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Cold Drawn Seamless Mechanical Tube|CDS Tube
Cold Drawn Seamless Mechanical Tube|CDS Tube
Cold Drawn Seamless Mechanical Tube (CDS Tube) refers to a type of steel tubing that is produced through the cold drawing process. This process involves pulling a solid steel rod or billet through a die to reduce its diameter and achieve the desired dimensions. The term "seamless" indicates that the tube is formed without any welded seams, resulting in a continuous, uniform structure.
Features and characteristics of Cold Drawn Seamless Mechanical Tubes (CDS):
1. BS EN 10305-1 E235+C Cold Drawing Process:
The manufacturing process involves drawing the steel through a die or series of dies at room temperature (cold working), which imparts improved dimensional accuracy, surface finish, and mechanical properties to the tube.
2. BS EN 10305-1 E235+C Uniform Wall Thickness:
CDS tubes typically have a consistent and precise wall thickness throughout their length, providing better control over tolerances and dimensional accuracy.
3. BS EN 10305-1 E235+C Smooth Surface Finish:
The cold drawing process results in a smooth surface finish on the inner and outer surfaces of the tube. This is beneficial for applications where surface quality is crucial.
4. BS EN 10305-1 E235+C Mechanical Properties:
CDS tubes exhibit enhanced mechanical properties compared to hot-rolled or welded tubes. The cold working process imparts increased strength and hardness to the material.
|
Condition |
Yield |
Tensile |
Elongation |
|
|
Re Min N/mm |
Rm min N/mm |
min % |
|
As drawn |
384 min |
480 min |
6 min |
5. BS EN 10305-1 E235+C Seamless Construction:
Being seamless eliminates the presence of a welded seam, which can be a point of weakness or vulnerability in some applications. The absence of a seam also contributes to improved corrosion resistance.
6. BS EN 10305-1 E235+C Wide Range of Applications:
Cold Drawn Seamless Mechanical Tubes find applications in various industries, including automotive, machinery, precision engineering, and hydraulic systems, where precision tubing with high strength and reliability is essential.
7. BS EN 10305-1 E235+C Tight Tolerances:
The cold drawing process allows for tighter tolerances in terms of dimensions, making CDS tubes suitable for applications where precise measurements are critical.
|
Tolerances On Outside Diameter |
EN10305-1 |
|
Up to 30mm |
0.08 |
|
30 - 40mm |
0.15 |
|
40 - 50mm |
0.20 |
|
50 - 60mm |
0.25 |
|
60 - 70mm |
0.30 |
|
70 - 80mm |
0.35 |
|
80 - 90mm |
0.40 |
|
90 - 100mm |
0.45 |
|
100 - 110mm |
0.50 |
8. BS EN 10305-1 E235+C Quality Control:
The manufacturing process and the absence of welding make CDS tubes conducive to strict quality control measures, ensuring that the tubes meet specific standards and requirements.
