4 NPS SCH 40, (4.500" OD, 0.237" W), A500 Steel Steel Pipe, Welded

NPS stands for Nominal Pipe Size. It's a dimensionless number used in North America to indicate the size of pipes, valves, and other related components in a piping system. It's not a direct measurement of the pipe's actual dimensions, but rather a convenient way to refer to a specific pipe size.
Please refer to OD, ID and Wall for actual size of pipe.
A500 Pipe is an economical structural grade pipe with a smooth bare finish with slightly higher mechanical properties than A53 standard pipe.

• Material: Carbon Steel
• Shape: Pipe
• Alloy: A500
• Temper: N/A
• Nominal Pipe Size: 4 inch Schedule 40
• Outside Diameter: 4.500 inch
• Inside Diameter: 4.026 inch
• Wall: 0.237 inch
• Finish: Mill (Unpolished)
• Specifications: ASTM A500
• Tolerances: Industry Standards on OD and Wall| Length: Listed length up to plus 1 inch.