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From Flashcardlet > Threaded pipe shop. > Flashcards

Threaded pipe shop. Flashcards

This flashcard deck was created using Flashcardlet's card creator

0
Q
  1. Process of shaping metal by forcing it through a die.
A

Extrusion.

Ik’struzhe^n.

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1
Q
  1. A small bar of metal for farther processing?

Bolwanka.

A

Billet.

‘bilit.

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2
Q
  1. A cylindrical rod around which metal or other material is forged or shaped?
A

Mandrel.

‘maendre^l.

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3
Q
  1. What is use of pipe?
A

Pipe is used to convey a solid, liquid or gas from one point to another.

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4
Q
  1. Name the types of pipe?
A

Clay, lead, cement, copper, brass, steel, glass, cast iron, plastics.

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5
Q

6.how is steel pipe manufactured with?

A

It’s alloy of carbon, manganese, phosphorous, sulfur.

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6
Q
  1. What is tensile strength of steel pipe?
A

Aprox 48,000 psi.

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7
Q
  1. What are 3 types of steel pipe?
A
  1. Type “F”,
  2. Type”E”,
  3. Type “S”.
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8
Q

9.what is F type of steel pipe?

A

Furnace butt welded or continuous welded pipe.

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9
Q
  1. What is E type of steel pipe?
A

Electric resistance welded pipe.

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10
Q
  1. What is S type of steel pipe?
A

Seamless pipe.

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11
Q
  1. How does type F/E steel pipe make?
A

Both continuous welded and electric resistance welded pipe are made by shaping rolls of flat coil steel called “skelp” into cylindrical form and welding along the longitudinal seam.

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12
Q
  1. Name of flat coil steel for making welded pipes?
A

Skelp.

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13
Q
  1. What are two common methods of producing seamless pipe?
A
  1. Hot rotary piecing.

2. Extrusion process method.

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14
Q
  1. What is extrusion method?
A

Hot billets of metal are formed into seamless pipe by forcing the billet through extrusion die. (fForms metal to desired size and shape).

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15
Q
  1. What is Hot Rotary Piercing?
A

Most common method of producing seamless pipe. Heavy rollers rotate and advance the hot billet over a mandrel or piercing plug. Shaping and sizing is carried out by other mill rollers.

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16
Q
  1. What is the most common standards for seamless and seam welded pipe?
A

ASTM A53.

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17
Q
  1. How are steel pipe classify?
A

Steel pipe is produced in three weights or general wall thickness.

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18
Q
  1. What are three weights classifications for steel pipe?
A
  1. STD-standard.
  2. XS or XH - extra strong or extra heavy.
  3. XXS or XXH - double extra strong or double extra heavy.
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19
Q
  1. What is general wall thickness classifications for steel pipe?
A

Schedule number. For specific applications and pressures, steel pipe is manufactured in assorted schedule numbers. These schedule numbers range from 10 through 160.
10,20,30,40.60,80,100,120 and 160.

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20
Q
  1. The name of classes of steel pipe by schedule?
A

Light wall- schedule 10.
Standard- schedule 40.
Extra strong- schedule 80.
Extra extra strong- schedule 160.

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21
Q
  1. Pipe identification?
A
  1. Trade name or company name.
  2. ASTM A53 (specification number).
  3. Outside diameter.
  4. Wall thickness.
  5. Method of manufacture.
  6. Weight.
  7. Length.
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22
Q
  1. What are the method of manufacture of steel pipe avoiding to identification?
A

S- seamless.
E- welded, except butt welded.
F- butt weeded.
SW- spiral welded (large diameter).

23
Q
  1. What are coating and lining for steel pipes?
A

Galvanizing, chromium. paint, plastic, bituminous (CORAP-coal tar, Kraft paper).

24
Q
  1. What are principal alloy elements for stainless steel pipe?
A

Chromium: 4%-27% and nickel: 0%-22%.

25
Q
  1. Type of brass pipe?
A

Red brass: 85% copper, 15% zinc.

Yellow brass: 60% copper, 40% zinc. ( Low copper due to WW2 used in ammo. Weak and deteriorates ).

26
Q
  1. How does galvanized steel pipe are naked?
A
  1. Hot dipped: dip steel in molten zinc.

2. Electro plating with zinc- the best method.

27
Q
  1. What is generally steel pipe lengths?
A

Steel pipe when specified, is supplied in 21’ lengths, +or- 1/2”

28
Q
  1. What is random steel pipe lengths?
A

16’ to 22’

29
Q
  1. What is double random steel pipe lengths?
A

22’ minimum, 40’ max with avg. length of 35’.

30
Q
  1. What are steel pipe end finish?
A

The ends of the pipe are commercially available in the following finishes:
Threaded and coupled;
Threaded without coupling;
Plain end cut square;
Beveled for welding: 30* bevel with a 1/16 land;
Grooved end- cut or rolled for mechanical coupling.

