Category: News

Technical requirements for butt welding flanges

In the actual production and development of butt welding flanges, different methods and processes are used for production and production. According to the process methods and principles, it has important value and effect on different aspects, and certain elements are added in actual production. Increase the characteristics and value of carbon steel flanges, and express […]

There are two main processes for chemically treating the flange surface

There are two main processes for chemically treating the flange surface There are two main processes for chemically treating the surface of flanges: one is high-temperature oxidation, which is often referred to as flanges; the other is blackening at room temperature. With the advent of the era of industrialization, the petrochemical industry, power industry, metal […]

The principle of use of carbon steel flange

Carbon steel flanges are different from flanges that are not produced according to standard sizes, also known as second-standard flanges. Usually, some unscrupulous merchants will reduce the thickness of the flange and the outer diameter to achieve the purpose of saving materials. Steel or leftover steel is used to process flanges. Usually, this kind of […]

Matters needing attention in the installation process of stainless steel flange

Matters needing attention in the installation process of stainless steel flange  1. In order to prevent intergranular corrosion caused by heating the stainless steel flange cover, the welding current should not be too large. At this time, the current needs to be about 20% smaller than that of the carbon steel electrode, the arc should […]