• Address: 55, Netaji Subhas Road,
    Mezzanine Floor, Kolkata – 700 001

  • Call Us: (+91) 33-2262-2760
    info@snbimpex.com

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Category B. . .

  • Precision Welded ERW & CEW Boiler Pipes/Tubes
  • General Engineering Tubes, Mechanical & Structural Tubes
  • Automobiles Tubes, Cycle & Motor Cycles Tubes
  • Square & Rectangular ERW Tubes, Air Heater Tubes

Products grouped under Category B find application in:


  • Boilers
  • Super Heaters
  • Automobile Industries
  • Transformers
  • Sugar Plants
  • Furniture Industries, etc..
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The above Pipes, Tubes can be supplied by us in all Size, Length and Specifications with 3rd Party Inspection, if required

Category B - More Information
specifications.

Indian Standards

British Standards

American Specifications

IS : 1914
Carbon Steel boiler tubes and super heater tubes.
BS : 980
Steel tubes for automobile purposes.
ASTM A 178
Electric resistance welded carbon steel boiler tubes.
IS : 1978
Line pipe
BS : 1717
Steel tubes for cycle and motorcycle purposes.
ASTM A 214
Electric resistance welded carbon steel heat exchanger and condenser tubes.
IS : 2039
Steel tubes for bicycles and allied purposes
BS : 1775
Steel tubes for mechanical, structural and general engineering purposes.
JAPANESE STANDARD
JIS : G 3445
Carbon steel tubes for machine structural purposes.
IS : 3074
Steel tubes for automotive
purposes
BS : 3059
Part I & II
Low tensile carbon steel tubes with / without specified elevated temperature properties for boiler and super heater.
IS : 3601
Steel tubes for mechanical and general engineering purposes.
BS : 6323
Steel tubes for automobile, mechanical and general engineering purposes. Electric resistance welded carbon steel boiler tubes
IS : 7138
Steel tubes for furniture purposes.
IS : 8036
Mild steel transformer cooling tubes.
IS : 1161
Steel tubes for structural purposes.
IS : 4923
Hollow steel section for structural use.
 

Popular Size Range For ERW/CEW
Boiler/Air Heater Tubes

mm

In.

mm

Swg

31.75

1 1/4

3.25-1.63

10-16

33.70

3.66-1.63

9-16

34.93

1 3/8

3.66-1.63

9-16

38.10

1 1/2

3.66-1.63

9-16

40.00

3.66-1.63

9-16

41.28

1 1/58

3.66-1.63

9-16

44.45

1 3/4

3.66-1.63

9-16

49.00

1 15/16

4.06-1.63

8-16

50.80

2

4.06-1.63

8-16

57.15

2 1/4

4.06-1.63

8-16

60.30

2 3/8

4.06-1.63

8-16

63.50

2 1/2

4.06-1.63

8-16

65.00

2 9/16

4.06-1.63

8-16

69.85

2 3/4

4.06-2.64

8-12

76.20

3

3.66-2.64

9-12

82.50

3 1/4

4.47-2.95

7-11

88.90

3 1/2

4.47-2.95

7-11

101.60

4

4.47-3.25

7-10

114.30

4 1/2

4.47-3.25

7-10

Note :

1.Tubes ranging between 4.76 mm od and 31.57 mm od can also be supplied on request.
2.For hydraulic testing, the minimum length required in 3.50 mm