Aatir Steel, located in Cairo, Egypt, specializes in providing top-notch Carbon Steel DIN 2391-2 pipes that cater to the specific needs of today’s industrial systems. These pipes are crafted in accordance with the DIN 2391-2 standard, which pertains to seamless precision steel tubes commonly utilized in hydraulic and pneumatic systems. Renowned for their tight dimensional tolerances, smooth internal finishes, and outstanding mechanical properties, these pipes are perfect for applications where precision, strength, and surface quality are paramount. Aatir Steel offers a variety of grades, including normalized and stress-relieved options, ensuring reliable performance even in high-pressure and dynamic settings.
The production of Carbon Steel DIN 2391-2 pipes involves cold-drawn seamless processes, typically featuring low carbon content (around 0.10–0.20%), manganese levels up to 1.20%, and trace elements like phosphorus and sulfur kept within controlled limits. These pipes are engineered to provide excellent weldability, machinability, and corrosion resistance in mild environments. Mechanically, they boast tensile strengths ranging from 490–630 MPa, a yield strength of about 300–350 MPa, and impressive elongation properties (≥22%). Their cold-finished surfaces minimize friction and ensure consistent flow, making them ideal for precision applications.
| Standard | DIN 2391 |
| Grade | ST35 |
| Size | OD (4-190mm) x WT (0.5-15mm) |
| Outer Dimensions | 4.0mm – 60.0mm |
| Wall Thickness | 0.5mm – 8 mm |
| Length | max 6000mm |
| Standard | Grade | C | Si | Mn | P max | S max |
| DIN2391 | St35 | ≤0.17 | ≤0.35 | ≥0.4 | 0.025 | 0.025 |
|
Cold drawn(Mandatory) |
Cold drawn(Soft) |
Cold Drawn and Stress Release |
Anneal |
Normalizing |
||||||||
|
BK1） |
BKW1） |
(BKS) |
(GBK)1） |
(NBK)1） |
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|
Grade |
Tensile |
Elongation |
Tensile |
Elongation |
Tensile |
Yield point |
Elongation |
Tensile |
Elongation |
Tensile |
Yield point |
Elongation |
|
N/mm2 |
% |
N/mm2 |
% |
N/mm2 |
N/mm2 |
% |
N/mm2 |
% |
N/mm2 |
N/mm2 |
% |
|
|
St35 |
480 |
6 |
420 |
10 |
420 |
315 |
14 |
315 |
35 |
340~470 |
||
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
DIN 2391-2 carbon steel pipes find extensive use in hydraulic cylinders, automotive components, fuel injection systems, mechanical engineering, and precision instruments. Their high dimensional accuracy and clean inner surfaces make them suitable for fluid transfer and high-performance machinery. Additionally, these pipes are employed in control lines, brake systems, and fluid power applications across various sectors, including construction, mining, aerospace, and manufacturing. Their reliability under pressure, coupled with superior surface finish and formability, makes them a go-to choice for many industries.
Carbon Steel DIN 2391-2 tubes are considerably used in industries with high-strength precision tubing requirements. Fluid transfer is especially excellent due to the valves as they show excellent resistance to wear and pressure. Another common application is into boilers and heat exchangers because of their great resistance to heat and pressure. Carbon Steel DIN 2391-2 Tubes Other notable applications are hydraulic and pneumatic systems, automotive parts, machinery fabrication and to construction sites. Carbon steel pipes are used in the production of mechanical parts, such as shafts and axles, due to their strength and toughness. They are versatile and cost-effective, and hence are considered indispensable in industrial and structural applications
Aatir Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Cairo, Egypt.
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