31
Q
  1. What are steel pipe sizes?
A

Nominal pipe size in inches.
Most used: 1/8,1/4,3/8,1/2,3/4,1,1 1/4, 1 1/2, 2, 2 1/2,3, 3 1/2,4,5,6,8,10,12.
Available: 14,16,18,20,22,24,26,28,30,32,34,36,38,40,42.

32
Q

37.what are general types of pipe vices?

A
  1. Portable Trystand chain vice,
  2. Portable Tristand yoke vice,
    Bough equipped with ceiling brace screw, pipe rest, tool tray, pipe benders.
33
Q
  1. What are other types of pipe vices?
A 
Top screw stand chain vice ( in back up shop ),
Top screw bench chain vice,
Bottom screw bench chain vice, 
Bench yoke vice, 
Top screw post chain vice.
34
Q
  1. Types of pipe cutters?
A

Heavy duty 1 wheel,
Heavy duty 3 wheel wide roller,
Heavy duty 4 wheel.

35
Q
  1. Range of 3 wheel pipe cutters?
A 
1A- 1/8...1 1/4,
2A- 1/8...2,
3S- 1...3,
4S- 2...4,
5S- 4...6.
36
Q
  1. How do you use a pipe cutter?
A

Don’t over tighten and make at least 1 revolution to align (track) cutter.

37
Q
  1. When can you use hacksaw to cut a pipe?
A

It can be used to cut pipe in emergency.

38
Q
  1. Types of pipe reamer?
A
  1. Spiral rat he’d reamer- for hand use only, no machine;it’s set feeding.
  2. Flute ratchet reamer- for machine use; it’s not self feeding.
39
Q

49.how ream different type of pipes?

A 
Hard pipe (steel) ream after cut and before threading.
Soft pipe (alumni) ream after threading because burr add strength to prevent distortion during threading.
40
Q
  1. What is pipe threaders?
A

Pipe threaders- the stock is drop-head ratchet type, with full width dies. The dies are fixed, non adjustable; the guide is also fixed and non adjustable.

41
Q
  1. How shall you cut threads?
A

When the cut thread reaches the end of the dies, the thread is complete.
Clean out loose chips.
Raise handle only to waist when threading.

42
Q
  1. What are the types of pipe threads?
A

Internal thread- (inside the fitting);

External thread- (outside the pipe).

43
Q
  1. How does pipe threads make joint seal?
A

A thread is tapered so when an external thread is mated with an internal thread there will be no leakage.

44
Q
  1. How have the shapes and dimensions of pipe threads been established?
A

According to accepted standards.

45
Q
  1. How is the tapered pipe used in the United States called?
A

The American Standard Taper Pipe Thread.

46
Q
  1. Name of threads extremes?
A
  1. Crest, 2. Pitch, 3. Root.
    1. 2
    /\/\/\/\/\/\/\/\
    |. 3
    ——— - ——-
47
Q
  1. What is over-all length of 1/2” pipe thread and how many threads has it?
A

Over-all length of thread is 13/16.

Aprox 11 1/2 threads.

48
Q
  1. What is hand tight engagement and effective thread make up for full width 1/2 drop head?
A

Hand tight engagement 4 1/2.

Effective thread make up 1/2.

49
Q
  1. How do you make threaded 1/2 pipe joint?
A

3 to 4…4 1/2 by hand,
3 1/2 by wrench(+/-) 1/2 thread,
3 1/2 exposed (+/-) 1/2 thread.

50
Q
  1. What is taper of NTP threads?
A

1/16 of pipe diameter

51
Q

65.

What is insufficient thread engagement?

A

Thread too short or too long.

52
Q
  1. Comparison of full width and receding dies?
A

Receding dies has taper guide and moving chaser and full width die has full thread length chaser.

53
Q
  1. A cutting instrument in which two blades move past each other, like scissors but typically larger.
A

Shears.

Shirz.

54
Q
  1. Rules for Safety and Safe work practices?
A
  1. Know what tools are available for a specific type of work.
  2. Use the right tool for the job.
  3. Keep tools in good condition.
  4. Avoid wearing loose or torn clothing.
  5. Wear eye and face protection.
  6. Keep work area clean.
  7. Properly prepare tools or equipment for use, making any necessary adjustment and using only sharp cutting tools.
  8. Check work place for fall hazards.
  9. When possible secure work in a vise or with clamps.
  10. Use tools in safe and proper manner.
  11. When tools are not in use, provide a suitable means for storing and for carrying it.
  12. Make sure that electrically powered tools are properly grounded.
  13. Use extreme caution when he sling electrical cords.
  14. When an electrically powered tool is not in use, turn the switch to the off position.
  15. Give undivided attention to the work when using any type of power tool, and do not distract anyone else who may be operating one.

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