Miscellaneous tubes/ tubing can be classified according to:
- Material: carbon steel tubing, low-alloy steel tubing, alloy steel tubing, stainless steel tubing, nickel alloy tubing, titanium tubing, aluminum tubing, copper tubing, zirconium tubing, special metal tubing, rubber tubing, plastic tubing, glass tubing.
- Application: pressure tubing, instrumentation tubing, hydraulic tubing, mechanical tubing, structural tubing, boiler tubing, superheater tubing, furnace tubing, heater tubing, heat exchanger tubing, cooler tubing, condenser tubing, steam tubing, water tubing.
- Fabrication Process: seamless tubing, welded tubing, extruded tubing, pierced tubing.
- Cross Section: rectangular tubing, square tubing, oval tubing, circular tubing.
- Shape & Style: serpentine tubing, U-type tubing, tube bundle, coiled tubing, spiral tubing.