Hydraulic pipe

Our hydraulic tubes according to EN 10305-4 are robust, seamless lines designed for the safe transport of hydraulic fluid under high pressure up to 423 bar. Learn more...

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Illustration Hydraulic pipe according to EN 10305-4 - HMROHR-6x1
Hydraulic pipe according to EN 10305-4 - HMROHR-6x1
  • Outer-Ø (mm): 6
  • Working pressure (bar): 365
  • Type: Seamless hydraulic line pipe
  • Note: The specified operating pressures refer to straight/unmachined hydraulic pipe
  • Material: E235 (ST 37.4 + NBK)
  • Standard: EN 10305-4 (DIN 2391/C)
  • Surface: Zinc-plated; CR(VI) free
  • wall thickness: 1,0
  • other lengths available on request.
from 2,63 EUR
4,13 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
4,13 EUR excl. 17% tax
Hydraulic pipe according to EN 10305-4 - HMROHR-8x1,5
Hydraulic pipe according to EN 10305-4 - HMROHR-8x1,5
  • Outer-Ø (mm): 8
  • Working pressure (bar): 423
  • Type: Seamless hydraulic line pipe
  • Note: The specified operating pressures refer to straight/unmachined hydraulic pipe
  • Material: E235 (ST 37.4 + NBK)
  • Standard: EN 10305-4 (DIN 2391/C)
  • Surface: Zinc-plated; CR(VI) free
  • wall thickness: 1,5
  • other lengths available on request.
from 3,49 EUR
4,86 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
4,86 EUR excl. 17% tax
Hydraulic pipe according to EN 10305-4 - HMROHR-10x1,5
Hydraulic pipe according to EN 10305-4 - HMROHR-10x1,5
  • Outer-Ø (mm): 10
  • Working pressure (bar): 321
  • Type: Seamless hydraulic line pipe
  • Note: The specified operating pressures refer to straight/unmachined hydraulic pipe
  • Material: E235 (ST 37.4 + NBK)
  • Standard: EN 10305-4 (DIN 2391/C)
  • Surface: Zinc-plated; CR(VI) free
  • wall thickness: 1,5
  • other lengths available on request.
from 3,95 EUR
5,26 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
5,26 EUR excl. 17% tax
Hydraulic pipe according to EN 10305-4 - HMROHR-12x1,5
Hydraulic pipe according to EN 10305-4 - HMROHR-12x1,5
  • Outer-Ø (mm): 12
  • Working pressure (bar): 259
  • Type: Seamless hydraulic line pipe
  • Note: The specified operating pressures refer to straight/unmachined hydraulic pipe
  • Material: E235 (ST 37.4 + NBK)
  • Standard: EN 10305-4 (DIN 2391/C)
  • Surface: Zinc-plated; CR(VI) free
  • wall thickness: 1,5
  • other lengths available on request.
from 4,61 EUR
5,82 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
5,82 EUR excl. 17% tax
Product image Hydraulic pipe according to EN 10305-4 - HMROHR-15x1,5
Hydraulic pipe according to EN 10305-4 - HMROHR-15x1,5
  • Outer-Ø (mm): 15
  • Working pressure (bar): 201
  • Type: Seamless hydraulic line pipe
  • Note: The specified operating pressures refer to straight/unmachined hydraulic pipe
  • Material: E235 (ST 37.4 + NBK)
  • Standard: EN 10305-4 (DIN 2391/C)
  • Surface: Zinc-plated; CR(VI) free
  • wall thickness: 1,5
  • other lengths available on request.
from 4,37 EUR
6,55 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
6,55 EUR excl. 17% tax
Hydraulic pipe according to EN 10305-4 - HMROHR-16x2
Hydraulic pipe according to EN 10305-4 - HMROHR-16x2
  • Outer-Ø (mm): 16
  • Working pressure (bar): 259
  • Type: Seamless hydraulic line pipe
  • Note: The specified operating pressures refer to straight/unmachined hydraulic pipe
  • Material: E235 (ST 37.4 + NBK)
  • Standard: EN 10305-4 (DIN 2391/C)
  • Surface: Zinc-plated; CR(VI) free
  • wall thickness: 2
  • other lengths available on request.
from 5,48 EUR
8,45 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
8,45 EUR excl. 17% tax
Hydraulic pipe according to EN 10305-4 - HMROHR-18x2
Hydraulic pipe according to EN 10305-4 - HMROHR-18x2
  • Outer-Ø (mm): 18
  • Working pressure (bar): 226
  • Type: Seamless hydraulic line pipe
  • Note: The specified operating pressures refer to straight/unmachined hydraulic pipe
  • Material: E235 (ST 37.4 + NBK)
  • Standard: EN 10305-4 (DIN 2391/C)
  • Surface: Zinc-plated; CR(VI) free
  • wall thickness: 2
  • other lengths available on request.
from 6,09 EUR
8,97 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
8,97 EUR excl. 17% tax
Hydraulic pipe according to EN 10305-4 - HMROHR-20x2
Hydraulic pipe according to EN 10305-4 - HMROHR-20x2
  • Outer-Ø (mm): 20
  • Working pressure (bar): 201
  • Type: Seamless hydraulic line pipe
  • Note: The specified operating pressures refer to straight/unmachined hydraulic pipe
  • Material: E235 (ST 37.4 + NBK)
  • Standard: EN 10305-4 (DIN 2391/C)
  • Surface: Zinc-plated; CR(VI) free
  • wall thickness: 2
  • other lengths available on request.
from 6,61 EUR
9,41 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
9,41 EUR excl. 17% tax
Illustration Hydraulic pipe according to EN 10305-4 - HMROHR-22x2
Hydraulic pipe according to EN 10305-4 - HMROHR-22x2
  • Outer-Ø (mm): 22
  • Working pressure (bar): 181
  • Type: Seamless hydraulic line pipe
  • Note: The specified operating pressures refer to straight/unmachined hydraulic pipe
  • Material: E235 (ST 37.4 + NBK)
  • Standard: EN 10305-4 (DIN 2391/C)
  • Surface: Zinc-plated; CR(VI) free
  • wall thickness: 2
  • other lengths available on request.
from 6,98 EUR
10,66 EUR excl. 17% tax
incl. 17% tax excl. Shipping costs
10,66 EUR excl. 17% tax
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Manufactured from high-quality E235 steel and electroplated for corrosion protection, they offer excellent pressure resistance, corrosion resistance and durability. Ideal for agriculture, industry, vehicle construction and construction machinery, they reliably connect hydraulic power units, control valves and cylinders in stationary applications.

