In terms of hardness:
the hardness of the flat welding flange is higher than the butt welding flange, if there is geothermal at home, then the use of butt welding flange will be better, if the home is ordinary heating, then the use of flat welding flange will be better, because there will be a certain difference in the use of two pipe fittings, for different environments.
In terms of linkage :
The link service rate of plain welding flanges is lower than that of butt welding flanges. Therefore, the use of flat welding flange will be more long-term, because the link rate is low, so the material will always remain dry, in use, will extend the service life. Welding flange has a certain toughness, in the use, the link rate is not as good as the flat welding flange, so in the choice, will see the flat welding flange suitable field and pipe fitting suitable field is different, their conditions of use and the use of the environment have certain differences.
From the service life :
Flat welding flange is divided into ordinary flat welding flange is also divided into multi-layer flat welding flange, and the role of the link is very small, so the service life is longer than other types of pipe fittings, the choice is made of fine solid carbon steel, the material is also relatively hard, steel material can have the effect of dry. Welding flange in use, is also very good, more suitable for the use of geothermal, so the two groups of pipe fittings have different advantages in comparison. From the point of view of service life, the service life of the flat welding flange is higher than that of the butt welding flange. The basic materials they choose will have certain differences. Therefore, the service life of the flat welding flange is longer.