Seamless Precision Steel Tubes
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- The name :
BS6323-6 Cold Finished Electric Resistance Welded Steel Tubes
- Product Description
- Applications: for Auto industry / for machinery use/mechanical and general engineering purposes
Size range: O.D.:6-350mm W.T.:1-30mm L:max12000mm
Production: Precision Welded Steel Tubes for Auto Parts - Model : BS6323-6
-
Instruction
Standard: BS6323-6 Seamless and Welded steel tubes for automobile,mechanical and general engineering purposes
Part 6: Specific requirements for cold finished electric resistance welded(including induction welded) steel tubes
Applications: for Auto industry / for machinery use/mechanical and general engineering purposes
Size range: O.D.:6-350mm W.T.:1-35mm L:max12000mm
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Chemical Compositions and mechanical properties |
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Design |
Chemical Compositions( ladle analysis) |
mechanical properties |
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|
C |
Si |
Mn |
P |
S |
BKc |
BKWc (cold finished/soft ) |
GBK and GZF (annealed) |
NBK and NZF (normalized) |
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|
|
max. |
max. |
max. |
max. |
max. |
Re min. |
Rm |
A |
Re min. |
Rm |
A |
Re |
Rm |
A min. |
Re |
Rm |
A |
|
|
% |
% |
% |
% |
% |
N/m |
N/m |
% |
N/m |
N/m |
% |
N/m |
N/m |
% |
N/m |
N/m |
% |
|
CEW1a |
0.13 |
__ |
0.60 |
0.050 |
0.050 |
320 |
400 |
6 |
245 |
350 |
10 |
150 |
270 |
27 |
155 |
280 |
25 |
|
CEW2a |
0.16 |
__ |
0.70 |
0.050 |
0.050 |
355 |
420 |
6 |
260 |
370 |
10 |
160 |
300 |
27 |
195 |
320 |
25 |
|
CEW3a |
0.20 |
0.35 |
0.90 |
0.050 |
0.050 |
360 |
450 |
6 |
280 |
400 |
9 |
170 |
340 |
26 |
215 |
360 |
24 |
|
CEW4b |
0.25 |
0.35 |
1.20 |
0.050 |
0.050 |
415 |
520 |
5 |
315 |
450 |
8 |
200 |
400 |
24 |
235 |
410 |
22 |
|
CEW5b |
0.23 |
0.50 |
1.50 |
0.050 |
0.050 |
480 |
600 |
4 |
385 |
550 |
6 |
__ |
__ |
__ |
340 |
490 |
20 |
|
Tolerance on diameter |
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|
diameter |
Tolerance |
|
|
over |
Up to and including |
|
|
mm |
mm |
mm |
|
|
30 |
±0.10 |
|
30 |
50 |
±0.15 |
|
50 |
70 |
±0.20 |
|
70 |
90 |
±0.25 |
|
90 |
110 |
±0.30 |
|
110 |
130 |
±0.35 |
|
130 |
160 |
±0.45 |
|
160 |
190 |
±0.55 |
|
190 |
220 |
±0.65 |
|
220 |
250 |
±0.75 |
|
Tolerance on specified cut lengths |
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|
Specified cut length |
Tolerance |
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|
over |
up to and including |
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|
mm |
mm |
mm |
|
|
|
500 |
+ |
2 |
|
- |
0 |
||
|
500 |
2000 |
+ |
3 |
|
- |
0 |
||
|
2000 |
5000 |
+ |
5 |
|
- |
0 |
||
|
5000 |
7000 |
+ |
10 |
|
- |
0 |
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|
7000 |
__ |
by agreement |
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| NOTE Closer tolerances may be obtained by agreement between the purchaser and manufacturer. | |||
|
Distance between platens for flattening test |
|
|
Designation |
Distance between platens |
|
|
% |
|
CEW 1 |
66 |
|
CEW 2 |
75 |
|
CEW 3 |
85 |
|
CEW 4 |
85 |
|
CEW 5 |
85 |
|
Minimun expansion for drift expanding test |
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|
Designation |
Expansion minimun for tube thickness |
|
|
Up to and including 4mm |
Over 4 mm up to and including 8 mm |
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|
|
% |
% |
|
CEW 1 |
12 |
8 |
|
CEW 2 |
12 |
8 |
|
CEW 3 |
10 |
6 |
|
CEW 4 |
8 |
5 |
|
CEW 5 |
8 |
5 |
Note: Special steel grade is also available, according to customer request.
For Application of:
- CONTACT US
- Mobile: 0086-(0)137 3616 4628
- Tel : 0086-574-88255925
- Fax : 0086-574-88086983
- Email : sales@steel-tubes.com
