DIN 2448 Pipe
DIN 2448 Pipe
DIN 2448 is a German standard that specifies the dimensions, tolerances, and technical delivery conditions for seamless circular steel pipes. These pipes are commonly used in mechanical engineering, pressure applications, and structural purposes.
| Property | Description |
| Standard | DIN 2448 |
| Product | Seamless Circular Steel Pipes |
| Material Grades | St37, St44, St52, E235, E355 |
| Manufacturing Process | Hot Finished (Hot Rolled) / Cold Drawn |
| Outer Diameter (OD) | 10.2 mm – 711 mm |
| Wall Thickness (WT) | 1.6 mm – 100 mm |
| Length | Random, Fixed, or Custom (Up to 12 Meters) |
| Surface Finish | Black, Bare, Painted, Oiled, or Galvanized |
| End Types | Plain End, Beveled End, Threaded & Coupled |
| Standards & Specifications | EN 10210, EN 10216-1, EN 10297-1 |
| Application | Structural Engineering, Mechanical Engineering, Pipelines, Pressure Vessels, Fluid & Gas Transport |
DIN 2448 Seamless Steel 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 2448 Equivalent
- EN Standard: EN 10220, EN 10216 (for seamless steel pipes)
- ISO Standard: ISO 4200 (Dimensions)
- ASTM Standard: ASTM A53, ASTM A106 (for carbon steel pipes)
- JIS Standard: JIS G3454, JIS G3456
- BS Standard: BS 1387
DIN 2448 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 2448 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 2448 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 |
Standard & Grade
Unalloyed Steel Grades (Carbon Steel)
- St 37.0 (Equivalent to S235JR)
- St 44.0 (Equivalent to S275JR)
- St 52.0 (Equivalent to S355JR)
Alloyed Steel Grades
- 13CrMo44 (Equivalent to 1.7335)
- 10CrMo910 (Equivalent to 1.7380)
- 15Mo3 (Equivalent to 1.5415)
Application
- Structural and Mechanical Engineering
- Oil & Gas Industry
- Power Plants & Energy Sector
- Automotive & Heavy Equipment Manufacturing
- Pressure Vessels & Chemical Processing Industry
- Shipbuilding & Marine Applications
