Iron Pipe And Fittings

Question 1

Metals that cannot be magnetized or will not rust are considered:

Answer 1

Non-ferrous

Question 2

Iron pipe is graded as:

Answer 2

• Standard (STD)
• Extra strong (XS
• Double extra strong (XXS or XXH)

Question 3

Wall thickness =

Answer 3

Wall thickness =

(Outside diameter -inside diameter) / 2

Question 4

Steel pipe comes in ______ foot lengths.

Answer 4

21’ (+-1/2”)

Question 5

😉Common use for steel pipe:

Answer 5

Gas lines from residential gas metres to furnaces, hot water heaters and other gas appliances
😉

Question 6

One complete turn is called the ______ of thread

Answer 6

Pitch

Question 7

Only the first ______ threads will create the seal

Answer 7

11

Question 8

Six step fabrication process for threaded pipe:

Answer 8

1) Measure the cut
2) Mark the cut
3) Cut the pipe
4) Ream the pipe
5) Thread and oil
6) Clean the thread and apply joining compound

Question 9

What is the carbon content in steel pipe?

Answer 9

.1% to .2% carbon

Question 10

NPS stands for:

Answer 10

Nominal Pipe Size

Question 11

Standard grade threaded pipe sustains pressures of up to ______ psig

Answer 11

150

Question 12

Double extra strong pipe (XXS) is used in the hydraulic systems involving pressures of _______ psi and above

Answer 12

1000

Question 13

Ferrous (fair-rust) pipe contains:
A) copper
B) lead 
C) brass
D) iron

Answer 13

D) iron

Question 14

Non-ferrous pipe may contain?
A) zinc
B) copper
C) iron
D) none of the above

Answer 14

B) copper

Question 15

The top of the thread is known as the:
A) pitch
B) crest
C) root
D) peak

Answer 15

B) crest

Question 16

Where is iron pipe used?

Answer 16

From the meter to the heater

Question 17

A piece of pipe is considered a nipple up to?

Answer 17

12”