Metal Tubing and Hose Knowledge Quiz

Seamless steel tubing __________.

• is weaker than welded tubing

• is ideal for resisting internal buildup

• has a very rough internal finish

• is welded tubing that has been ground to a smooth external finish

__________ tubing is often used in aircraft hydraulic control systems because of its light weight.

• Aluminum

• Steel

• Brass

• Copper

__________ tubing is prone to corrosion in hot water lines.

• brass

• aluminum

• Seamless steel

• Reinforced PVC

All metal tubing is specified by its __________.

• actual outside diameter except copper water tubing

• actual outside diameter

• nominal diameter

• actual inside diameter

Metal tubing can be cut using __________.

• tin snips

• a utility knife

• a hacksaw

• diagonal clippers

After cutting metal tubing with a tube cutter, the end of the tube should be __________.

• reduced in diameter on a machine lathe

• deburred

• heat treated

• tinned, using solder and a heat source

A spring tube bender does not ___________, whereas a lever-type tube bender does.

• Bend thin-walled metal tubing

• Work on 1/4 inch - 5/8-inch tubing

• Indicate the angle of the bend

• Provide a smooth bend

Smooth bends in soft copper, brass, aluminum, and stainless-steel tubing can be made up to __________ degrees with a lever-type tubing bender.

• 15

• 45

• 90

• 180

When using a lever-type bender to bend soft copper tubing, the angle of the bend __________.

• is indicated on the tube bender

• must be estimated by the operator

• cannot be determined

• must not exceed 90 degrees

By multiplying the radius of the bend by __________, the tube length required to make a 90-degree bend can be calculated.

• the diameter

• the radius

• 1.57

• 2.15