060101H Iron Pipe And Fittings By Fbs / Jcw

Front 1

Iron Pipe & Fittings
060101h

by JCW

modified from Fluffybunnyshoes

Front 2

What does Std stand for?
What does Sch stand for?

Back 2

Standard
Schedule

Front 3

What does XS stand for? XXS?

XH? XXH?

Back 3

Extra Strong, Extra Extra Strong

Extra Heavy, Extra Extra Heavy

Front 4

What is the difference between inside diameter (ID) and nominal pipe size (NPS)?

Back 4

ID is the diameter of the pipe's bore

Nominal pipe size is measured by the outside diameter (OD).

Front 5

Why is galvanized iron pipe difference from black iron pipe?

Back 5

Galvanized pipe has a coating of zinc for corrosion protection.

Black iron has a coating of black paint

Hint 5

Difference in coatings

Front 6

If a 3" NPS has an actual inside diameter of 2.1" and a wall thickness of 0.5" what is the exact outside diameter of the pipe?

Back 6

2.1 + 0.5 + 0.5 = 3.1

Hint 6

Diameter + 2x Wall Thickness

Front 7

What grade should be used with the following pressures?
150 psi
200 psi
1000 psi

Back 7

150 psi = Standard Sch 40
200 psi = XS sch 80

1000 psi = XXS

Front 8

What percent of carbon is found in Steel pipes?

Cast Iron Pipe?

Back 8

Steel: 0.1% to 0.2%

Cast Iron: 1.8% to 4.8%

Front 9

What does the schedule number of a pipe designate?

Back 9

How much pressure the pipe can handle before failure. Its loosely based on the formula:

Pressure / stress ratio x 100

Front 10

At what size of standard pipe does wall thickness remain the same?

What is that wall thickness?

Back 10

14" pipe

Wall thickness = 0.375"

Front 11

When an ferrous pipe is said to be an alloy, what does that mean? Give examples of these alloys

Back 11

It means another metal is added to improve the pipe's characteristics.

Chromium added = stainless steel (better corrosion resistance)

Silica added = Grey iron (stronger but more brittle)

Front 12

List three different types of alloyed steel pipe. What is added?

Back 12

1) Copper bearing pipes - Copper

2) Stainless steel - Chromium & Nickel

3) Chrome - Chromium

Front 13

ASPT stands for? NPT?

What is the angle for an ASPT or NPT pipe?

And it's pitch?

Back 13

American Standard Pipe Thread, National Pipe Thread

60 degrees.

Pitch is the taper of the pipe thread. 1" increase in diameter for 16" of thread

Front 14

The distance by which a fitting advances for one complete turn is called the?

Back 14

Pitch of a thread.

Front 15

Male threads are on the outside or inside of the pipe?

And what is an alternative name for them?

Back 15

On the outside

External threads

Front 16

What are the 5 different methods of taking pipe measurements?

Back 16

E - E (End to End)
Fc - Fc (Face to Face)
C - C (Center to Center)
Fc - C (Face to Center)

E - C (End to Center)

Front 17

What is the difference between a coupling and a thread protector?

Back 17

Coupling protector has no pitch (parallel threads) & is only used in transportation of materials.

Thread protector has the same pitch as the pipe it is protection.

Front 18

List 4 reasons for using lubrication oil when threading pipe?

Back 18

1) Cool it
2) Lubricate it
3) Flush out the swarf

4) Creates a better finished product

Front 19

If your threads are ragged, what are 3 common reasons why that happened?

Back 19

1) Not enough lubrication
2) Worn out die heads

3) Material stuck in die heads

Front 20

What are three problems that can occur if you do not remove burrs from the inside of a pipe.

Back 20

1) Pressure loss due to friction

2) Wear through the pipe

3) Blockages

Front 21

If a galvanized pipe is threaded, is the thread protected by the galvanizing?

Back 21

The threading process removes the zinc coating, thus making it no longer galvanized

Front 22

Why do we use jointing compounds?

Back 22

To lubricate our pipe, which reduces friction.

Front 23

When making threaded joints, to which thread should you apply the jointing compound?

Back 23

Male threads only, so the jointing compound gets squeezed out, not squeezed into the pipe when joining pipe

Front 24

Which reamer do you use for hand threading?

Back 24

Spiral or straight flute.

Front 25

Which reamer do you use on a power threader?

Back 25

Only straight flute.

Front 26

What type of lubricating oil would you use on:
Copper?

Back 26

Mineral oil

Front 27

What type of lubricating oil would you use on:

Stainless steel?

Back 27

High sulphur content oil, as it can withstand higher temperatures

Front 28

What type of lubricating oil would you use on:

Brass?

Back 28

Soapy water

Front 29

What type of lubricating oil would you use on:

Steel or wrought iron?

Back 29

Thread cutting oil

Front 30

Name 3 methods of joining pipe.

Back 30

Threaded, welded, flanged

Front 31

What are the two main types of steel pipe cutters we use?

Back 31

Single wheel and multi wheel

Front 32

What is an advantage and disadvantage of a single wheel cutter?

Back 32

A - Small outer burrs

D - Requires a 360 degree turn to cut

Front 33

What is an advantage and disadvantage of a double wheel cutter?

Back 33

A - Used in tight places

D - Larger outer burrs, may spiral on pipe, will require filing.

