Stud bolts are also called double-head screws or studs. Generally used in mining machinery, bridges, automobiles, motorcycles, boiler steel structures, crane towers, large-span steel structures and large buildings, etc. This knowledge is generally known, but the surface treatment process of stud bolts is rarely known. Next, I will introduce the surface treatment process of stud bolts.

The surface treatment of the stud bolts plays a role in preventing rust, and the other is beautiful. If the studs are not treated, they are not beautiful, and the other is easy to rust. There is no customer demand. Of course, this is for some bolts, for stainless steel It is also not handled by appearance.

Stud bolts generally need to undergo surface treatment. There are many types of bolt surface treatments. Generally, electroplating, blackening, oxidation, phosphating, and non-electrolytic zinc flake coating are commonly used. However, electroplated fasteners occupies a large proportion in the actual use of fasteners. Especially in industries and fields such as automobiles, tractors, home appliances, instrumentation, aerospace, and communications. However, for threaded fasteners, not only a certain anti-corrosion ability is required in use, but also the interchangeability of threads must be guaranteed, which can also be referred to as screwability here. In order to meet the dual use performance of "anti-corrosion" and "interchangeability" required by threaded fasteners at the same time, it is very necessary to formulate special plating standards.