9. BS EN 10305-1 E235+C Chemical Composition
|
C |
SI |
MN |
P |
S |
|
Max % |
Max % |
Max % |
Max % |
Max % |
|
0.17 |
0.35 |
1.20 |
0.025 |
0.025 |
10. BS EN 10305-1 E235+C Size Chart
|
|
Wall |
0.71 |
0.81 |
0.91 |
1.22 |
1.42 |
1.63 |
2.03 |
2.34 |
2.64 |
2.95 |
3.25 |
4.06 |
4.76 |
4.88 |
5.00 |
6.35 |
7.94 |
9.53 |
|
4.76 |
- |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
6.35 |
- |
|
|
• |
• |
|
• |
|
|
|
|
|
|
|
|
|
|
|
|
|
7.94 |
- |
|
|
• |
• |
|
• |
• |
|
|
|
|
|
|
|
|
|
|
|
|
9.53 |
- |
|
|
• |
• |
• |
• |
• |
|
• |
|
• |
|
|
|
|
|
|
|
|
11.11 |
- |
|
|
• |
• |
• |
• |
• |
|
|
|
|
|
|
|
|
|
|
|
|
12.70 |
- |
|
|
• |
• |
• |
• |
• |
|
• |
|
• |
|
|
|
|
|
|
|
|
14.29 |
- |
• |
|
• |
• |
|
• |
• |
|
• |
• |
• |
|
|
|
|
|
|
|
|
15.88 |
- |
|
|
• |
• |
|
• |
• |
|
• |
• |
• |
• |
|
• |
|
|
|
|
|
17.46 |
- |
|
|
• |
|
|
• |
• |
|
|
|
• |
|
|
|
|
|
|
|
|
19.05 |
- |
|
|
|
• |
|
• |
• |
|
• |
• |
• |
• |
|
• |
|
• |
|
|
|
20.64 |
- |
|
|
|
|
|
• |
• |
|
|
|
• |
|
|
|
|
|
|
|
|
22.22 |
- |
|
|
|
• |
• |
• |
• |
|
• |
• |
• |
• |
|
• |
|
• |
|
|
|
25.40 |
- |
|
|
|
• |
• |
• |
• |
• |
• |
• |
• |
• |
|
• |
|
• |
|
|
|
26.99 |
- |
|
|
|
|
|
• |
• |
|
|
|
• |
• |
|
• |
|
|
|
|
|
28.58 |
- |
|
|
|
• |
• |
• |
• |
|
• |
|
• |
• |
|
• |
|
• |
|
|
|
30.16 |
- |
|
|
|
|
|
• |
• |
|
• |
|
|
|
|
|
|
|
|
|
|
31.75 |
- |
|
|
|
• |
|
• |
• |
|
• |
|
• |
• |
|
• |
|
• |
• |
|
|
33.34 |
- |
|
|
|
|
|
• |
|
|
|
|
|
• |
|
|
|
|
|
|
|
34.93 |
- |
|
|
|
• |
|
• |
• |
|
• |
|
• |
• |
|
• |
|
• |
• |
• |
|
38.10 |
- |
|
|
|
|
|
• |
• |
|
• |
|
• |
• |
|
• |
|
• |
• |
• |
|
36.69 |
- |
|
|
|
|
|
|
|
|
|
|
• |
|
|
• |
|
|
|
|
|
40.00 |
- |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
• |
|
|
|
|
41.28 |
- |
|
|
|
|
|
• |
• |
|
• |
|
• |
• |
|
• |
|
• |
• |
• |
|
42.86 |
- |
|
|
|
|
|
|
|
|
• |
|
• |
|
|
|
|
|
|
|
|
44.45 |
- |
|
|
|
|
|
• |
• |
|
• |
|
• |
• |
|
• |
|
• |
• |
• |
|
47.63 |
- |
|
|
|
|
|
|
|
|
• |
|
• |
• |
|
• |
|
• |
• |
|
|
50.80 |
- |
|
|
|
• |
|
• |
• |
|
• |
|
• |
• |
|
• |
|
• |
• |
• |
|
53.98 |
- |
|
|
|
|
|
|
|
|
|
|
• |
|
|
• |
|
• |
• |
• |
|
57.15 |
- |
|
|
|
|
|
|
• |
|
• |
|
• |
• |
|
• |
|
• |
|
• |
|
60.33 |
- |
|
|
|
|
|
• |
|
|
|
|
• |
• |
|
• |
|
• |
• |
• |
|
63.50 |
- |
|
|
|
|
|
|
• |
|
• |
|
• |
• |
|
• |
|
• |
• |
• |
Cold Drawn Seamless Mechanical Tube|CDS Tube|BS EN 10305-1 E235+C Tubes are often used in applications where precision and reliability are paramount, such as in the production of mechanical components, hydraulic cylinders, shock absorbers, and other critical parts where the seamless, cold-drawn construction provides superior performance.
Cold Drawn Seamless Mechanical Tube|CDS Tube|BS EN 10305-1 E235+C Tubular
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