The difference between the black flat phillips machine screw and the environmentally friendly black zinc salt spray
There are many kinds of surface treatments for screws. Most of them are different surface treatment methods according to the needs of users. Electroplating is the most common one. Electroplating is divided into many types, depending on the color required by the surface of the flat phillips machine screw , or according to user requirements. The choice of plating method varies depending on the performance. What is the difference between blackening flat phillips machine screw and environmentally friendly black zinc salt spray? A few days ago, when the customer customized the flat phillips machine screw , the surface of the cross countersunk head screw was required to be black. It is known that there are two kinds of blackening treatment of the screw, one is blackening the screw and the other is black zinc plating. I don’t quite understand the difference between the two. Shi Shi Tong screw manufacturers here briefly say: The blackening process is also called blackening. T...