Smart Fluid Systems

Products for the commercial vehicle industry

In the non-automotive sector, you benefit from our many years of experience in the development and design of pipe and hose line systems. As experts in all aspects of pipe systems, we have a wealth of knowledge that is not only utilised in our core industry. Many products in our portfolio can be adapted to other applications and industries. The applications are largely the same as in the automotive sector.

Our lines are used by various engine, construction and agricultural machinery manufacturers as well as in industrial trucks and buses. They are also used in air conditioning, heating and defence technology.

Cooling water lines

Whether high media temperatures, strong radiant heat or aggressive media - COHLINE always offers the right solution with a broad portfolio of materials and heat protection. We develop customised line systems tailored to your installation spaces - precisely fitting, efficient and economical. Our ducts are used by various engine, construction and agricultural machinery manufacturers as well as in industrial trucks and buses. They are also used in air conditioning, heating and defence technology.

Cooling electronic components

With the progress of electromobility, the relevance of effective thermal management is increasing. COHLINE supplies customised, cost-efficient solutions for cooling batteries, control units and other sensitive electronic components.

Cooling of combustion engines

Tight installation spaces and high power density generate extremely high temperatures in components such as the engine and turbocharger. An efficient cooling water circuit is essential to reliably dissipate the high amount of heat. The coolant/water mixture circulates via a coolant pump from the engine via pipe systems to the vehicle radiator. The heat is thus dissipated to the outside air, while at the same time the heat is used to heat the interior.

Brake lines

COHLINE brake lines - safety and quality without compromise

Reliable quality to the highest standards

With original COHLINE brake lines, safety, durability and manufacturing quality are our top priorities. Our production for non-automotive brake lines also meets the strictest international standards - certified in accordance with IATF 16949, ISO 14001 and ISO 45001. Our claim: products of the highest quality - developed and manufactured in accordance with a globally recognised quality and environmental management system.

Our lines are used by various engine, construction and agricultural machinery manufacturers as well as in industrial trucks and buses. They are also used in defence technology.

A perfect match: Our galvanised, Cr6-free fittings with silver-transparent passivation - compliant with EU Directives 2000/53/EC and 2002/95/EC.

We will be happy to send you catalogues and price lists on request.

Hydraulic brake lines - for repair shops and industry

From global vehicle manufacturers to local workshops: COHLINE supplies hydraulic brake lines that are trusted worldwide. They fulfil the highest safety requirements and are designed for maximum durability.

Technical structure:

  • Inner and outer layer made of EPDM
  • Two pressure carrier layers made of PET
  • Intermediate layer made of SBR+NBR
  • Resistant to DOT 3, DOT 4 and other non-petroleum-based brake fluids

Conformity to standards:

SAE J1401, FMVSS 106, GB 16897 and DIN ISO 3996

The COHLINE range of hydraulic fittings also fulfils all requirements for use in standard vehicles. The fittings are also Cr6-free, silver-transparent passivated and comply with EU directives.

Customised brake lines - individually manufactured

COHLINE manufactures hydraulic brake lines exactly according to customer specifications.

Important: Due to high safety-related requirements, brake hoses are not approved for self-assembly by end customers.

We offer training courses and suitable assembly equipment for specialised companies.

Please contact our sales department in the trade division.

COHLINE - Your partner for safe braking with a system.

Brake tubes type 1035 - corrosion-resistant, dimensionally stable, tested

Our COHLINE brake pipes type 1035 are made of double-walled rolled steel - manufactured from a single flat strip, copper-coated on the inside and outside. They are also galvanised and coated with a resistant PVF plastic layer.

Corrosion protection in the salt spray test (SS DIN 50021): 3,300 hours.

Properties:

  • High pressure stability
  • Dimensional accuracy in accordance with DIN 74234
  • Stress-free installation recommended
  • Production in accordance with the quality specifications of the German automotive industry

Oil supply lines

COHLINE oil supply lines

Oil supply lines play a central role in the oil circuit of modern construction and agricultural machinery. They transport the oil to the relevant interfaces and ensure the required operating conditions, an optimum lubricating film and long-term protection against overheating.

Whether for industrial trucks, commercial vehicles, construction/agricultural machinery or special applications: COHLINE supplies technically sophisticated line systems that function reliably even at extreme temperatures and pressures.

Functional principle

COHLINE oil supply lines are precisely matched to the customer-specific requirements profile. This type of line is designed for continuous operation under demanding thermal and mechanical conditions.

Variety of materials - adapted to every application

The choice of suitable material depends on the temperature, pressure, media resistance and installation situation. COHLINE offers a wide range of materials:

  • Metal pipes:

- Steel

- Stainless steel

- Aluminium (bare or PA-coated)

  • Plastic pipes:

- PA 6.10, PA 6.12, PPS

  • Hose lines:

- Elastomers such as AEM - with pressure-resistant braiding if required

The combination of fixed pipe sections and flexible hose elements ensures the necessary tolerance and movement compensation, especially in dynamically stressed installation situations.

Connection and sealing technology - safe, durable, application-orientated

The connection to the interfaces is made with high precision using:

  • O-ring seals, mounted on:

- Turned parts

- Compression mouldings

- Connectors

  • Plastic cables:

Connection components or connectors are either press-fitted or welded, depending on the system requirements.

COHLINE - your system partner for oil and thermal management

Our oil supply lines fulfil the highest requirements for safety, durability and media resistance - tailored to your specific application. We will be happy to advise you individually and develop the optimum solution together with you.

Fuel lines

Fuel lines for a variety of applications

Our fuel lines ensure a reliable supply to the engine - from the tank to the injection system. Depending on the application and requirements, we offer systems made of metal, plastic or combinations of materials with suitable diameters and connections.

Areas of application:

  • Commercial vehicles
  • Hybrid vehicles
  • Agricultural and construction machinery
  • Marine engines
  • Emergency power generators

Line types:

  • Low-pressure lines up to 8 bar
  • High-pressure lines up to 350 bar
  • Venting and regeneration lines up to 5 bar
  • Sensor lines with integrated pressure or temperature monitoring

Hose integration with low permeation:

  • 4-layer construction (FPM/ECO/pressurised carrier/ECO)
  • Leakage rate < 1.0×10-4 mbarl/s (helium test at 3.8 bar)

Connection fittings & connections:

- Pipe hose nipples in various materials

- Swivel and plastic fittings

- Plug connectors

- Matching compression sleeves, clic and single ear clamps, spring band clamps

Material & pipework designs:

- Flow and return lines made of hose, pipe or combination construction

- Steel and stainless steel for areas close to the engine

- Polyamide pipes with hose or metal pipe for bodywork-resistant applications and regeneration lines