Brief introduction of centrifugal ductile cast iron pipe

At present, centrifugal ductile cast iron pipe has become the preferred material for water supply pipe in the industry, and it is gradually popularizing that it should be used in gas pipeline system. The reason is that ductile cast iron pipe has the strength and required elongation of steel pipe, but its corrosion resistance is more than twice that of steel pipe.

 

As a new type of pipe, ductile cast iron pipe has the following good properties: excellent mechanical properties, metal saving, simple construction, economical comprehensive engineering cost, high reliability, corrosion resistance, safe water supply and gas transportation. used in the field of water supply pipeline, water supply pipe network, oil pipeline network and gas pipeline network, long ductile cast iron is a kind of alloy of iron, carbon and silicon, in which carbon exists in spherical free graphite.

 

In gray cast iron, flake graphite has a splitting effect on iron matrix. To make it brittle. In ductile cast iron, nodular graphite eliminates this destructive effect and makes it tough. It has the essence of iron and the properties of steel.

 

Ductile cast iron pipe is the carrier of pipeline water supply because of its excellent mechanical properties and external quality. its super pressure-bearing capacity, reliable sealing performance, incomparable anticorrosive treatment and water quality guarantee system make pipeline water supply nearly perfect. even in the complex saline-alkali land, swamps, high slopes and deserts and other balanced soil, can also excellently complete the task of water supply.

 

The tensile strength and pressure resistance of centrifugal ductile cast iron pipe are similar to those of steel pipe, compared with gray cast iron pipe, the elongation of gray cast iron pipe is greatly improved, and it has good toughness, which not only overcomes the disadvantage of easy fracture of gray iron pipe, but also avoids the bad phenomenon that steel pipe is easy to change under high pressure. In this way, the centrifugal ductile cast iron pipe has a remarkable effect on anti-seismic capacity, and its service life is also significantly prolonged, as long as 50-70 years.

 

Centrifugal ductile cast iron pipes have replaced ordinary cast iron pipes, most of which are seen in municipal engineering and installation projects, water supply, gas transmission and other pipelines.

 

Centrifugal ductile cast iron pipe is a kind of pipe produced by centrifugal casting process, and its material is ductile cast iron. It is widely used in various pipeline projects of metallurgy, mining, water conservancy, petroleum and urban public construction, and can transport water, gas and other fluid media. It has the essence of iron, the performance of steel, high strength, good toughness and corrosion resistance, so it is the replacement product of traditional cast iron pipe and ordinary steel pipe. In addition, the centrifugal ductile cast iron pipe has good linearity, smooth surface, accurate size, uniform wall thickness and mechanical properties.Good, the coating adheres firmly, adopts T-type plug-in flexible interface, apron seal, convenient installation.