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Hot Expanded Seamless Pipe

1. OD size: 5mm-812mm. WT: 1mm - 30mm. Length: 5m-14m,5.8m,6m,10m-12m,12m or as customer's actual request.
2. Standard: JIS G3466, EN 10219, GB/T 3094-2000, GB/T 6728-2002
3. Ends: Beveled ends or plain ends with protection cap
4. Usage: Oil/gas pipe, aerospace use, machine parts, furnace······
Availability:


What is hot expanded seamless pipe

The hot expanded seamless steel pipe is relatively low density but the contraction of the strong seamless steel pipe can be referred to as thermal expansion. The roughing finishing process for expanding the diameter of a pipe by a cross-rolling method or a drawing method. Steel pipe thickening in a short period can produce non-standard and special types of seamless tubes with low-cost and high production efficiency, the current international developments in the field of tube rolling.



Size of hot expanded seamless pipe

Nominal size


Outside Diameter


Nominal Wall Thickness (mm)

DN


NPS


OD(MM)


SCH

SCH

SCH

STD


SCH

SCH

XS


SCH

SCH

SCH

SCH

SCH

XXS


10

20

30

40

60

80

100

120

140

160

200 250 300

8 10 12

219.1 273.1 323.9

3.76 4.19 4.57

6.35 6.35 6.35

7.04 7.80 8.38

8.18 9.27 9.53

8.18 9.27 10.31

10.31 12.70 14.27

12.70 12.70 12.70

12.70 15.09 17.48

15.09 18.26 21.44

18.26 21.44 25.40

20.62 25.40 28.58

23.01 28.58 33.32

22.23 25.40 25.40

350 400 450

14 16 18

355.6 406.4 457.2

6.35 6.35 6.35

7.92 7.92 7.92

9.53 9.53 11.13

9.53 9.53 9.53

11.13 12.70 14.27

15.09 16.66 19.05

12.70 12.70 12.70

19.05 21.44 23.83

23.83 26.19 29.36

27.79 30.96 34.93

31.75 36.53 39.67

35.71 40.49 45.24

— —

500 550 600



20 22 24



508 559 610



6.35 6.35 6.35



9.53 9.53 9.53



12.70 12.70 14.27



9.53 9.53 9.53



15.09 — 17.48



20.62 22.23 24.61



12.7

26.19 28.58 30.96



32.54 34.93 38.89



38.10 41.28 46.02



44.45 47.63 52.37



50.01 53.98 59.54



— —



12.7

12.7

500 550 600

20 22 24

508 559 610

6.35 6.35 6.35

9.53 9.53 9.53

12.70 12.70 14.27

9.53 9.53 9.53

15.09 — 17.48

20.62 22.23 24.61

12.70 12.70 12.70

26.19 28.58 30.96

32.54 34.93 38.89

38.10 41.28 46.02

44.45 47.63 52.37

50.01 53.98 59.54

— —

660 700 750

26 28 30

660 711 762

7.92 7.92 7.92

12.70 12.70 12.70

— 15.88 15.88

9.53 9.53 9.53

— —

— —

12.70 12.70 12.70

— —

— —

— —

— —

— —

— —

800 850 900

32 34 36

813 864 914

7.92 7.92 7.92

12.70 12.70 12.70

15.88 15.88 15.88

9.53 9.53 9.53

17.48 17.48 19.05

— —

12.70 12.70 12.70

— —

— —

— —

— —

— —

— —



Manufacturing process of hot expanded seamless pipe

Circular hacksaw steel------furnace burning------round steel perforation------tube billet hot rolling------steel pipe straightening------steel pipe saw Head------Packing of finished steel pipe



Standard of hot expanded seamless pipe

Outside Diameter (mm) /

SCH

SCH

SCH

STD


SCH

SCH

XS


SCH

SCH

SCH

SCH

SCH

Wall Thickness (mm)

10

20

30

40

60

80

100

120

140

160

457

6.35

7.92

11.13

9.53

14.27

19.05

12.7

23.88

29.36

34.93

39.67

45.24

508

6.35

9.53

12.7

9.53

15.09

20.62

12.7

26.19

32.54

38.1

44.45

50.01

559

6.35

9.53

12.7

9.53


22.23

12.7

28.58

34.93

41.28

47.63

53.98

610

6.35

9.53

14.27

9.53

17.48

24.61

12.7

30.96

38.39

46.02

52.37

59.54

660

7.92

12.7


9.53



12.7






711

7.92

12.7

15.88

9.53



12.7






762

7.92

12.7

15.88

9.53



12.7






Remark: The above standard and specifications are just for reference, we can also produce the customized products according to customer’s requests.



Application of hot expanded seamless pipe

  • Petrochemical Industries

  • Paper industries

  • Sugar Factory

  • Cement Factory

  • Power Plant

  • Petroleum Industries

  • Chemical Industries

  • Shipbuilding Plant

  • Construction Industries

  • Steel Plant

  • Oil Mills Industries

  • Fertilizers Industries

  • Oil&Gas Industries

  • Refineries Industries

  • Defense Industries


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