Any flange will work in this scenario. When designing the component, it is important to determine whether the integral flange or the loose flange should be used based on the degree of integrity of the flange ring and the straight cylinder section. In comparison to the neck butt welding flange, the flat welding flange has a more straightforward construction and a simpler design. On the other hand, the rigidity and sealing performance of the flat welding flange are not even close to being as good ...