Which type of pipe is known for being used in high-pressure situations such as gas supply?

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Cast iron pipes are known for their strength and durability, making them suitable for high-pressure situations such as gas supply. These pipes can withstand significant internal pressure and external stresses without deformation or failure. They have been traditionally used in municipal water systems and gas distribution networks because of their ability to handle not just gas but also high-pressure water applications.

The material's inherent properties, such as resistance to heat and corrosion, contribute to its effectiveness in managing high-pressure conditions. Additionally, cast iron pipes provide a sealed, robust system that minimizes leakage, which is crucial when dealing with flammable gases. This makes them a preferred choice in scenarios where safety and reliability are paramount.

In contrast, the other types of pipes have different characteristics that suit them for other applications but not necessarily for high-pressure gas supply. CPVC, for example, is more suited for hot water applications, while copper and PEX pipes are used in plumbing systems but may not withstand the same level of pressure as cast iron pipes.

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