Steel Pipe & Plastic Pipe Size Reference Guide
Steel_Pipe_Plastic_Pipe_Size_Reference_Guide.pdf
Selecting the correct pipe size is essential when choosing pipe threading machines, roll grooving machines, butt fusion welding machines, pipe cutters and other pipe tools.
Since steel pipes are specified by Nominal Pipe Size (NPS/DN) while plastic pipes are classified by Outside Diameter (OD), the dimensions are not always identical.
This guide provides a quick reference for the most commonly used steel pipe and plastic pipe sizes to help contractors, distributors and engineers select the correct equipment.
- Pipe Threading
- Roll Grooving
- Pipe Cutting
- Pipe Beveling
- HDPE Butt Fusion Welding
- Electrofusion Welding
- Pipeline Installation

- Steel pipe dimensions are based on common ASME/ASTM standards.
- Plastic pipe sizes refer to the most commonly used PE, PPR and PVC outside diameters.
- Dimensions are provided for reference only. Please verify the applicable standards before selecting equipment.
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