Last time we discussed some materials in municipal pipes, such as natural gas pipes and water & sewer pipes. Today we continue to introduce another 3 types of pipe materials in municipal use.

Steel Pipe

Steel’s primary benefit is brute strength. Cracking typically doesn’t occur, and under abnormal loads, the material bends rather than breaking.

Like other metal pipes, steel is prone to corrosion, so it has to be lined with an asphalt coating when used in water mains to protect against acidic water. However these various coatings and linings are easy to be damaged.

Concrete Pipe

Concrete, which is one of the world’s most common building materials, is used in both gravity flow and pressure pipe. Precast gravity-flow pipe is manufactured in several shapes, including round, elliptical, arched and box, and is used in sanitary sewers, storm drains and culverts. Concrete pressure pipe, which is a separate classification, is primarily used for potable water. Concrete pipe boasts its durability, strength and longevity.

Despite these merits, the pipe is quite weak in extremely acidic soil, like H2S. some concrete pipes are coated with a plastic liner to prevent the corrosion.

PVC Pipe

Polyvinyl chloride, which scientists first stumbled upon in the 19th century, is one of the oldest synthetic materials. In corrosion resistance and fusibility for trenchless pipe construction, it is almost horse and horse with HDPE. The failure rate of PVC pipes is also the lowest among cast iron, ductile iron, concrete, steel and asbestos cement pipes.

Situations with operating pressures lower than 305psi and temps under 140℃ are all the stage of PVC pipes. This is absolutely enough for water and sewer systems.

 

Generally speaking, plastic pipes seem to be preferred as ideal replacement of traditional pipes. However, every project needs a full consideration, including concepts, politics and budget. The municipal pipe replacing is unexceptional.

steel pipe
Steel Pipe
Concrete Pipe
Concrete Pipe
PVC Pipe
PVC Pipe

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