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Cast Iron LA Pipe vs. PVC Pipes – Which is Better for Plumbing?

Over the last century, both household and commercial plumbing arrangements across the world have been dominated by two materials – PVC pipes (Polyvinyl chloride) and Cast-Iron pipes.

Over the last century, both household and commercial plumbing arrangements across the world have been dominated by two materials – PVC pipes (Polyvinyl chloride) and Cast-Iron pipes. Both of these materials are very common. For instance, people who like their plumbing systems to have smooth, light, and rust-free pipes prefer PVC.

Smoothness is an extremely important quality for plumbing pipes. The smoothness that PVC offers minimize any friction. Hence the speed of water dispersal is fast, and the process is interruption-free.

However, recent advancements have made the average Cast Iron LA Pipe (CI pipes) just as smooth and rust-resistant as a standard PVC pipe. In addition to that, these pipes also offer other advantages over PVC pipes. 

Understanding CI Pipes 

CI pipes have been used in residential construction for over a hundred years. Originally, they were only used to transport sewage water. The material is much stronger than other common pipe-building materials. Hence, the intensive grinding and water pressure that’s common in all sewage systems don’t affect the quality of the pipe. For instance, often, storm drains, or sewage lines are full of solid waste. These small but abrasive waste items can damage PVC but not CI pipes. These qualities make these iron-made pipes ideal for high rise projects.

Key Features and Strengths

  • Indestructible – These fittings are similar to Electrosteel Iron Pipe in terms of durability. These pipes deal with decades of abrasive damage from waste materials without experiencing any considerable damage. They don’t react with chemicals and are temperature-resistant. 
  • Maintenance – There’s minimal need to maintain these strong fittings. They’re wonderfully constructed to deal with physical pressures. The material is also intrinsically temperature resistant, and these pipes won’t melt, burn, or expand even in extreme temperatures. These intrinsic qualities give these pipes long lifespans.
  • Noise Proof – When water or sewage passes through these pipes, there’s minimal noise/vibration. The impact of vibrations on these pipes depends on the way they’ve been joined. These pipes are easy to install and can be customized to suit any sewage or plumbing system.

Better than PVC?  

Both PVC pipes and CI pipes are cheap, easy to use, and install. But, in what areas do these pipes outperform PVC pipes?

  • Environment-Friendly - CI pipes are the eco-friendlier choice because, unlike PVC pipes, they are easily recyclable. There are many recycling plants across the world that recycle these used pipes. Overall, this material is much safer for the environment compared to the synthetically produced PVC.
  • Vibrations - When water/sewage moves through these pipes, there’s little or no vibrations. Iron is one of the densest materials. Hence, all noise or vibration gets drowned out. This quality makes PVC pipes the less preferable choice for creating residential plumbing systems.
  • Cost – When homeowners buy PVC pipes, they’ll have to spend extra to insulate them, or else the sound of flowing water will drive them insane. There’s no need for such investments with CI pipes. 

Overall, CI pipes are more durable and cost-efficient than PVC pipes. While both materials are equally reliable, cast-iron pipes are clearly the standout choice!


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