Stainless steel is the abbreviation of stainless steel and screw resistant. It is called stainless steel that is resistant to weak corrosive media such as air, steam, and water, or is stainless steel; Corrosion steel is called acid-resistant steel. Due to the difference in chemical composition between the two, their corrosion resistance is different. Ordinary stainless steel is generally not resistant to chemical media corrosion, while acid-resistant steel is generally non-corrosive.
Most of the requirements for use are to maintain the original appearance of the building for a long time. When determining the type of stainless steel screws to be selected, the main considerations are the required aesthetic standards, the corrosiveness of the local atmosphere, and the cleaning system to be adopted. However, other applications are increasingly seeking structural integrity or impermeability. For example, roofs and side walls of industrial buildings. In these applications, the owner’s construction cost may be more important than aesthetics, and the surface may not be very clean. The effect of using 304 stainless steel in a dry indoor environment is quite good.
However, if you want to maintain its appearance outdoors in the countryside and cities, you need to wash it frequently. In heavily polluted industrial areas and coastal areas, the surface will be very dirty and even rusty. However, to obtain the aesthetic effect in the outdoor environment, nickel-containing stainless steel screws are required. Therefore, 304 stainless steel screws are widely used in curtain walls, side walls, roofs and other construction purposes. However, 316 stainless steel screws are best used in severely corrosive industries or marine atmospheres. Several design criteria include 304 and 316 stainless steel screws.
Because "duplex" stainless steel 2205 has integrated good atmospheric corrosion resistance with high tensile strength and elastic limit strength, this steel is also included in the European standards. Product shape, in fact, stainless steel is manufactured in full-standard metal shapes and sizes, and there are many special shapes. The most commonly used products are made of thin plates and strip steel, and medium and heavy plates are also used to produce special products, such as the production of hot-rolled structural steel and extruded structural steel. There are also round, oval, square, rectangular and hexagonal welded pipes or seamless steel pipes and other forms of products, including profiles, bars, wires and castings. In order to meet the aesthetic requirements of architects, many different commercial surface finishes have been developed.
