Hoberg & Driesch group
Hoberg & Driesch Sweden AB
Hydraulic
Seamless and welded cylinder tubes, piston rods and bars, HPL-Tubes
Cylinder tubes
HP-tubes
seamless, cold-drawn, Interior surface roller burnished or honed
| Grades | E355+SR (stress relief annealed after cold drawing) |
|---|---|
| Norm | EN 10305-1 |
| Certifications | MTC 3.1 according to EN 10204 |
| Tolerance | Standard H8 |
| Measurement ranges | Inner diameter 25 - 290 mm / Wall thickness 4 to 25 mm |
HPS-tubes
welded, cold drawn to the tolerances
| Grades | E355+C (cold drawn) |
|---|---|
| Norm | EN 10305-2 |
| Certifications | MTC 3.1 according to EN 10204 |
| Tolerance | Standard H9 (to H10) |
| Measurement ranges | Inner diameter 20 - 100 mm / Wall thickness 2.5 to 7.5 mm |
Piston rods and tubes
Piston rods
| Grades | 20MnV6, C45E, 42CrMo4+QT (quenched and tempered); Also induction hardened with improved corrosion resistance in 42CrMo4 +QT materials. Nickel chrome and stainless steel piston rods are also in stock. |
|---|---|
| Norm | according to international standards |
| Certifications | MTC 3.1 according to EN 10204 |
| Outer diameter | 4 to 200 mm – also in inch sizes |
| Chrome thickness | ≤ Ø 18 mm min. 13 μm / > Ø 18 mm min. 20 μm |
| Tolerance | to Ø 16 mm f8 / from Ø 17 mm f7 |
Piston tubes
| Grades | E 355+SR (stress-relief annealed) of cold-finished seamless tubes according to international standards |
|---|---|
| Norm | EN 10305-1 |
| Certifications | MTC 3.1 according to EN 10204 |
| Outer diameter | 12 to 140 mm |
| Chrome thickness | min. 20 μm |
| Tolerance | ISO f7 |
Hydraulic- and pneumatic pressure tubes (HPL-Tubes)
HPL tubes are seamless cold-drawn precision steel tubes predominantly used as pressure lines in hydraulically or pneumatically operated equipment.
Phosphated
| Grades | E235+N (normalized) · E355+N (normalized) for pulsating pressure loads in hydraulic and pneumatic systems |
|---|---|
| Norm | EN 10305-4 |
| Certifications | MTC 3.1 according to EN 10204 |
| Outer diameter | 4 to 80 mm |
| Wall thickness | 0.5 to 10 mm |
Galvanized / passivated (chrom-VI-free)
| Grades | E235+N (normalized) · E355 +N (normalized) for pulsating pressure loads in hydraulic and pneumatic systems |
|---|---|
| Norm | EN 10305-4 |
| Certifications | MTC 3.1 according to EN 10204 |
| Outer diameter | 4 to 42 mm |
| Wall thickness | 1 to 6 mm |
