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Fluid management systems manufacturer since 1990

Fluid System Management and Custom Engineering Lines

Since 1990, RSS Kumru has manufactured turbo oil lines, injection pipes, hydraulic lines and fittings for passenger cars, commercial vehicles, tractors and construction machinery. Production takes place at its plant in Gebze, Türkiye, and serves original equipment manufacturers (OEMs) and the aftermarket.

OEM-Referenced Manufacturing

RSS Kumru manufactures precision pipes and hydraulic hoses matched to OEM reference numbers — 2,600+ parts covering European passenger cars, commercial vehicles, agricultural tractors and construction machinery, including Mercedes-Benz, Caterpillar and MAN applications. Manufacturing is carried out to technical drawing for original equipment manufacturers and to OEM reference for the aftermarket.

For example 442 070 8133

We manufacture pipes, hoses and fittings for fluid management systems.

We manufacture to technical drawing for vehicles and machinery newly developed by original equipment manufacturers (OEMs), and we supply OEM-referenced parts to the aftermarket. Cutting, bending, end forming and hose crimping are carried out under one roof, and every batch is checked in our measurement laboratory.

About the company
1990

Founded in Istanbul

Production began with diesel injection lines for tractors and brake pipes for passenger cars.

Milling under coolant on a CNC machining centre

Made in our own plant

All processes from cutting to testing are carried out in-house at our 3,500 m² plant.

Under one roof

  • CNC turning
  • CNC machining
  • Robotic tube bending
  • Tube end forming
  • Hose crimping
  • Honing
  • Pressure testing
A part being measured with a micrometer

Every batch is measured

With an optical 3D scanner, a profile projector and hardness testing.

2,600+

Parts matched to OEM references

For European passenger cars and commercial vehicles, tractors and construction machinery.

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Certified quality management system

  • ISO 9001Certified
  • IATF 16949 certification in progress

Made in our own plant, measured in our own lab.

From stock material to a tested part: the steps a tube or a hose goes through in the plant.

View the production facility

Production range

Steel tube diameter
4–25 mm
Hose diameter · R1–R18
3–60 mm
Injection lines · max. working pressure
2,000 bar
Hydraulic lines and hoses · working pressure
10–700 bar
Steel tubes stored on a rack

01 / 06

Tube stock and cutting

Production starts with the steel tube and bar held in stock. Tubes are cut to the length each part needs before they go on to bending.

Gripper of the robotic bending cell

02 / 06

CNC and robotic tube bending

Cut tubes are bent on CNC tube benders and in a robotic bending cell. The bend sequence, angles and distances come from a program written for the part.

Bent tubes with formed ends and nuts

03 / 06

Tube end forming

Tube ends are flared, beaded or swaged so that the tube seals against its nut, its fitting or the mating part.

A part being milled under coolant

04 / 06

CNC turning and machining

Nuts, nipples and connectors are turned from bar stock on CNC lathes and finished on machining centres.

A hose between the dies of the hose press

05 / 06

Hose cutting and crimping

Hose is cut to length, fitted with its ferrules and end fittings, and crimped on the hose press.

A hose being placed in the test tank

06 / 06

Hose pressure testing

Hose assemblies are tested under pressure in the closed chamber of the test bench.

Export markets

Our products are supplied to vehicle and machinery manufacturers, spare parts distributors and wholesalers. Our export markets are Germany, Italy, the Netherlands, Belgium, Austria and Sweden in Europe and, beyond Europe, the United States, Australia, the United Arab Emirates and Iran.

Export-focused supply from Turkey

Request a quote for your project.

Please send the technical drawing, sample or OEM reference number. Your enquiry will be reviewed, and we will respond with price and lead time.

How a quote request works

  1. You send the OEM number, a technical drawing or a sample.
  2. We check compatibility.
  3. We reply with price and lead time.