API 5L X60 steel pipe,Epoxy pipe,Coated pipe,API casing

Mills produce two types of line pipe, seamless and welded

Seamless pipe is formed from a cylindrical bar of steel. The bar is heated to a high temperature and then a probe is inserted to create a hole through the cylinder. The cylinder is then transferred to rollers which size the cylinder to the specified diameter and wall thickness. A few mills can produce seamless pipe up to 24-in in diameter. For small diameter pipe, seamless pipe is common.

OD/mm

WT/mm

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

21.3

√

26.7

√

33.4

√

48.3

√

60.3

√

73

√

88.9

√

114.3

√

168.3

√

219.1

√

273.1

√

323.3

√

355.6

√

406.4

√

457.2

√

508

√

609.6

√

660.4

√

711.2

√

762

√

		Chemical Composition(%)				Tensile Strength(min)
Standard	Grade	C	Mn	P	S	Mpa	Mpa
		max	max	max	max
API 5L PSL1	GR.B	0.28	1.2	0.03	0.03	415	245
	X42	0.28	1.3	0.03	0.03	415	290
	X46	0.28	1.4	0.03	0.03	435	320
	X52	0.28	1.4	0.03	0.03	460	360
	X56	0.28	1.4	0.03	0.03	490	390
	X60	0.28	1.4	0.03	0.03	520	415
	X65	0.28	1.4	0.03	0.03	535	450
	X70	0.28	1.4	0.03	0.03	570	485
		Chemical Composition(%)				Tensile Strength	Yield Strength
Standard	Grade	C	Mn	P	S	Mpa	Mpa
		max	max	max	max
API 5L PSL2	GR.B	0.24	1.2	0.025	0.015	415-655	245-450
	X42	0.24	1.3	0.025	0.015	415-655	290-495
	X46	0.24	1.4	0.025	0.015	435-355	320-525
	X52	0.24	1.4	0.025	0.015	460-760	360-530
	X56	0.24	1.4	0.025	0.015	490-760	390-545
	X60	0.24	1.4	0.025	0.015	520-760	415-565
	X65	0.26	1.4	0.025	0.015	535-760	450-600
	X70	0.24	1.4	0.025	0.015	570-760	485-635
	X80	0.24	1.4	0.025	0.015	625-825	555-705

OD/mm

WT/mm

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

21.3

√

26.7

√

33.4

√

48.3

√

60.3

√

73

√

88.9

√

114.3

√

168.3

√

219.1

√

273.1

√

323.3

√

355.6

√

406.4

√

457.2

√

508

√

609.6

√

660.4

√

711.2

√

762

√

Hot rolled manufacturing process:

Round Pipe Billet → Heating → Punching → Three-Roller Skew Rolling → Annealing →Acid Pickling→Coating Oil (Copper Plating) → Multi-pass Cold Drawing or ColdRolling → Pipe Billet → Heat Treatment → Straightening → Hydrostatic Test or Inspection → Marking → Warehousing

Cold drawn manufacturing process:

Round Pipe Billet → Heating → Punching → Pipe Head Treatment → Annealing →Acid Pickling →

Coating Oil (Copper Plating) → Multi-pass Cold Drawing or Cold Rolling → Pipe Billet → Heat Treatment → Straightening → Hydrostatic Test or Inspection → Marking → Warehousing

		Chemical Composition(%)				Tensile Strength(min)
Standard	Grade	C	Mn	P	S	Mpa	Mpa
		max	max	max	max
API 5L PSL1	GR.B	0.28	1.2	0.03	0.03	415	245
	X42	0.28	1.3	0.03	0.03	415	290
	X46	0.28	1.4	0.03	0.03	435	320
	X52	0.28	1.4	0.03	0.03	460	360
	X56	0.28	1.4	0.03	0.03	490	390
	X60	0.28	1.4	0.03	0.03	520	415
	X65	0.28	1.4	0.03	0.03	535	450
	X70	0.28	1.4	0.03	0.03	570	485
		Chemical Composition(%)				Tensile Strength	Yield Strength
Standard	Grade	C	Mn	P	S	Mpa	Mpa
		max	max	max	max
API 5L PSL2	GR.B	0.24	1.2	0.025	0.015	415-655	245-450
	X42	0.24	1.3	0.025	0.015	415-655	290-495
	X46	0.24	1.4	0.025	0.015	435-355	320-525
	X52	0.24	1.4	0.025	0.015	460-760	360-530
	X56	0.24	1.4	0.025	0.015	490-760	390-545
	X60	0.24	1.4	0.025	0.015	520-760	415-565
	X65	0.26	1.4	0.025	0.015	535-760	450-600
	X70	0.24	1.4	0.025	0.015	570-760	485-635
	X80	0.24	1.4	0.025	0.015	625-825	555-705

Hot rolled manufacturing process:

Round Pipe Billet → Heating → Punching → Three-Roller Skew Rolling → Annealing →Acid Pickling→Coating Oil (Copper Plating) → Multi-pass Cold Drawing or ColdRolling → Pipe Billet → Heat Treatment → Straightening → Hydrostatic Test or Inspection → Marking → Warehousing

Cold drawn manufacturing process:

Round Pipe Billet → Heating → Punching → Pipe Head Treatment → Annealing →Acid Pickling →

Coating Oil (Copper Plating) → Multi-pass Cold Drawing or Cold Rolling → Pipe Billet → Heat Treatment → Straightening → Hydrostatic Test or Inspection → Marking → Warehousing

Package of carbon steel seamless pipe

Plastic caps plugged at the two sides of pipe ends

Should be avoided by the steel strapping and transport damage

Bundled signs should be uniform and consistent

The same bundle(batch) of steel pipe should be came from the same furnace.

The steel pipe has the same furnace number, the same steel grade, the same specifications.