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Plumbing Theory 1 > Steel Pipe > Flashcards

Steel Pipe Flashcards

1
Q

Define Piping

A

A system of pipes used to move fluids from one location to another.

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2
Q

How long has piping been used

A

Thousands of years

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3
Q

How did Agriculturalists use piping ?

A

To divert water into fields.

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4
Q

What kind of piping was used in 2000 BC China?

A

Reed.

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5
Q

When was lead piping first used?

A

First century AD Europe.

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6
Q

How far back can welded pipe be traced?

A

Early 1800’s.

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7
Q

How were first seamless metal pipes made?

A

Drilling a hole through the center of a solid cylinder.

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8
Q

Name 5 ways steel, cast iron, and copper pipes are used.

A

Drains, Wastes, vents, waterlines, processing pipes.

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9
Q

What is the newest material used for piping?

A

Plastic

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10
Q

How long has plastic been used for piping?

A

40-50 years.

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11
Q

When choosing piping material name some factors that must be accounted for.

A

Temperature, pressure, jointing method, pipe support method.

Liquid gasses or solid matter being transported? (Corrosive resistance)

Specifications, fire rating

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12
Q

What are most steel pipes made from?

A

Carbon Steel

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13
Q

What range of dimensions do steel pipes come in?

A

1/8” to 12’

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14
Q

What measurement are pipe sizes known by.

A

Nominal Pipe Size

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15
Q

What does N.P.S stand for?

A

Nominal pipe size

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16
Q

What does I.P.S stand for?

A

Iron Pipe Size

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17
Q

How are pipes larger than 12” known by?

A

Actual outside diameter (O.D)

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18
Q

What does O.D stand for?

A

Outside Diameter

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19
Q

What diameter remains constant regardless of wall thickness?

A

Outside Diameter

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20
Q

Variations is wall thickness affect what diameter?

A

I.D (Internal diameter)

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21
Q

What does SCH stand for?

A

SCHEDULE

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22
Q

Name the SCH for Light wall pipe

A

5,10,20, 30

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23
Q

Name SCH for Standard wall

A

SCH 40

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24
Q

Name SCH for Extra Strong wall

A

SCH 80

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25
Q

Name SCH for extra strong or double extra heavy

A

SCH 160

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26
Q

What is STD

A

Standard Wall

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27
Q

Abbreviation for extra strong

A

XS

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28
Q

Abbreviation for double extra strong

A

XXS

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29
Q

Abbreviation for double extra heavy

A

XXH

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30
Q

Name 3 methods of steel pipe wall construction.

A

Butt Weld
Lap Weld
Seamless

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31
Q

How do you calculate the wall thickness of any pipe?

A

Outside Diameter minus inside diameter divided by 2

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32
Q

How may Galvanized steel pipe be used?

A

Drainage System or Venting System above ground inside a building.

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33
Q

What does GSP stand for?

A

Galvanized Steel Pipe.

34
Q

If GSP is used in a drainage system what kind of fittings are used?

A

Drainage fittings.

35
Q

GSP is not to be used in a water

distribution system with what exceptions?

A

Buildings of industrial occupancy

For the repair of existing GSP systems

36
Q

Steel pipe is manufactured in what range of lengths?

A

19’ - 0” to 22’ - 6”

37
Q

How long has the threaded pipe joint been used?

A

More than 100 years

38
Q

What is the advantage of standardization?

A

Pipe can be threaded and manufactured in one country and fittings can be produced in another

39
Q

What is A.S.P.T

A

American Standard Pipe Thread

40
Q

What does N.P.S stand for?

A

Nominal Pipe Size

41
Q

What does A.P.S stand for?

A

Actual Pipe Size

42
Q

What does O.D stand for?

A

Outside Diameter

43
Q

What does I.D stand for?

A

Inside Diameter

44
Q

What is M.I.P?

A

Male Iron Pipe

45
Q

How is a Male iron pipe threaded?

A

Outside thread

46
Q

What is F.I.P?

A

Female Iron Pipe

47
Q

How is a female iron pipe threaded?

A

Inside Thread

48
Q

What is I.P.S?

A

Iron Pipe Size

49
Q

Define Running Thread

A

A long thread made with no taper and used as a nipple chuck

50
Q

What is a right hand thread?

A

Normal direction for thread (clockwise)

51
Q

What is a left hand thread?

A

Thread is cut opposite direction (counter clockwise)

52
Q

Name some uses for steel pipe

A 
Natural gas
Compressed air
Fire protection 
Heating (steam/hot water)
Drains/waste/Vents
Repairs to existing systems 
Water supplies in industrial buildings
Process piping
53
Q

What does DWV stand for?

A

Drain, Waste, Vents

54
Q

What is Black Steel Pipe

A

Protected with varnish or shellac for rust protection

55
Q

What is Galvanized Steel Pipe?

A

Zinc coated inside and out for rust protection.

56
Q

Name 2 methods of Galvanizing

A

Dipped

Electrolysis

57
Q

What is stainless steel made from?

A

Alloy of Iron/Nickel/Chromium

58
Q

Name the 5 parts of an elbow

A 
Face
Throat
Back
Fitting Allowance
Thread Engagement
59
Q

Fitting allowance is approximately equal to the

A

Piping Diameter

60
Q

How is the end of center measured?

A

End of pipe to center of the fitting

61
Q

How is Center to center measured?

A

Center of one fitting to center of another fitting.

62
Q

How is Face to Center measured?

A

From the face of one fitting to the center of another fitting

63
Q

What is Thread Engagement?

A

The amount of pipe thread necessary to make a tight connection between the pipe and the fitting

64
Q

What happens if a thread is cut too long?

A

Pipe will go too far into the fitting.

65
Q

What happens if a thread is cut too short?

A

Will not go on far enough and can leak or crack the fitting.

66
Q

What is the usual practice when cutting threads

A

Add 2 additional threads to the length past the end of the dies

67
Q

1/4” and 3/8” NPS have how many threads per inch

A

18

68
Q

1/2” and 3/4” NPS has how many threads per inch

A

14

69
Q

1”, 1 1/4”, 1 1/2”, and 2” NPS have how many threads per inch

A

11 and 1/2

70
Q

2 1/2 “ NPS have how many threads per inch

A

8

71
Q

What is the angle on American Standard Pipe?

A

60 degrees

72
Q

What range of nominal pipe diameters can use the same die chasers

A

1”-2”

73
Q

All sealants must be approved by who?

A

CSA or ULC

74
Q

What does pipe dope do?

A

Helps seal and lubricate threads

75
Q

Name 2 forms of pipe dope

A

Stick
Paste

Metallic
Non Metallic

Teflon tape

76
Q

What Teflon tape is good for all uses?

A

Pink/White

77
Q

What color Teflon tape is used for gas?

A

Yellow

78
Q

Sealants must not what?

A

Must not enter into the piping system

79
Q

What threads are sealants applied to

A

Make threads

80
Q

An 18” pipe wrench is a good choice for what diameter sized job?

A

1 and 1/4 “ or 1 and 1/2”

81
Q

Never use an 18” pipe wrench for any pipe size less than what?

A

1”

82
Q

What size pipe would a 14” pipe wrench be a good choice for?

A

3/4” pipe and fittings using 41 ft/pd

Plumbing Theory 1 (5 decks)

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