What are the pex pipe sizes in North America

　　PEX pipes are available in various sizes, which are typically denoted by their nominal diameter (in inches or millimeters) and wall thickness. Commonly used PEX pipe sizes in North America are as follows:

　　Standard PEX Pipe Sizes (Nominal Diameter):

　　1/4 inch (6 mm): Rarely used, mostly for small applications or specific systems like irrigation.

　　3/8 inch (10 mm): Used for small fixture runs or low flow applications.

　　1/2 inch (13 mm): Common for residential plumbing, typically used for smaller fixtures like faucets and toilets.

　　3/4 inch (19 mm): One of the most common sizes for general household plumbing, used for larger fixtures and branch lines.

　　1 inch (25 mm): Often used for larger applications, such as running water to multiple fixtures or for supply lines.

　　1-1/4 inch (32 mm): Less common, used for larger capacity systems or for main supply lines.

　　1-1/2 inch (38 mm): Used for very large supply systems or main trunk lines in larger homes or commercial buildings.

　　2 inch (50 mm): Used in heavy-duty commercial or industrial applications.

　　Common Lengths

　　PEX pipes are typically available in coils (often 100 feet or 300 feet) or in straight lengths (usually 10 feet or 20 feet).

　　If you're choosing PEX pipe for a project, it's essential to match the size and type of pipe with the required water flow and pressure ratings for your system.