Products Description: BS 6323-4 Seamless Cold Drawn Steel Pipes DOM Steel Tube China DOM Steel Tubes supplier & manufacturer, offer low price, high quality Engineering Special Steel,DOM Seamless Steel Tubes, DOM Steel Pipe,Oval steel tube etc. Steel Grade/Steel Material:
Designation
| Chemical composition(ladle analysis)
|
| C % | Si % | Mn % | P(Max)
| S(Max) % | Cr % | Mo % |
CFS 3
| 0.20 max
| 0.35 max | 0.90 max | 0.05 | 0.05
| -
| -
|
CFS 3A a
| 0.20 max | 0.10 to 0.35 | 0.60 to 1.00 | 0.05
| 0.05
| -
| -
|
CFS 4
| 0.25 max | 0.35 max | 1.20 max | 0.05
| 0.05
| -
| -
|
CFS 5 b
| 0.23 max | 0.50 max | 1.50 max | 0.05
| 0.05
| -
| -
|
CFS 6
| 0.30 to 0.40 | 0.35 max | 0.50 to 0.90 | 0.05
| 0.05
| -
| -
|
CFS 7
| 0.20 to 0.30 | 0.35 max
| 1.20 to 1.50 | 0.05
| 0.05
| -
| -
|
CFS 8 c
| 0.40 to 0.55 | 0.35 max
| 0.50 to 0.90 | 0.05
| 0.05
| -
| -
|
CFS 9
| 0.29 max | 0.35 max
| 1.50 max | 0.05
| 0.05
| -
| 0.15 to 0.25 |
CFS 10
| 0.26 max | 0.35 max
| 0.80 max | 0.05
| 0.05
| 0.80 to 1.20 | 0.15 to 0.30 |
CFS 11
| 0.45 max | 0.35 max
| 1.00 max | 0.05
| 0.05
| 0.80 to 1.20 | 0.15 to 0.30 |
Designation
| Mechanical properties and delivery condition
|
| BK d (cold finished/hard) | BKW d (cold finished/soft) | GBK and GZF (annealed) | NBK and NZF (normalized) |
| Re min N/mm2 | Rm min N/mm2 | A min % | Re
min
N/mm2 | Rm
min
N/mm2
| A
min
%
| Re
min
N/mm2
| Rm
min
N/mm2
| A
min
%
| Re
min
N/mm2
| Rm
min
N/mm2
| A
min
%
|
CFS 3
| 360 | 450 | 6 | 280 | 400 | 9 | 170 | 340 | 26 | 215 | 360 | 24 |
CFS 3A a
| 360 | 450 | 6 | 280 | 400 | 9 | 170 | 340 | 26 | 215 | 360 | 24 |
CFS 4
| 415 | 520 | 5 | 315 | 450 | 8 | 200 | 400 | 24 | 235 | 410 | 22 |
CFS 5 b
| 480 | 600 | 4 | 385 | 550 | 6 | - | - | - | 340 | 490 | 20 |
CFS 6
| 470 | 590 | 5 | 350 | 540 | 7 | 300 | 440 | 22 | 280 | 460 | 21 |
CFS 7
| 560 | 700 | 4 | 460 | 650 | 7 | - | - | - | - | - | - |
CFS 8 c
| 575 | 720 | 4 | 470 | 670 | 6 | 300 | 510 | 20 | 340 | 540 | 18 |
CFS 9
| 575
| 720
| 4
| 470
| 670
| 6 | -
| -
| -
| -
| -
| -
|
CFS 10
| 575
| 720
| 4
| 470
| 670
| 6 | -
| -
| -
| -
| -
| -
|
CFS 11
| 575
| 720
| 4
| - | 670
| 6 | -
| -
| -
| -
| -
| -
|
| Note: Welding of tubes of grades 3, 3A, 4 and 5 does not require special techniques but care should be taken and welding carried out in accordance with the guidance given in the appropriate British Standard for welding, e.g. BS 5135. The welding of other grades shown may require special technique. a Grade 3A shall be suitable for case hardening purposes. b Grain refining elements may be added at the option of the manufactures. c Steels within the limits shown, but in accordance with the chemical composition of BS 970-1, may be supplied if agreed at the time of order or enquiry. d If tubes in the BK and GKW condition are subsequently welded, braced or heated the mechanical properties in the heat affected zone may be reduced to those given for the delivery condition GBK or NBK. |
Delivery Condition:
BK, BKW, GBK, GZF, NBK, NZF
Size Range:
OD: 5.0-220mm
WT:0.5-25mm
Length: max 7000mm
DOM Steel Tube Characteristic:
Good concentricity
Good OD and ID tolerance
High Precision
Stable quality
Smooth Roughness
TORICH QUALITY ASSURANCE
Production Processs:
Seamless tube and Cold Drawing or Cold Rolling Production
Raw MaterialSteel Tube:
Production Line Cold Drawing:
Quality Inspection for Dimension:
Eddy Current Test and Ultrasonic Test:
Quality Inspection in lab:
Packing:
BS 6323-4 Seamless Cold Drawn Steel Pipes DOM Steel Tube
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