The answer to 'types of supply line' is that there are several common types of supply lines used in plumbing systems for homes and buildings. The most common types are rigid copper tubing, flexible stainless steel braided hoses, and plastic PEX (cross-linked polyethylene) tubing. Each type has its own advantages and considerations for installation and use.
Rigid copper tubing is a durable, long-lasting option that is often used for main water supply lines. Flexible stainless steel braided hoses are commonly used for connecting appliances like sinks, toilets, and washing machines. PEX tubing is a newer, more flexible plastic option that is easy to install and resistant to corrosion and freezing.