3/4 Sch 40 pipe dimensions is the pipe wall thickness standard defined by ASTM, and 3/4 inch is one of the sizes.
3/4 Sch 40 Pipe
The nominal outer diameter of 3/4-inch Sch40 pipe is 26.67mm (1.05 inches), the wall thickness is approximately 2.87mm (0.113 inches), the weight is 1.69kg/m (1.13lb/ft), and its Maximum Allowable Pressure is 5273psi (36357kPa).
References
ASME B36.10M: Welded and Seamless Wrought Steel Pipe
Engineering ToolBox – Steel Pipes – Schedule 40
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