This calculator is designed to aid piping engineers, piping students, pipe welders, pipe assemblers, and so on!
It's a regular scientific calculator with build-in piping equations and formulas, as shown below:

✔ Uses International System of Units (SI) or United States Units (US)
✔ Can use degrees or radians
✔ Have a memory mode which can store as much data as you want
✔ Come with a pipe and fittings database according to ASME standard code (ASME B36.10 for pipes and ASME B16.9 for fittings), where you can get dimensions and weights
✔ Have a material database according to ASTM standard code
✔ Calculate the volume of welding material needed to weld pipes
✔ Calculate flow rate, velocity and pipe diameter
✔ Can find the closest standard pipe just by giving the inner diameter and thickness
✔ Calculate Complex Roll Offset, Simple Roll Offset, Mitered Cut Back, Parallel Cut Back, Cut Length, Odd Angle, Water Column, Area, Volume
✔ You can change the calculator color (black or white)
✔ Have a build-in converter, which can convert pressure, temperature, length, weights, power and volume

Oh, and it come with a manual in pdf format, so you wont get lost! :)

Much more will be added in the followings updates!