Big Sizes Steel Pipe for Special Big Projects

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Model NO.: DN3800
Trademark: FAINOAH
Transport Package: Bulk Package
Specification: DN3800
Origin: China
HS Code: 7304319000
Model NO.: DN3800
Trademark: FAINOAH
Transport Package: Bulk Package
Specification: DN3800
Origin: China
HS Code: 7304319000

Specifications
Outside Diameter:Φ610mm-Φ7000mm(24"-276")
Wall Thickness:8mm-230mm(3/10"-9")
Quality Standards:API,DNV,ISO,DEP,EN,ASTM,DIN,BS,GB,CSA
Length:3m-100m(10'-328')
Grades:API 5L A-X90, GB/T9711 L190-L625


Production Line
The production line adopts three-roller/four-roller bending machine for forming. For the formed short pipe section, tack welding is firstly carried out by CO2 shielded arc welding, heating treatment before welding, and then internal straight welding, external straight welding, internal girth welding, and external girth welding are conducted with single wire, multi-layer and multi-pass welding. After completion of welding, the weld seam is heat preserved to reduce the weld residual stress and increase the property of stress corrosion resistance of metal. The characteristic of the production line is the wall thickness and diameter of product is large, which can be widely used for structural pipe, such as steel structural bridge, high-voltage transmission tower, sea and land wind tower, offshore platform equipment and super-long pipe piles etc.
 

Size Range

Pipe O.D.

W.T.(mm)

The Maximum Rolling Width

(mm)

Min.Yield Strength(Mpa)

In.

mm

245(B)

290(X42)

360(X52)

415(X60)

450(X65)

485(X70)

555(X80)

625(X90)

690(X100)

8mm ≤ W.T.< 25mm, 
The Max. Rolling 
Width 3000mm; 
25mm ≤W.T.< 60mm, 
The Max. Rolling 
Width 4000mm;
W.T.≥ 60mm, 
The Max. Rolling 
Width 3000mm.

24.0 

610

8-23.2

8-21.3

8-19.1

8-17.8

8-17.1

8-16.5

8-15.4

8-14.5

8-13.8

26.0 

660

8-23.5

8-21.6

8-19.4

8-18.1

8-17.3

8-16.7

8-15.6

8-14.7

8-14.0

28.0 

711

8-23.8

8-21.9

8-19.6

8-18.3

8-17.6

8-16.9

8-15.8

8-14.9

8-14.2

30.0 

762

8-24.1

8-22.1

8-19.9

8-18.5

8-17.8

8-17.1

8-16.0

8-15.1

8-14.3

32.0 

813

8-24.3

8-22.3

8-20.0

8-18.7

8-17.9

8-17.3

8-16.1

8-15.2

8-14.5

34.0 

864

8-24.5

8-22.5

8-20.2

8-18.8

8-18.1

8-17.4

8-16.3

8-15.3

8-14.6

36.0 

914

8-24.7

8-22.7

8-20.4

8-19.0

8-18.2

8-17.6

8-16.4

8-15.5

8-14.7

38.0 

965

8-24.9

8-22.9

8-20.5

8-19.1

8-18.4

8-17.7

8-16.5

8-15.6

8-14.8

39.4 

1000

8-25.0

8-23.0

8-20.6

8-19.2

8-18.4

8-17.8

8-16.6

8-15.7

8-14.9

43.3 

1100

8-25.3

8-23.2

8-20.9

8-19.4

8-18.7

8-18.0

8-16.8

8-15.8

8-15.1

47.2 

1200

8-50.0

8-50.0

8-50.0

8-50.0

8-50.0

8-50.0

8-50.0

8-47.1

8-44.9

51.2 

1300

8-50.0

8-50.0

8-50.0

8-50.0

8-50.0

8-50.0

8-50.0

8-50.0

8-50.0

55.1 

1400

8-120.0

8-109.3

8-96.7

8-89.1

8-84.9

8-81.2

8-74.8

8-69.4

8-65.1

59.1 

1500

8-122.7

8-111.7

8-98.9

8-91.0

8-86.8

8-83.0

8-76.4

8-71.0

8-66.6

63.0 

1600

8-122.9

8-112.0

8-99.1

8-91.2

8-87.0

8-83.2

8-76.6

8-71.1

8-66.7

66.9 

1700

8-123.2

8-112.2

8-99.3

8-91.4

8-87.2

8-83.3

8-76.8

8-71.3

8-66.9

70.9 

1800

8-123.4

8-112.4

8-110.0

8-110.0

8-110.0

8-110.0

8-110.0

8-110.0

8-110.0

74.8 

1900

8-160.0

8-160.0

8-160.0

8-160.0

8-160.0

8-160.0

8-148.2

8-137.5

8-129.1

78.7 

2000

8-210.0

8-210.0

8-191.9

8-176.7

8-168.5

8-161.1

8-148.4

8-137.8

8-129.3

82.7-275.6

2100-7000

8-230.0

8-217.3

8-192.2

8-177.0

8-168.8

8-161.4

8-148.6

8-138.0

8-129.5

 

 

Specifications
Outside Diameter:Φ610mm-Φ7000mm(24"-276")
Wall Thickness:8mm-230mm(3/10"-9")
Quality Standards:API,DNV,ISO,DEP,EN,ASTM,DIN,BS,GB,CSA
Length:3m-100m(10'-328')
Grades:API 5L A-X90, GB/T9711 L190-L625


Production Line
The production line adopts three-roller/four-roller bending machine for forming. For the formed short pipe section, tack welding is firstly carried out by CO2 shielded arc welding, heating treatment before welding, and then internal straight welding, external straight welding, internal girth welding, and external girth welding are conducted with single wire, multi-layer and multi-pass welding. After completion of welding, the weld seam is heat preserved to reduce the weld residual stress and increase the property of stress corrosion resistance of metal. The characteristic of the production line is the wall thickness and diameter of product is large, which can be widely used for structural pipe, such as steel structural bridge, high-voltage transmission tower, sea and land wind tower, offshore platform equipment and super-long pipe piles etc.
 

Size Range

Pipe O.D.

W.T.(mm)

The Maximum Rolling Width

(mm)

Min.Yield Strength(Mpa)

In.

mm

245(B)

290(X42)

360(X52)

415(X60)

450(X65)

485(X70)

555(X80)

625(X90)

690(X100)

8mm ≤ W.T.< 25mm, 
The Max. Rolling 
Width 3000mm; 
25mm ≤W.T.< 60mm, 
The Max. Rolling 
Width 4000mm;
W.T.≥ 60mm, 
The Max. Rolling 
Width 3000mm.

24.0 

610

8-23.2

8-21.3

8-19.1

8-17.8

8-17.1

8-16.5

8-15.4

8-14.5

8-13.8

26.0 

660

8-23.5

8-21.6

8-19.4

8-18.1

8-17.3

8-16.7

8-15.6

8-14.7

8-14.0

28.0 

711

8-23.8

8-21.9

8-19.6

8-18.3

8-17.6

8-16.9

8-15.8

8-14.9

8-14.2

30.0 

762

8-24.1

8-22.1

8-19.9

8-18.5

8-17.8

8-17.1

8-16.0

8-15.1

8-14.3

32.0 

813

8-24.3

8-22.3

8-20.0

8-18.7

8-17.9

8-17.3

8-16.1

8-15.2

8-14.5

34.0 

864

8-24.5

8-22.5

8-20.2

8-18.8

8-18.1

8-17.4

8-16.3

8-15.3

8-14.6

36.0 

914

8-24.7

8-22.7

8-20.4

8-19.0

8-18.2

8-17.6

8-16.4

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