When it comes to plumbing systems, the type of pipe used can make all the difference in performance and longevity. Whether you're dealing with a leaking pipe, remodelling your bathroom, or planning new plumbing installations, understanding the different types of plumbing pipes is crucial. Not all pipes are created equal, and each has its unique benefits, costs, and applications.
What are the 5 Most Common Types of Plumbing Pipes?
The 5 most common types of plumbing pipes are Copper, PVC, PEX, Galvanised Steel, and ABS pipes. Each type serves different purposes and offers distinct benefits based on factors like durability, cost, and suitability for hot or cold water systems.
1. Copper Pipes: The Classic Choice

Benefits
- Durability: Copper pipes are resistant to corrosion, making them ideal for long-term use. They can last over 50 years, making them a cost-effective choice in the long run.
- Safety: Unlike some plastic pipes, copper doesn't release harmful chemicals into the water, ensuring a safe drinking supply.
- Temperature Resilience: Copper can withstand extreme temperatures, making it a preferred choice for hot water systems.
Pros
- Long-lasting and reliable.
- Ideal for hot water systems and high-pressure water flow.
- Environmentally friendly and recyclable.
Cons
- Expensive compared to other pipe materials.
- Requires professional installation due to soldering and fittings.
When to Use Copper Pipes: If you're installing a hot water system or need pipes that can handle high-pressure water flow, copper is a solid choice. However, they are more expensive than other options, so it’s best for homeowners prioritising longevity over cost.
2. PVC Pipes: Lightweight and Affordable

Polyvinyl Chloride (PVC) pipes are commonly used in residential plumbing, especially for drain, waste, and vent systems. They are a go-to for many Sydney plumbers due to their affordability and ease of installation.
Benefits
- Cost-Effective: PVC is significantly cheaper than metal pipes, making it a budget-friendly option for plumbing projects.
- Corrosion-Resistant: Unlike metal pipes, PVC does not corrode or rust, making it a reliable choice for areas with high moisture levels.
- Versatile: These pipes are versatile and can be used for both hot and cold water applications, although they are primarily used for drainage.
Pros
- Lightweight and easy to install.
- Resistant to chemicals and corrosion.
- Inexpensive and widely available.
Cons
- Unsuitable for high-temperature water.
- Can become brittle over time when exposed to direct sunlight.
When to Use PVC Pipes: PVC is perfect for drainage lines, waste disposal, and low-pressure water systems. However, avoid using them for high temperature water as they can warp under heat.
3. PEX Pipes: The Modern Solution

Cross-linked Polyethylene (PEX) pipes are a relatively new option in plumbing and have gained popularity for their flexibility and ease of use. If you're dealing with a leaky pipe or need a quick repair, PEX pipes are often a great choice.
Benefits
- Flexible: PEX pipes are incredibly flexible, making them easy to install in tight spaces. This flexibility also reduces the need for multiple fittings, lowering installation costs.
- Durable: PEX is highly resistant to corrosion, scaling, and chlorine, ensuring a long lifespan.
- Freezing Resistance: These pipes can expand if water freezes, reducing the likelihood of bursting during Sydney’s cold winter nights.
Pros
- Quick and easy installation.
- Low maintenance and highly durable.
- Can be used for both hot and cold water supply.
Cons
- Not recyclable like metal pipes.
- Limited UV resistance; not ideal for outdoor use.
When to Use PEX Pipes: PEX is ideal for emergency plumbing repairs or renovations, as they can be quickly installed without extensive cutting or soldering.
4. Galvanised Steel Pipes: The Old-School Heavyweight

Galvanised steel pipes were once the go-to option for residential plumbing but have largely been replaced by more modern materials. However, they can still be found in older homes across Sydney.
Benefits
- Sturdy: These pipes are highly durable and can withstand high water pressure, making them suitable for commercial plumbing.
- Rust-Prone: Over time, galvanised pipes can rust from the inside, which may affect water quality.
- Heavy and Rigid: Installation can be labour-intensive due to the weight and rigidity of these pipes.
Pros
- Highly durable and resistant to physical damage.
- Suitable for commercial-grade water pressure.
Cons
- Prone to rusting over time, which may affect water quality.
- Heavy and difficult to work with, leading to higher installation costs.
When to Use Galvanised Steel Pipes: Generally, they are best left to older systems where replacements aren’t practical. If you're experiencing rusty water, it may be time to replace these pipes with newer materials.
5. ABS Pipes: The Black Pipe Option

Acrylonitrile Butadiene Styrene (ABS) pipes are another plastic option that is similar to PVC but is distinguishable by its black colour. These are often used for underground drainage systems.
Benefits
- Tough and Lightweight: ABS pipes are stronger than PVC, making them suitable for underground installations where durability is crucial.
- Low-Cost: Like PVC, ABS is cost-effective and easy to install.
- Cold-Resistant: ABS handles colder temperatures better than PVC, making it a suitable choice for Sydney’s winter months.
Pros
- Budget-friendly and durable.
- Resistant to impact damage.
- Great for underground installations.
Cons
- Limited UV resistance; not ideal for outdoor use.
- May deform under high temperatures.
When to Use ABS Pipes: If you’re installing drainage or vent systems, especially underground, ABS is a reliable option.
Conclusion
Understanding the specific advantages and drawbacks of different plumbing pipes is essential for making the best choice for your plumbing requirements. Whether your focus is on affordability, longevity, or installation convenience, selecting the appropriate type of pipe is key to ensuring efficiency and durability in the long run.
For expert guidance and installation, consider reaching out to a qualified plumber to achieve optimal results tailored to your plumbing needs.
FAQs on Plumbing Pipe
Q1: How do I choose the right type of plumbing pipe for my home in Sydney?
The best pipe depends on your specific needs. For hot water systems, go for copper or PEX. For drainage or vent systems, PVC or ABS are great choices. Consulting a professional plumber in Sydney will help you make the best decision based on your project and budget.
Q2: Can I replace my old galvanised steel pipes with PVC or PEX?
Yes, replacing old galvanised pipes with modern materials like PVC or PEX can improve water quality and prevent future leaks. It’s advisable to consult an emergency plumber in Sydney for such replacements, especially if you suspect corrosion.
Q3: Are copper pipes worth the investment?
If you plan to stay in your home for a long time, copper pipes are a wise investment due to their durability and safety. They might have a higher upfront cost, but their long lifespan makes them cost-effective in the long run.