TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED The Steel Tube Maker
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European EN10305-5 Standard CK45 Material E235 Material High-Brightness Precision Seamless Flat Oval Steel Pipe
The products are produced in strict accordance with the European EN10305-5 standard. Carbon steel pipe billets are used
as raw materials, treated with imported lubricants from Europe, and manufactured by precision cold drawing. The EN
standard series of high-brightness precision seamless flat oval steel pipes have high dimensional accuracy and bright
inner and outer surfaces. High features, suitable for auto parts processing with high surface roughness requirements,
galvanized mechanical parts, etc.
The main materials are: 10#, 20#, 45#, 16Mn, Q235, Q345, E215, E235, E355, CK45, etc.
High-Brightness Precision Seamless Flat Oval Steel Pipe as per standard EN 10305 or DIN 2391
Chemical composition of EN 10305-1
| Steel Grade | C | Si | Mn | P | S | Al | |
| Steel name | Steel number | max | max | max | max | max | min |
| E215 | 1.0212 | 0.10 | 0.05 | 0.70 | 0.025 | 0.025 | 0.025 |
| E235 | 1.0308 | 0.17 | 0.35 | 1.20 | 0.025 | 0.025 | - |
| E355 | 1.0580 | 0.22 | 0.55 | 1.60 | 0.025 | 0.025 | - |
Mechanical and techological properties of EN 10305-1
| Mechanical properties at room temperature | |||||||||||||
| Steel grade | Minimum values for the delivery condition | ||||||||||||
| Steel name | steel nubmer | (+Cc) | (+LCc) | (+SR) | (+Ad) | (+N) NBK | |||||||
| Rm Mpa | A % | Rm Mpa | A % | Rm Mpa | ReH Mpa | A % | Rm Mpa | A % | Rm Mpa | ReH Mpa | A % | ||
| E215 | 1.0212 | 430 | 8 | 380 | 12 | 380 | 280 | 16 | 280 | 30 | 290-430 | 215 | 30 |
| E235 | 1.0308 | 480 | 6 | 420 | 10 | 420 | 350 | 16 | 315 | 25 | 340-480 | 235 | 25 |
| E355 | 1.0580 | 640 | 4 | 580 | 7 | 580 | 450f | 10 | 450 | 22 | 490-630 | 355 | 22 |
Process introduction: high-quality carbon steel, precision drawing.
Main features:
high dimensional tolerance accuracy,
good finish,
small roughness value,
stable mechanical properties;
steel pipe color: light gray with white or bright color.
Main use: mechanical parts, auto parts, etc., other customers who have high requirements on the accuracy, smoothness
and roughness of steel pipes, such as the surface needs to be galvanized, the effect is remarkable.
