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.
Stainless Steel Pipe is ideal for applications when greater strength and superior corrosion resistance is required over that of carbon steel . Stainless Pipe is widely used for all types of fabrication projects that are exposed to the elements - chemical, acidic, fresh water, and salt water environments. Pipe is welded with flash removed from outside diameter with little or no evidence of seam. Inside is flash in.

Material: Stainless Steel
Shape: Pipe
Alloy: 304
Temper: Annealed
Nominal Pipe Size: 1-1/2 inch Schedule 40
Outside Diameter: 1.900 inch
Inside Diameter: 1.610 inch
Wall: 0.145 inch
Finish: Mill (Unpolished)
Specifications: ASTM A312
Tolerances: Industry Standards on OD and Wall| Length: Listed length up to plus 1 inch.