CONTENT

S. NO.

TEXT

PAGE NO.

1

Training certificate

6

2

Acknowledgement

7

3

Company profile

8

4

Training report

9

4.1

Raw material

9

4.1.1

Iron & Steel manufacturing

9

4.1.2

Mild steel

13

4.1.3

Galvanized iron

14

4.2

Manufacturing of steel tubes

15-23

4.3

Hydrostatic testing

23

4.4

Seam weld ultrasonic test

23-24

4.5

End beveling

24

4.6

Steel pipe quenching

24-26

4.6.1

Quenching process

27

4.6.2

Effect of quenching hardening

27

4.6.3

Equipment

28

4.7

HFI Welding

28

4.7.1

Welding process

28

4.7.2

Physical effects

29

4.7.3

Dependence of temperature profile on Frequency

29

4.7.4

4.7.5

Control of Heat input to the edges of strip

Summary

30

4.8

Crane

31

4.8.1

Overhead crane

32

4.8.2

Applications of crane

32

4.9

Steel strips

32

4.9.1

Raw material for steel strips

33

4.9.2

Specifications for steel strips

33

4.9.3

Table of process plan for steel strip

33-39

5.0

Bibliography

40

FIGURE’S CONTENT TABLE

FIG. NO.

TEXT

PAGE NO.

1

Iron and steel manufacturing

9

2

Hot rolling process

11

3

A steel roll

12

4

Steel tubes

15

5

Mild steel tubes stored in yard

16

6

Seamless steel tubes

17

7

Single welded steel tube

17

8

Steel plates slitting machine

18

9

Steel slitting process

19

10

Steel rollers

19

11

Steel tube manufacturing process

21

12

Hydrostatic testing machine

22

13

End beveling specifications

24

14

End beveled steel tube

24

15

End beveled seamed tube

25

16

Steel tube quenching

25

17

Current flow on the surface of the pipe

28

18

The effects of frequency on temperature profile in connection with HFI welding

29

19

Factor influencing heat input

30

20

Steel strips

32

21

Pickling and rinsing

34

22

Fluxing process

35