1. Flange connection: If it is directly buried in the ground, the risk of bolt corrosion is relatively high, and problems such as water leakage at the interface may occur in the future. Some design codes also require bolts not to be buried directly in the ground. In addition, because the flange connection uses bolts to ensure the sealing effect, manual operation has a greater impact.
2. Socket connection: The advantage of socket connection is that there is no risk of corrosion of bolts buried in the ground. But for large-diameter pipelines, the wall thickness of the steel pipe is thinner, and the steel pipe protrudes from the well chamber. The settlement of the well chamber may cause excessive radial deformation of the steel pipe, which may cause the risk of water leakage at the interface.
Ductile iron pipe fittings can be used in many places. Its function is not only water supply, but also natural gas supply. If natural gas is transported, its function is also very good. Through its functions, I can safely use natural gas and water resources. Ductile iron pipes are used for water supply, which to a certain extent guarantees the daily water consumption of citizens.
Qualified ductile iron pipe lining standard honest cement is required; the outer wall of the pipe is required to be sprayed with zinc, bituminous paint, and other epoxy paints are also available. Qualified ductile iron pipes can be used for more than one hundred years. The main rust area is where the outer wall is in contact with the soil. K9 Double Flange Straight Cast Iron Pipe-Wholesale of cast iron pipe fittings for water supply, due to its high humidity and high oxygen content.
