DIN 2458 Pipe
DIN 2458 Pipe
DIN 2458 is a German standard that specifies welded steel pipes used for pressure applications, mechanical engineering, and general structural purposes. These pipes are widely used in industries such as construction, water distribution, oil and gas, and industrial applications.
| Parameter | Details |
| Standard | DIN 2458 |
| Product Name | Welded Circular Steel Pipes |
| Material Grades | St 37.0, St 44.0, St 52.0 |
| Manufacturing Process | Electric Resistance Welded (ERW) / Submerged Arc Welded (SAW) |
| Outer Diameter (OD) | 10.2 mm to 2,540 mm |
| Wall Thickness (WT) | 1.6 mm to 40 mm |
| Length | 6m, 12m, or custom as per requirement |
| Surface Finish | Black, Galvanized, Painted, 3LPE Coated |
| Applications | Structural Engineering, Water Pipelines, Oil & Gas Transmission, Mechanical Engineering |
| End Finish | Plain Ends, Beveled Ends, Threaded & Coupled |
DIN 2458 Pipe Dimensions
NOMINAL PIPE SIZE OD(mm) NOMINAL WALL THICKNESS
DN NB(inch) ASME SCH10 SCH20 SCH30 STD SCH40 SCH60 XS SCH80 SCH100 SCH120 SCH140 SCH160 XXS
15 1/2″ 21.3 2.11 2.41 2.77 2.77 3.73 3.73 4.78 7.47
20 3/4″ 26.7 2.11 2.41 2.87 2.87 3.91 3.91 5.56 7.82
25 1″ 33.4 2.77 2.9 3.38 3.38 4.55 4.55 6.35 9.09
32 1.1/4″ 42.2 2.77 2.97 3.56 3.56 4.85 4.85 6.35 9.7
40 1.1/2″ 48.3 2.77 3.18 3.68 3.68 5.08 5.08 7.14 10.15
50 2″ 60.3 2.77 3.18 3.91 3.91 5.54 5.54 8.74 11.07
65 2.1/2″ 73 3.05 4.78 5.16 5.16 7.01 7.01 9.53 14.02
80 3″ 88.9 3.05 4.78 5.49 5.49 7.62 7.62 11.13 15.25
90 3.1/2″ 101.6 3.05 4.78 5.74 5.74 8.08 8.08
100 4″ 114.3 3.05 4.78 6.02 6.02 8.56 8.56 11.13 13.49 17.12
125 5″ 141.3 3.4 6.55 6.55 9.53 9.53 12.7 15.88 19.05
150 6″ 168.3 3.4 7.11 7.11 10.97 10.97 14.27 18.26 21.95
200 8″ 219.1 3.76 6.35 7.04 8.18 8.18 10.31 12.7 12.7 15.09 18.26 20.62 23.01 22.23
250 10″ 273 4.19 6.35 7.8 9.27 9.27 12.7 12.7 15.09 18.26 21.44 25.4 28.58 25.4
300 12″ 323.8 4.57 6.35 8.38 9.53 10.31 14.27 12.7 17.48 21.44 25.4 28.58 33.32 25.4
350 14″ 355.6 6.35 7.92 9.53 9.53 11.13 15.09 12.7 19.05 23.83 27.79 31.75 35.71
400 16″ 406.4 6.35 7.92 9.53 9.53 12.7 16.66 12.7 21.44 26.19 30.96 36.53 40.19
450 18″ 457.2 6.35 7.92 11.13 9.53 14.27 19.05 12.7 23.83 39.36 34.93 39.67 45.24
500 20″ 508 6.35 9.53 12.7 9.53 15.09 20.62 12.7 26.19 32.54 38.1 44.45 50.01
550 22″ 558.8 6.35 9.53 12.7 9.53 22.23 12.7 28.58 34.93 41.28 47.63 53.98
600 24″ 609.6 6.35 9.53 14.27 9.53 17.48 24.61 12.7 30.96 38.89 46.02 52.37 59.54
650 26″ 660.4 7.92 12.7 9.53 12.7
700 28″ 711.2 7.92 12.7 15.88 9.53 12.7
750 30″ 762 7.92 12.7 15.88 9.53 12.7
800 32″ 812.8 7.92 12.7 15.88 9.53 17.48 12.7
850 34″ 863.6 7.92 12.7 15.88 9.53 17.48 12.7
900 36″ 914.4 7.92 12.7 15.88 9.53 19.05 12.7
DIN 2458 Equivalent Standards & Grade
- EN 10217 – Welded steel tubes for pressure purposes
- EN 10219 – Cold-formed welded structural hollow sections
- ISO 3183 – Steel pipes for petroleum and natural gas industries
- ASTM A53 – Standard specification for pipe, steel, black and hot-dipped, zinc-coated, welded and seamless
- ASTM A500 – Standard specification for cold-formed welded and seamless carbon steel structural tubing
- BS 1387 – Steel Tubes for Use for Water, Gas, and Air
Common Grades
- St 37.2 (equivalent to S235JR in EN standard)
- St 44.2 (equivalent to S275JR in EN standard)
- St 52.0 (equivalent to S355JO in EN standard)
DIN 2458 Gr St 37.0, St 44.0, St 52.0 Chemical Composition
| Grade | C (%) | Si (%) | Mn (%) | P (%) (max) | S (%) (max) |
|---|---|---|---|---|---|
| St 37.0 | ≤ 0.17 | ≤ 0.35 | 0.40–0.70 | ≤ 0.040 | ≤ 0.040 |
| St 44.0 | ≤ 0.21 | ≤ 0.35 | 0.40–1.00 | ≤ 0.040 | ≤ 0.040 |
| St 52.0 | ≤ 0.22 | ≤ 0.55 | 1.30–1.60 | ≤ 0.040 | ≤ 0.040 |
DIN 2458 Gr St 37.0, St 44.0, St 52.0 Mechanical Properties
| Grade | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) (≥ 5d) |
|---|---|---|---|
| St 37.0 | 340 – 470 | ≥ 235 | ≥ 25 |
| St 44.0 | 420 – 550 | ≥ 275 | ≥ 21 |
| St 52.0 | 500 – 650 | ≥ 355 | ≥ 21 |
DIN 2458 Gr St 37.0, St 44.0, St 52.0 Physical Properties
| Property | Value |
| Density (g/cm³) | 7.85 |
| Melting Point (°C) | ~ 1420-1460 |
| Thermal Conductivity | ~ 50 W/m·K |
| Modulus of Elasticity | ~ 200 GPa |
Application
- Pipeline Systems
- Structural Applications
- Mechanical Engineering
- Boiler and Heat Exchangers
- Automotive Industry
- Hydraulic & Pneumatic Systems
- General Fabrication