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Help CenterHot Finished Welded Steel Tubes for Aumobile BS6323-2 HFW2 HFW3 HFW4 HFW5
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Certification:ISO 9001-2008 EN 10204.3.1 TS 16949 ISO 14001 DNV LR NK
BS6323-2 HFW2 HFW3 HFW4 HFW5 Hot Finished Welded Steel Tubes for Aumobile
Standard: BS6323-2 Seamless and welded steel tubes for automobile, mechanical and general enginnering purposes
Part 2: Specific requirements for hot finished welded steel tubes
Applications: for Auto industry / for machinery use/mechanical and general engineering purposes
Size range: O.D.:6-350mm W.T.:1-30mm L:max12000mm
Method of Manufacture:
The tubes are manufactured from flat rolled strip with longitudinal sea weld by a contiuous process without the addition of filler metal, and shall be hot finished.
Delivery Condition:
The tubes are supplied in the hot finished condition.
|
Design |
Chemical Compositions( ladle analysis) |
Mechanical |
||||||
|
Cmax. |
Simax. |
Mnmax. |
Pmax. |
Smax. |
Remin. |
Rmmin. |
Amin. |
|
|
% |
% |
% |
% |
% |
N/mm2 |
N/mm2 |
% |
|
|
HFW 2 |
0.16a |
~ |
0.70 |
0.050 |
0.050 |
195 |
320 |
25 |
|
HFW 3 |
0.20a |
0.35 |
0.90 |
0.050 |
0.050 |
215 |
360 |
24 |
|
HFW 4 |
0.25 |
0.35 |
1.20 |
0.050 |
0.050 |
235 |
410 |
22 |
|
HFW 5b |
0.23 |
0.35 |
1.50 |
0.050 |
0.050 |
340 |
490 |
20 |
| NOTE Welding of tubes of these grades does not require special techniques but care should be taken and welding should be carried out in accordance with the guidance given in the appropriate British Standard for welding,e.g. BS 5135. aIf rimming or semi-killed steel is used for grade 2,the carbon content may be increased to 0.19%,and if used for grade 3,to 0.23%.bGrain refining elements may be added to this grade at the option of the manufacturer. |
|
Dimensions of hot finished welded steel tubes |
||||||
|
Outside |
Designation HFW 2 and 3 |
Designation HFW 4 and 5 |
||||
|
Thicknesses |
Thicknesses |
|||||
|
mm |
mm |
mm |
mm |
mm |
mm |
mm |
|
21.3 |
2.0 |
2.6 |
3.2 |
3.2 |
||
|
26.9 |
2.3 |
2.6 |
3.2 |
3.2 |
||
|
33.7 |
2.6 |
3.2 |
4.0 |
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