is faster. At the same time, because it will not damage the structure of the wood material itself after entering the wood, it is more suitable for the installation of wooden keel than the double line fine tooth drywall screw.
In foreign countries, construction generally places great emphasis on selecting suitable fastener products. Single line coarse tooth drywall screws are a more suitable alternative to double line fine tooth drywall screws for connecting wooden keels. In the domestic market, double threaded fine tooth drywall screws have been used exclusively for a long time, and changing usage habits requires some time.
Self drilling nail
Used for the connection between gypsum board and metal keel with a thickness not exceeding 2.3mm, available in black phosphating and yellow zinc coating options. The scope of application and purchase price of the two are basically the same. Yellow zinc has a slightly better rust prevention effect, and the product's natural color is light, making it less prone to discoloration after coating decoration