 

Hydraulic Tubes – Frequently Asked Questions

What are hydraulic tubes and what are they used for?

Hydraulic tubes are rigid lines used in hydraulic systems to transport hydraulic fluid under high pressure between components such as power units, control valves and cylinders. They are primarily installed on non-moving parts and are used in agriculture, industry, vehicle manufacturing, construction machinery and plant engineering, for example in hydraulic presses or lifting equipment.

Which materials are hydraulic tubes typically made of, and how are they protected against corrosion?

  • Material: Steel (E235+N, ST37.4) for robustness and pressure resistance
  • Stainless steel: e.g. 316L for corrosive environments
  • Corrosion protection: Electroplated (CR(VI)-free), phosphated (black or white zinc-plated)
  • Special coatings: Epoxy or EPOXY for special requirements

Which specifications and standards are relevant for hydraulic tubes?

Typical values:

  • Outside diameter: approx. 6–42 mm
  • Wall thickness: variable depending on pressure requirements
  • Operating pressure: approx. 201–478 bar, depending on dimension
  • Standards: EN 10305-4, DIN 2391 (identical to EN 10305-4 type C), DIN 2440

What are the key advantages of hydraulic tubes compared to flexible hoses?

  • High pressure resistance and strength
  • Long service life and low wear
  • Effective corrosion protection through coatings

How are hydraulic tubes processed and installed?

  • Bending: Using tube bending machines for precise, material-friendly radii
  • Mounting: Using tube clamps (welded or assembled)
  • End finishing: Flaring, cutting, serrating or thread cutting
  • Correct routing to prevent vibration and damage

What maintenance recommendations and service life information apply to hydraulic tubes?

  • Regular visual inspection for corrosion or damage
  • Leak testing of connection elements
  • Timely replacement in case of defects
  • Service life: depending on application, from several years to decades

Which factors are decisive when selecting the right hydraulic tube?

  • Operating pressure and medium temperature
  • Flow rate and hydraulic medium
  • Material selection according to operating conditions
  • Dimensioning according to standards and calculation
  • Bending radius, routing and fastening to minimize vibration

Which specific hydraulic tube variants are available and how do they differ?

Examples of variants:

  • HMROHR-6x1: Ø 6 mm, wall thickness 1 mm, 365 bar
  • HMROHR-8x1.5: Ø 8 mm, wall thickness 1.5 mm, 423 bar
  • HMROHR-22x2: Ø 22 mm, wall thickness 2 mm, 181 bar

All are seamless hydraulic tubes according to EN 10305-4, made of E235 (ST 37.4 + NBK), electroplated (CR(VI)-free). Operating pressures refer to straight, unmachined tubes. Other lengths available on request.