Quality identification and installation method of ductile iron pipe

Ductile iron pipes have the characteristics of high strength, high pressure resistance, low accident rate, and long service time. But when we buy ductile iron pipes, how to distinguish the authenticity of ductile iron pipes? Next, I will briefly introduce how to distinguish ductile iron pipes. The quality of cast iron pipe is good or bad, let’s take a look!


The surface of the ductile iron pipe has a pitting phenomenon. The pitting is the cause of the unevenness of the surface of the ductile iron pipe due to serious wear. The surface of the inferior ductile iron pipe is prone to scarring. For some inferior ductile iron pipes Cracks may occur during use. This is mainly due to the cracks on the surface of the ductile iron pipe caused by the production process during the production process. The surface of the ductile iron pipe of poor quality is more likely to be scratched, and the surface of the metal luster is not Okay, wait, we can judge the quality of ductile iron pipes through the above. When buying ductile iron pipes, we can choose ductile iron pipes produced by regular manufacturers so as to ensure the quality of ductile iron pipes.

The installation of ductile iron pipe is more complicated. Before ditching, first remove obstacles and level the ground. Then place the ductile iron pipe according to the design requirements, and take appropriate safety protection measures to prevent the pipe sections from rolling off. After laying the sand cushion on the pipe foundation, excavate the joint work pit according to the actual length of the ductile iron pipe that has been discharged along the trench to ensure that the pipe body is stable on the sand cushion as a whole.

According to the design, use the observer and level to find the installation surface. The bottom of the ditch should be neat and tidy, and avoid placing the pipe on the convex surface of the bottom stone. Under normal circumstances, the direction of water flow should flow from the socket to the socket; but in the case of a large slope, the socket should be upward, and the installation should proceed from bottom to top. Try to avoid installing the socket to the socket. When laying down the ditch, avoid strong collision with the bottom and wall.

Post time: Sep-18-2020