both ID inside diameter and OD outside
wall thickness is determined by sch 40 ect the higher the number the thicker the wall
pressure pipe should be a higher rating c900 PVC can go to 200 psi
ductile and steel up to 600 psi
non pressure pipe is a sch 35 usually
Diameter.
to measure inside diameters of pipes
With a paintbrush.
The best way to clean out the inside of your custom motorcycle straight pipes is to remove the pipes and use a cleaning solvent and a rag with a long handled brush.
chlorine
To measure ID of pipes and cylinders.
Tube and pipe are both used for conveying liquids or gases under pressure. They differ in how they are sized and their rigidity. A conduit is mainly used to protect and route electrical wiring.
liters
You can't.
to increase surface area
The correct dimensions are measured from inside post to post for width, and from the surface to the inside of the crossbar for height
Tube is measured by outside diameter, pipe is measured by inside diameter.