PRODUCT: 3" En10204/3.1b Seamless Tube, Seamless Hydraulic Cylinder Tube
Product Parameters
1. Standard: EN 10305-1 / DIN 2391
2. Material: ST35/E35, ST45, ST52/E355
3. OD: 10mm~219.1mm
4. Wall Thickness: 2mm~35mm
5. Application: Precision mechanical part for car and cylinder
6. Delivery condition: NBK (The last cold forming process is followed by annealing above the upper transformation point in a controlled astmosphere. ).
7. Package: In hexagonal shape bundles wrapped with strong steel trip 2MT/Bundle.
| Chemical composition |
| Item |
Grade |
Chemical composition.% |
| C max |
Si max |
Mn |
Pmax |
S max |
| St35/E35 |
1.0308 |
0.17 |
0.35 |
≥0.40 |
0.025 |
0.025 |
| St45 |
1.0408 |
0.21 |
0.35 |
≥0.40 |
0.025 |
0.025 |
| St52/E355 |
1.0508 |
0.22 |
0.55 |
≤1.60 |
0.025 |
0.025 |
| The following alloying may be added:Nb≤0.03%,Ti≤0.03%,V≤0.05%,Nb+TI+v≤0.05% |
| Mechanical properties |
| Category |
Delivery state minimum value
|
| item |
grade |
Gold finished (hard)(BK) |
Gold finished (SOFT)(BKW) |
Gold finished and stress-relieved(BKS) |
annealed(GBK) |
normalized(NBK) |
| Rm Mpa |
A% |
Rm Mpa |
A% |
Rm Mpa |
ReH Mpa |
A% |
Rm Mpa |
A% |
Rm Mpa |
ReH |
A% |
| 1 |
St35/E235 |
480 |
6 |
420 |
10 |
420 |
315 |
14 |
315 |
25 |
340~470 |
235 |
25 |
| 2 |
St45 |
580 |
5 |
520 |
8 |
520 |
375 |
12 |
390 |
21 |
440~570 |
255 |
21 |
| 3 |
St52/E355 |
640 |
4 |
580 |
7 |
580 |
450f |
10 |
450 |
22 |
490~630 |
355 |
22 |
Pipe Production
Inspection
Third party inspection that is preferred by new customers are proved to be convincing. Through years' of operation, M/S Chengdu Derbo has established stable contact with world famous third party inspection authorities like BV, SGS, INTERTEK, etc, and more than 5000M.Tons of steel pipes/tubes from Chengdu Derbo have been inspected by them.
Packing
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