Front 34

What effect does large burrs have on pipe joining and how can this be avoided

Back 34

The fitting won't start

Use single wheel cutters if possible and file off any burrs that result from cutting

Front 35

The first thread cut by the dies is the _______ thread cut because of the designed taper of the thread

Back 35

Deepest

Front 36

As the size of the pipe increases the number of threads cut per inch generally ________

Back 36

Decreases

Front 37

Cutting a shallower thread rather than a standard thread will make the fitting _____ to start

Back 37

Harder

Front 38

All pipe fittings have a ________ thread

Back 38

Tapered

Front 39

Standard threads are all _______ hand threads

Back 39

Right

Front 40

When screwing on a fitting, it must be turned ______

Back 40

Clockwise

Front 41

Imperfect or torn pipe threads can result in ______ joints

Back 41

Leaky

Front 42

A bolt thread has a _______ thread

Back 42

parallel

Front 43

The larger the pipe, the _____ threads per inch are cut

Back 43

less

Front 44

Applying insufficient oil when cutting threads will result in _____________ threads

Back 44

Torn or broken

Front 45

Improperly adjusted dies will result in ___________________ a thread

Back 45

Too loose or too tight

Front 46

For 2" pipe, as you go from Sch 40 to Sch 80, does the inside diameter change? Outside diameter? Why?

Back 46

As you go from Sch 40 to Sch 80, the ID gets smaller and pipe walls get thicker to withstand more pressure. The OD stays the same for both Sch 40 & 80 so it can be cut by the same tool.

Front 47

What is pickled and oiled pipe?

Back 47

Pipe that is dipped in a mild acid bath which cleans it very well and then it is given a coating which protects it from corrosion during transit

Front 48

NOTE: End finish of pipe and joining method will determine maximum operating pressure of the piping system

Front 49

What is the one code he asked us to remember from this module?

Back 49

ASME - B-31.1 Power Piping

Front 50

What's the lowest Sch number? Highest?

Back 50

Sch 10 to Sch 160

Front 51

List all the different pipe sizes, from the smallest to 12"

Back 51

1/8", 1/4", 3/8", 1/2", 3/4", 1", 1 1/4", 1 1/2", 2", 3", 4", 5", 6", 8", 10", 12"

Front 52

List all 5 types of pipe end finishes

Back 52

Plain
Threaded
Threaded and Coupled
Bevelled
Grooved

Front 53

What is the number of threads per inch to be cut for 1/2" - 3/4" pipe?
1" - 2" pipe?
2 1/2" - 4" pipe?

Back 53

1/2" - 3/4" = 14 threads
1" - 2" = 11 1/2 threads

2 1/2" - 4" = 8 threads

Front 54

Why would you use a nipple chuck?

Back 54

To cut close or space nipples

Front 55

What is fitting allowance? How is it calculated?

Back 55

Fitting allowance is the extra length gained when adding fittings to pipe.

Fitting Allowance = Throw - Thread engagement

Front 56

Besides throw & thread engagement, what two things must you know if you are to calculate the fitting allowance?

Back 56

Sch of the pipe and type of fitting it is

Front 57

What is W.O.G.?

What is W.S.P.?

Back 57

Water, Oil or Gas

Working Steam Pressure

Front 58

When describing a tee, what order do you use to identify it?

Back 58

Identify the size of the run from largest to smallest, then identify the branch

Front 59

What is a Ground Joint Union?
Rex Union?
Dart Union?

Back 59

Ground Joint - Iron to Iron seating arrangement

Rex - Iron to Brass
Dart - Bronze to Bronze

Front 60

What is a Lip Union?

Give an example of a lip union and its purpose

Back 60

Lip - Gasket between two seating faces

To physically separate the two joining pipes, used in dielectric union for hot water heater

Front 61

What is a Bushing?

Back 61

It is a union used to reduce pipe size

Front 62

What does it mean to nest a bushing?

What type of installation is it not permitted?

Back 62

To use a bushing within another bushing

Not to be used for gas installations

Front 63

Pressure Cast Iron fittings comes in two classes. What are they and what is another name for those classes? What psi are they rated for steam?

Back 63

Class 125 (Standard) - 125 psi

Class 250 (Extra Heavy) - 250 psi

Front 64

Forged Steel fittings comes in three classes. What are they? What psi are they rated for steam?

Back 64

Class 2000 - 2000 psi
Class 3000 - 3000 psi
Class 6000 - 6000 psi

Front 65

Malleable Iron fittings comes in two classes. What are they and what is another name for those classes? What psi are they rated for steam?

Back 65

Class 150 (Standard) - 150 psi

Class 300 (Extra Heavy) - 300 psi

Front 66

What are the 6 surface finishes added to steel pipe before delivery

Back 66

Lacquered
Painted
Pickled and Oiled

Galvanized
Painted
Jacketed

Front 67

When describing a length of pipe, what does TOE G/E mean?

Back 67

Threaded one end, grooved end

Front 68

How many perfect threads over an A.S.P.T have?

Back 68

Depends on the pipe size

Front 69

Pipe fittings are classified in a number of ways. What are they?

Back 69

Malleable iron
Galvanized
Cast iron
Pressure cast iron
Forged steel

Recessed cast iron

Stainless steel

Monels

Copper alloys

Front 70

Three different methods for manufacturing steel pipe

Back 70

Furnace Butt Welded
Electric Resistance Welded
Seamless

Front 71

How many degrees does a return elbow change direction of a pipe line

Back 71

180 degrees

Front 72

Another name for a drainage fittings is?

Back 72

Recessed cast iron