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Please select from the following Technical Specifications :

Steel Tube for Automotive Purpose
Steel Tube for Mechanical and General Engg. Purpose
Steel Tube for Bicycle and Cycle Rickshaw
Hollow Steel Section for Structural use
Steel Tube for Furniture Purpose
Steel Tube for Automotive Purpose :

BIS Specification

IS 3074

Nearest equivalent International Specification

BS : 6323
DIN : 2393
DIN : 2394
JIS G 3445
ASTM A 513
Grade ERW - 1
ERW - 2
Chemical Composition (%)
%C max %Mn %S max %P max
0.20
0.2-0.3
0.30-0.60
0.30-0.60
0.06
0.06
0.06
0.06
Mechanical Properties
YS Kgf/mm2 (Min) UTS Kgf/mm2 (Min) %El (Min) on 5.65 So
17
25
32
39
NS
NS
Weld Properties
Flattening % Drift (Min) Bend test
3t
5t
12.5
10
NS
NS
Dimensional Tolerances
OD Thickness Remarks
Over up to incl  Toll
mm mm mm
- 25 0.10
25 51 0.13
51 63 0.18
63 76 0.20
76 88 0.25
8%  
 

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Steel Tube for Mechanical and General Engg. Purpose :

BIS Specification

IS 3601

Nearest equivalent International Specification

BS : 6323
DIN : 2393
DIN : 2394
JIS G 3445
Grade WT 160
WT 200
WT 240
WT 310
Chemical Composition (%)
%C max %Mn %S max %P max
NS
NS
NS
NS
NS
NS
NS
NS
0.06
0.06
0.06
0.06
0.06
0.06
0.06
0.06
Mechanical Properties
YS Kgf/mm2 (Min) UTS Kgf/mm2 (Min) %El (Min) on 5.65 So
16
21
25
32
32
34
42
55
950 UTS
950 UTS
950 UTS
950 UTS
Weld Properties
Flattening % Drift (Min) Bend test
3t
4t
6t
8t
12.5
12.5
10.5
7.5
6D
6D
6D
6D
Dimensional Tolerances
OD Thickness Remarks
Over up to incl  Toll
mm mm mm
- 25.4 0.15
25.4 51 0.18
51 63.5 0.23
63.5 76.1 0.25
76.1 88.9 0.31
10%  
 

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Steel Tube for Bicycle and Cycle Rickshaw :

BIS Specification

IS 2039

Nearest equivalent International Specification

BS :1717
Grade ERW C1
ERW C2
ERW C3
Chemical Composition (%)
%C max %Mn %S max %P max
0.15
0.20
0.25
0.60 max
0.90 max
1.20 max
0.06
0.05
0.05
0.06
0.06
0.06
Mechanical Properties
YS Kgf/mm2 (Min) UTS Kgf/mm2 (Min) %El (Min) on 5.65 So
21
31
36
31
41
44
10
8
8
Weld Properties
Flattening % Drift (Min) Bend test
3t
5t
8t
12
10
8
NS
NS
NS
Dimensional Tolerances
OD Thickness Remarks
Over up to incl  Toll
mm mm mm
- 30 +.03/-.13
30 44.5 +.06/-14
8%  
 

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Hollow Steel Section for Structural use :

BIS Specification

IS 4923

Nearest equivalent International Specification

JIS G 3466
ASTM A500
           GR A
Grade YST 210
YST 240
YST 310
Chemical Composition (%)
%C max %Mn %S max %P max
NS
NS
NS
NS
NS
NS
0.05
0.05
0.05
0.05
0.05
0.05
Mechanical Properties
YS Kgf/mm2 (Min) UTS Kgf/mm2 (Min) %El (Min) on 5.65 So
25.4    and   over
Under          25.4
21
25
32
34
42
46
12                20
10                15
8                  10
Weld Properties
Flattening % Drift (Min) Bend test
NS
NS
NS
NS
NS
NS
NS
NS
NS
Dimensional Tolerances
OD Thickness Remarks
Outside dimensions 1% with a minimum of 0.5 mm
10% Square ness of corner 90 deg  2 deg. Radi of corners 3t max (outside)
 

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Steel Tube for Furniture Purpose :

BIS Specification

IS 7138

Nearest equivalent International Specification

JIS G 3445
Grade NS
Chemical Composition (%)
%C max %Mn %S max %P max
NS NS 0.06 0.06
Mechanical Properties
YS Kgf/mm2 (Min) UTS Kgf/mm2 (Min) %El (Min) on 5.65 So
21 33 20
Weld Properties
Flattening % Drift (Min) Bend test
5t 7.5 6D
Dimensional Tolerances
OD Thickness Remarks
Over up to incl  Toll
mm mm mm
- 21.3 0.2
21.3 - 0.3
+ not limited  -8%  
 

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These are Standard Specifications.

NS : Not Specified

Tubes can also be rolled as per Customer's Specific requirement after mutual discussion.
 
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