Flanging includes: hemispherical flanging, elliptical flanging, and spherical flanging. From the perspective of force, the hemispherical plug in convex plugs is gradually not good, but from the perspective of manufacturing difficulty, it is gradually becoming better. The materials of the manufactured products include carbon steel, stainless steel, alloy steel, and other metal materials with special user requirements. There are more than 1000 specifications and models of pipe fittings. Our company can produce various materials such as American standard, national standard, ASTM A105, A234 WP B, Q235, 20 #, Q345, 15CrMo, 12Cr1MoV, 304, 304L, 316, 316L, X70, P91, P22, etc. We can also customize various materials according to customer requirements.