Welded Steel Tube DOM Tubing EN10305-2 for Hydraulic Steel Tubing
EN10305-2 Welded Precision Cold Drawn Steel Tubes
Applications: for Auto Industry/for Machinery Use/Oil Cylinder Tube/Motorcyle Shock Absorber
Auto shock absorber innder cylinder/Telescopic Cylinders
Size range: O.D.:6-420mm W.T.:1-50mm L:max12000mm
Supplying Steel Grade:
E155, E195, E235 E275, E355
Delivery Condition:
+C, +Lc, + SR, +A, +N
Production Method:
DOM, ERW+ Cold Drawn
ID Honing + Roller Burnish+ Skiving
Appearance:
The internal and external surface finish of the tubes is smooth, while the Weld Seam is somehow not visible or tangible.
The ID surface with roughness Ra≤4μm, the best ID smoothness we could reach Ra≤0.8μm
The inner surface can be measured and reported if this is requested by the purchaser before PO.
Applicataion:
Telescopic systems, Jack Lifting systems, Hydraulic Cylinders, Oil Cylinders etc.
Steel Grade and Chemical Compositions:
| Steel Grade | C | Si | Mn | P | S | |
| Steel Name | Steel Number | max | max | max | max | max |
| E155 | 1.0033 | 0.11 | 0.35 | 0.70 | 0.025 | 0.025 |
| E195 | 1.0034 | 0.15 | 0.35 | 0.70 | 0.025 | 0.025 |
| E235 | 1.0308 | 0.17 | 0.35 | 1.20 | 0.025 | 0.025 |
| E275 | 1.0225 | 0.21 | 0.35 | 1.40 | 0.025 | 0.025 |
| E355 | 1.0580 | 0.22 | 0.35 | 1.60 | 0.025 | 0.025 |
Note: Special steel grade is also available, according to customer request.
