ALLLAND Steel Pipe Supply
We invite you to explore ALLLAND’s DIN 2458 welded steel pipes. As a professional steel pipe manufacturer, we not only offer standard combinations of outer diameter and wall thickness but also provide customization options to meet the flexible requirements of your projects. ALLLAND also offers cut-to-length services, end finishing, and complementary corrosion protection systems, providing you with a one-stop solution that streamlines communication. From raw materials to final shipment, we enforce strict quality control and inspection procedures to ensure product consistency.
Alllandsteel is a steel pipe manufacturer based in China with 25 years of experience.
The facility spans 22,000 square meters, represents a RMB 700 million investment, and operates four production lines (JCOE, ERW, SMLS, SSAW) alongside five coating lines.
With an annual production capacity of 250,000 tons, the factory covers specifications ranging from Ø406 to Ø1524 and holds multiple international certifications (API/ASTM/EN/ISO/JIS). Focused on steel pipes, creating value for you!
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DIN 2458 is an important standard for steel pipes within the German Industrial Standards (DIN) system. It primarily applies to welded steel pipes and specifies their dimensions and tolerances, particularly for carbon steel or low-alloy steel pipes used for conveying fluids (liquids and gases) and for structural applications.
O.D.:
10.2 mm – 2020 mm
W.T.:
1.6 mm – 40 mm (or even thicker, depending on the process).
Length:
6-12 m, available in fixed or multiple lengths; custom lengths per project requirements.
Manufacturing Process:
ERW / HFW
LSAW
SAW
Steel Grades:
St 37（≈ S235）/St 44（≈ S275）/St 52
Surface & Coating:
Black/ Painting/ 3LPE / 3LPP/ Galvanized
DIN 2458 does not specify fixed dimensions; instead, it refers to general dimensioning systems and tolerance rules. Below are some commonly used specifications for reference.
| DN | OD (mm) | Common WT (mm) |
| DN15 | 21.3 | 2.0 / 2.6 / 3.2 |
| DN20 | 26.9 | 2.3 / 2.6 / 3.2 |
| DN25 | 33.7 | 2.6 / 3.2 / 3.6 |
| DN32 | 42.4 | 2.6 / 3.2 / 4.0 |
| DN40 | 48.3 | 3.0 / 3.6 / 4.0 |
| DN50 | 60.3 | 3.2 / 3.6 / 4.5 |
| DN65 | 76.1 | 3.2 / 3.6 / 4.5 / 5.0 |
| DN80 | 88.9 | 3.6 / 4.0 / 5.0 / 6.0 |
| DN100 | 114.3 | 4.0 / 5.0 / 6.0 / 6.3 |
| DN125 | 139.7 | 4.5 / 5.0 / 6.0 / 6.3 |
| DN150 | 168.3 | 5.0 / 6.0 / 7.1 / 8.0 |
| DN200 | 219.1 | 6.0 / 7.0 / 8.0 / 10.0 |
| DN250 | 273.0 | 6.0 / 7.0 / 9.0 / 10.0 |
| DN300 | 323.9 | 6.0 / 8.0 / 10.0 / 12.0 |
| DN350 | 355.6 | 6.0 / 8.0 / 10.0 / 12.7 |
| DN400 | 406.4 | 6.3 / 8.0 / 10.0 / 12.7 |
| DN450 | 457 | 6.0 / 8.0 / 10.0 / 12.7 |
| DN500 | 508 | 6.0 / 8.0 / 10.0 / 12.7 / 14.2 |
| DN600 | 610 | 6.0 / 8.0 / 10.0 / 12.7 / 14.2 |
| DN700 | 711 | 6.0 / 8.0 / 10.0 / 12.0 / 14.0 |
| DN800 | 813 | 8.0 / 10.0 / 12.0 / 14.0 / 16.0 |
| DN900 | 914 | 8.0 / 10.0 / 12.0 / 14.0 / 16.0 |
| DN1000 | 1016 | 10.0 / 12.0 / 14.0 / 16.0 |
| DN1200 | 1220 | 10.0 / 12.0 / 14.0 / 16.0 / 18.0 |
| DN1400 | 1420 | 12.0 / 14.0 / 16.0 / 18.0 / 20.0 |
| DN1600 | 1620 | 14.0 / 16.0 / 18.0 / 20.0 |
| DN2000 | 2020 | 16.0 / 18.0 / 20.0 / 25.0 |
| OD Tolerance | Typical: ±1% or ±0.5 mm (whichever is greater) |
| WT Tolerance | Typically: -12.5% (negative deviation) |
| Straightness | ≤ 0.2% × L |
| Formula for the Theoretical Weight of Steel | W=0.02466×(D−t)×t · W = kg/m · D = outer diameter (mm) · t = wall thickness (mm) |
The chemical composition requirements specified in DIN 2458 refer to base material standards (such as DIN 1626 / EN 10025) and are controlled in conjunction with the steel grade.
