Customizable Seamless Carbon Steel Tubes
Customizable Seamless Carbon Steel Tubes are high-quality, cold-drawn tubes designed for applications requiring precise dimensions and superior surface finish. These tubes are manufactured without any welding seams, resulting in a smoother internal surface, improved dimensional accuracy, and better mechanical properties. They are commonly used in hydraulic and pneumatic systems, automotive engineering, and mechanical engineering.
Product Advantages
These tubes conform to the following international standards:
- DIN 2391: Seamless precision steel tubes.
- EN 10305-4: Steel tubes for precision applications; technical delivery conditions.
- SAE J524: Seamless low-carbon steel tubing suitable for bending and flaring.
- ASTM A179: Standard specification for seamless cold-drawn low-carbon steel heat-exchanger and condenser tubes.
| OD | Thickness（mm） | ||||||||||
| mm | |||||||||||
| 6 | 6*1 | 6*1.5 | |||||||||
| 8 | 8*1 | 8*1.5 | 8*2 | ||||||||
| 10 | 10*1 | 10*1.5 | 10*2 | ||||||||
| 12 | 12*1 | 12*1.5 | 12*2 | 12*2.5 | |||||||
| 14 | 14*1 | 14*1.5 | 14*2 | 14*2.5 | 14*3 | ||||||
| 15 | 15*1 | 15*1.5 | 15*2 | 15*2.5 | 15*3 | ||||||
| 16 | 16*1 | 16*1.5 | 16*2 | 16*2.5 | 16*3 | ||||||
| 18 | 18*1.5 | 18*2 | 18*2.5 | 18*3 | 18*3.5 | 18*4 | |||||
| 20 | 20*1.5 | 20*2 | 20*2.5 | 20*3 | 20*3.5 | 20*4 | |||||
| 22 | 22*1.5 | 22*2 | 22*2.5 | 22*3 | 22*3.5 | 22*4 | |||||
| 25 | 25*2 | 25*2.5 | 25*3 | 25*3.5 | 25*4 | ||||||
| 28 | 28*2 | 28*2.5 | 28*3 | 28*3.5 | 28*4 | ||||||
| 30 | 30*2 | 30*2.5 | 30*3 | 30*3.5 | 30*4 | 30*4.5 | 30*5 | ||||
| 32 | 32*2 | 32*2.5 | 32*3 | 32*3.5 | 32*4 | 32*4.5 | 32*5 | ||||
| 34 | 34*2 | 34*2.5 | 34*3 | 34*3.5 | 34*4 | 34*4.5 | 34*5 | 34*6 | |||
| 35 | 35*2 | 35*2.5 | 35*3 | 35*3.5 | 35*4 | 35*4.5 | 35*5 | 35*6 | |||
| 38 | 38*2 | 38*2.5 | 38*3 | 38*3.5 | 38*4 | 38*4.5 | 38*5 | 38*6 | |||
| 40 | 40*2.5 | 40*3 | 40*3.5 | 40*4 | 40*4.5 | 40*5 | 40*6 | ||||
| 42 | 42*2.5 | 42*3 | 42*3.5 | 42*4 | 42*4.5 | 42*5 | 42*6 | ||||
| 45 | 45*2.5 | 45*3 | 45*3.5 | 45*4 | 45*4.5 | 45*5 | 45*6 | ||||
| 46 | 46*2.5 | 46*3 | 46*3.5 | 46*4 | 46*4.5 | 46*5 | 46*6 | ||||
| 48 | 48*2.5 | 48*3 | 48*3.5 | 48*4 | 48*4.5 | 48*5 | 48*6 | ||||
| 50 | 50*2.5 | 50*3 | 50*3.5 | 50*4 | 50*4.5 | 50*5 | 50*6 | ||||
| 54 | 54*3 | 54*3.5 | 54*4 | 54*4.5 | 54*5 | 54*6 | |||||
| 60 | 60*3 | 60*3.5 | 60*4 | 60*4.5 | 60*5 | 60*6 | 60*8 | ||||
| Note: 1. We can produce other specification as your requirements. 2. Surface treatment: Bright, galvanized (yellow, white, colorful), phosphated，army green passivation. |
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- High Strength and Durability: Manufactured from high-quality carbon steel, these tubes offer excellent tensile strength and resistance to deformation, ensuring longevity in various applications.
- Excellent Surface Quality: The seamless manufacturing process results in smooth internal and external surfaces, reducing friction and enhancing performance.
- Corrosion Resistance: Available with various surface treatments, such as galvanization and phosphating, to enhance durability.
- Customizable Dimensions: Tubes can be tailored to specific outer diameters (OD), wall thicknesses (WT), and lengths to meet diverse application requirements.
Below is a table summarizing the typical specifications:
| Parameter | Details |
| Outer Diameter (OD) | 4mm – 120mm |
| Wall Thickness (WT) | 0.5mm – 10mm |
| Length | Standard length of 6 meters; customizable upon request |
| Steel Grades | E235 (ST35, ST37.4), E355 (ST52, ST52.4) |
| Surface Treatments | Galvanized (zinc coating of 8 to 12μm), phosphated, bright finish |
| Delivery Condition | +N (NBK) – normalized under a controlled atmosphere |
| Shape | Round |
| Protection | Anti-rust oil applied on inner and outer surfaces; plastic covers at both ends |
The production of Customizable Seamless Carbon Steel Tubes involves the following steps:
- Perforation: Creating a hollow shell from solid steel billets.
- Pickling and Phosphating: Cleaning the surface and applying a phosphate layer to facilitate cold drawing.
- Cold Drawing/Cold Rolling: Reducing the diameter and wall thickness to achieve desired dimensions and surface finish.
- Annealing: Normalizing under a controlled atmosphere (+N or NBK) to attain uniform mechanical properties.
- Surface Treatment: Applying coatings such as galvanization or phosphating for corrosion resistance.
- Protection: Applying anti-rust oil on inner and outer surfaces and capping ends with plastic covers.
Applications
Customizable Seamless Carbon Steel Tubes are utilized in various sectors, including:
- Hydraulic and Pneumatic Systems: Used in hydraulic cylinders, pneumatic cylinders, and fluid lines.
- Automotive Industry: Employed in fuel lines, brake lines, and structural components.
- Mechanical Engineering: Applied in construction equipment, agricultural machinery, and heavy-duty vehicles.
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