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Spiral Submerged Pipe

SSAW / HSAW Steel Pipe Specification: Spiral Submerged Arc Welding Steel Pipe SSAW steel pipe is the strip by the spiral bending forming, with automatic submerged arc welding seam and seam made spiral seam welded steel pipe. It can be widely used for the following reasons in the production of...
Product Details:
Produc Name
Q345 spiral seam submerged arc welded steel pipe for hydropower plant

Standard

ASTM A 53,API 5L, GB/T9711, GB/T3091, SY/T5037, SY/T 5040,etc

Steel Grade

Q235A, Q235B, 20#, Q345(16Mn),L245(B),L290(X42), L320(X46), L360(X52),L390(X56),
L415(X60),L450(X65),L485(X70),L555(X80),L485MB(X70),L555MB(X80),etc

Longest Length

6-22 meters or to order

Wall Thickness

3.2~40mm,
SCH30, SCH40, STD, XS, SCH80, SCH160, XXS, etc

Outside Diameter

219.1mm~4064mm(8 inch~160 inch)

Surface Finish

Black Varnised,Oil coating,3PE,FBE,Epoxy,Galvanized

Application

Water, oil, gas and other liquid objects, construction,etc


SSAW / HSAW Steel Pipe Specification:

Outside Diameter

Wall Thickness

inch

mm

6.0

7.0

8.0

9.0

...

16.0

18.0

20.0

22.0

8-5/8

219.1

31.53

36.61

41.65

 

...

 

 

 

 

10-3/4

273.1

39.52

45.94

52.30

 

...

 

 

 

 

12-3/4

323.9

47.04

54.71

62.32

69.89

...

 

 

 

 

14

355.6

51.73

60.18

68.58

76.93

...

 

 

 

 

16

406.4

59.25

68.95

78.60

88.20

...

 

 

 

 

18

457

66.73

77.68

99.44

99.44

...

 

 

 

 

20

508

74.28

86.49

98.65

110.75

...

 

 

 

 

...

...

...

...

...

...

...

...

...

...

...

76

1930

 

 

 

 

...

755.23

848.75

942.07

1035.19

80

2032

 

 

 

 

...

795.48

894.03

992.38

1090.53

100

2540

 

 

 

 

...

995.93

1119.53

1242.94

1366.15

112

2845

 

 

 

 

...

1116.28

1254.93

1393.37

1531.63


Spiral Submerged Arc Welding Steel Pipe

SSAW steel pipe is  the strip by the spiral bending forming, with automatic submerged arc welding  seam and seam made spiral seam welded steel pipe.

It  can be widely used for the following reasons in the production of large  diameter steel pipe:

1)  as long as the change of forming Angle, you can use the same width of the strip  in the production of various diameter of steel pipe;

2)  because it is a continuous forming, so the length of steel tube length is not  restricted;

3)  weld spiral evenly distributed throughout the steel tube on the circumference  of a circle, so the size of the steel tube of high precision, the intensity is  also higher;

4)  equipment cost cheap, easy to change size, suitable for small batch and many  varieties of steel pipe production. Spiral steel pipe weld than straight seam  length, such as the length of L, the weld length is L/cos (theta)...


The  advantages and disadvantages of spiral steel pipe analysis: most of steel tube  defects in spiral tube is focused on the weld seam and heat affected zone, long  means that the welding defects appear probability is large, it is a long-term  constraints of the main causes of spiral weld pipe is more widely used, is also  disputed about the spiral pipe and straight seam pipe, especially compared with  UOE tube who is superior to the problem. Spiral pipe manufacturing technology  development today, we should comprehensively and correctly evaluate and  compare, rediscover the spiral pipe welding seam long problem.


In  the use process, the principal stress direction of steel tube, namely the axis  of the steel tube defect equivalent length is smaller than the straight seam  pipe; Second, the pipeline steel are based on rolling steel plate, impact  toughness have larger anisotropy, along the rolling direction of the CVN value  is perpendicular to the rolling direction of the CVN value is three times  higher.


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