| Grade | Element % | ||||
| C | Mn | Si | P | S | |
| St 37 | ≤ 0.17 | ≤ 1.40 | ≤ 0.35 | ≤ 0.045 | ≤ 0.045 |
| St 44 | ≤ 0.21 | ≤ 1.50 | ≤ 0.35 | ≤ 0.045 | ≤ 0.045 |
| St 52 ⭐ | ≤ 0.22 | ≤ 1.60 | ≤ 0.55 | ≤ 0.035 | ≤ 0.035 |
DIN 2458 is characterized by low carbon content, moderate manganese content, and strict control of impurities (P/S). While ensuring weldability, it balances material strength with a certain degree of toughness.
Carbon Equivalent, CE
CEV=C+(Mn/6)+((Cr+Mo+V)/5)+((Ni+Cu)/15)
CE ≤ 0.45 (typical requirement)
| St 37 | St 44 | St 52⭐ | |
| Yield Strength, ReH | ≥ 235 MPa | ≥ 275 MPa | ≥ 355 MPa |
| Tensile Strength, Rm | 360 – 510 MPa | 410 – 560 MPa | 490 – 630 MPa |
| Elongation, A | ≥ 24% | ≥ 22% | ≥ 20% |
St 37 (≈ S235) has lower strength but offers high ductility and is easy to weld, making it suitable for low-pressure and structural applications.
St 44 (≈ S275) offers a good balance of strength and ductility and is commonly used in municipal and medium-load structures.
St 52 is the market’s leading steel grade; it offers high strength while maintaining good weldability, making it the top choice for engineering projects.
DIN 2458 does not explicitly require a Charpy impact test; however, such testing is typically conducted in low-temperature environments, for grades with specific quality requirements (e.g., St 52-3), or when specified by project specifications.
Standard mechanical property verification tests include tensile testing, bending testing, and flattening/expanding testing.
Municipal Pipelines: Water supply, drainage, and gas distribution.
Industrial Pipelines: Industrial water, compressed air.
Structural Applications: Steel frameworks, piling.
● Common steel grade: St52 (≈ S355).
Energy & Infrastructure: Water pipelines, non-critical pipelines.
● It should be noted that DIN 2458 is not suitable for use in high-pressure main oil and gas pipelines; it is primarily intended for use in medium- and low-pressure environments.
ALLLAND Steel Pipe products fully comply with multiple international standards, including DIN 2458 (such as API 5L, ASTM A53, EN 10217, etc.), and we are capable of manufacturing welded steel pipes with outer diameters ranging from Φ21.3 mm to Φ1524 mm and wall thicknesses from 2 mm to 60 mm.
With extensive experience in exports and international projects, we offer one-stop services for steel pipes with anti-corrosion coatings (3LPE, FBE, 3LPP, etc.) and ensure on-time delivery.
Please feel free to contact us with any questions; our highly professional team is here to assist you.
| Item | DIN 2458 | EN 10217 |
| Application | General | Pressure purpose |
| Impact test | ❌ Not mandatory | ✔ Standard requirement |
| Material control | General | More stringent |
| Standard system | DIN | Current EN |
| Item | DIN 2458 | API 5L |
| Application | General-purpose, low- to medium-pressure | High-pressure oil and gas pipelines |
| Strength Grade | ≤ St52（≈ S355） | Up to X80+ |
| Impact Resistance | Not required | ✔ Required |
| Inspection Requirements | Moderate | Very strict |
1.What is the DIN 2458 standard?
DIN 2458 is a German standard primarily applicable to welded steel pipes used in low- and medium-pressure fluid conveyance and structural engineering.
It is a dimensional standard and does not specify chemical composition or mechanical properties.
2.What is the difference between DIN 2458 and DIN 2448?
DIN 2448: A dimensional standard for seamless steel pipes.
DIN 2458: A dimensional standard for welded steel pipes.
