rk6-1 task 1

Question 1

standard weight pipe in the older pipe specification system is roughly equivalent to which schedule in the newer system?

1. sch. 40
2. sch. 60
3. sch. 80
4. sch. 100

Answer 1

a. sch. 40

Question 2

Extra strong pipe is roughly equivalent to

1. sch. 80
2. sch. 100
3. sch. 140
4. sch. 160

Answer 2

a. sch.80

Question 3

how is pipe usually designated on a bill of materials?

1. nominal radius, inside diameter and type of pipe
2. nominal diameter, type of pipe and wall thickness
3. outside diameter, wall thickness and bore
4. schedule number, type of pipe and wall thickness

Answer 3

b. nominal diameter, type of pipe and wall thickness

Question 4

screwed or threaded fittings are used most often on

1. aluminum tubing
2. large diameter pipe
3. copper tubing
4. small diameter pipe

Answer 4

d. small diameter pipe

Question 5

a butt weld fitting is generally specified on a bill of materials by

1. nominal radius, schedule and wall thickness
2. nominal pipe diameter, wall thickness and type of fitting
3. nominal pipe diameter, wall thickness and schedule
4. nominal pipe size, wall thickness and bore

Answer 5

b. nominal pipe diameter, wall thickness and type of fitting

Question 6

match the symbols for the butt-weld fittings shown in Figure 1 with the correct term

1. eccentric reducer ______
2. concentric reducer ______
3. 45° elbow _____
4. 90° elbow _____
5. cross ______
6. return _____
7. tee _____
8. 90° reducing elbow _____
9. lateral _____
10. welded cap _____

Answer 6

1. eccentric reducer B
2. concentric reducer G
3. 45° elbow D
4. 90° elbow J
5. cross H
6. return A
7. tee E
8. 90° reducing elbow I
9. lateral F
10. welded cap C

Question 7

match the types of connection for the fitting shown in figure 2 with the correct term

1. flanged _____
2. butt-welded _____
3. threaded _____
4. socket-welded _____

Answer 7

1. flanged C.
2. butt-welded B.
3. threaded D.
4. socket-welded A.

Question 8

weldolet serves the same purpose as a

1. concentric reducer
2. 45° elbow
3. tee connection
4. lateral connection

Answer 8

c. tee connection

Question 9

which type of reducer produces a pocket where liquid can remain stagnant?

1. concentric reducer
2. eccentric reducer

Answer 9

a. concentric reducer

Question 10

which type of fitting is often used to fabricate coils?

1. weldolet
2. lateral
3. cross
4. 180° return elbow

Answer 10

d. 180° return elbow

Question 11

which type of fitting is commonly used on small diameter pipe where a leak-proof joint is critically important?

1. socket-welded
2. threaded
3. weldolet
4. flanged

Answer 11

a. socket-welded

Question 12

which type of fitting is easily dismantled for repair and maintenance procedures?

1. butt-welded
2. socket-welded
3. threaded
4. flanged

Answer 12

d. flanged