Why is the DP series the right choice for steelworks and hot rolling mills?

The DP series to ISO 6022 is the primary choice for steelworks thanks to its nominal pressure of 250 bar (tested at 375 bar to ISO 10100) and rugged construction. According to the manufacturer it suits rolling stands, forging presses and handling systems in steelworks — environments of high temperatures, contaminants and intense mechanical stress, under significant side loads and in the presence of abrasive dust and corrosive agents.

What nominal and test pressure does the DP series have?

The heavy-duty DP series to ISO 6022 works at a nominal pressure of 250 bar and is 100% tested at 375 bar to ISO 10100. Bore diameters are Ø 50–200 mm, the maximum stroke is 6000 mm and the reference force reaches 730 kN, which predestines it for hot rolling mills, forging presses and heavy handling in steelworks.

Which applications in power generation and steelworks are the cylinders suited to?

Typically hot rolling mills, foundries, handling of ingots and slabs, ladle tilting and tapping, forging presses, and hydraulics in power generation — actuation of valves and dampers, and control around boilers and turbines. Wherever high force, resistance to heat and dust, and long service life in continuous operation are decisive.

How do DP cylinders resist the abrasive dust and corrosive agents of steelworks?

According to the manufacturer, the DP series is designed for environments with abrasive dust and corrosive agents. For machines exposed to corrosion and abrasion, DP is fitted with the RM metal scraper, the H seal (Viton FKM) up to 150 °C and a corrosion-resistant RRX / RRK rod.

When should a TP servo cylinder be chosen in a foundry or steelworks?

The TP servo cylinder to ISO 6022 with integrated position measurement is chosen where rod-position control and repeatability are required — heavy-duty automation, foundries, steelworks and forging presses with synchronised movements. It shares the heavy-duty construction of DP, so it withstands equally demanding operating environments.

What are the HD / HK flange cylinders for in power generation?

The HD / HK flange cylinders to ISO 6020/2 (210 bar, tested at 315 bar, Ø 50–200 mm, stroke up to 4000 mm) are the secondary choice for very long strokes — they eliminate tie-rod stretch under load and maintain geometric stability. In power generation they are used for actuating valves and dampers.

Which seals should be chosen for the hot environment of steelworks?

Four configurations are available: S (high seal up to 0.5 m/s), L (low-friction PTFE up to 1 m/s), H (Viton for oil temperatures up to +150 °C, typical in hot rolling mills and around furnaces) and G (PTFE CG for HFC fluids). For hot, dusty workplaces the usual variant is H with a metal scraper ring.

Can the cylinders be supplied with adjustable end-of-stroke cushioning?

Yes. Adjustable hydraulic cushioning is particularly important on heavy cylinders for handling ingots and slabs — variant K cushions at both ends, V only on extension and Z only on retraction. The cushioning protects the structure against shocks on arrival and is recommended for steelworks and foundries.

Are the cylinders 100% tested, and what about service life?

Every cylinder undergoes a 100% pressure test to ISO 10100 (DP test pressure 375 bar). The bronze rod guide bushing and the adjustable end cushioning extend service life in the continuous operation of steelworks, hot rolling mills and power plants.

Hydraulic Cylinders for Power Generation and Steelworks

DP (ISO 6022, 250 bar) · servo TP · HD / HK (ISO 6020/2)

For steelworks, hot rolling mills, foundries and power-generation hydraulics, the primary choice is the heavy-duty DP double-acting hydraulic cylinders to ISO 6022 — nominal pressure 250 bar, tested at 375 bar to ISO 10100, bore Ø 50–200 mm, stroke up to 6000 mm and a reference force of 730 kN. DP withstands high temperatures, abrasive dust, corrosive agents and significant side loads.

The TP servo cylinder controls the rod position in foundries and forging presses; the HD / HK flange cylinders to ISO 6020/2 (210 bar) handle very long strokes and the actuation of valves and dampers.

250 bar
DP · ISO 6022 (nominal): 375 bar
test pressure (ISO 10100): 730 kN
reference force (DP): up to 6000 mm
max. stroke (DP)

Select your cylinder configuration CAD 3D models DP datasheet (PDF)

ISO 6022 Steelworks Heavy-duty 250 bar Energetika

Power generation and steelworksDP — heavy-duty ISO 6022, 250 barTested at 375 bar to ISO 10100Resistant to dust, heat and corrosionServo TP — position control in the foundryHD / HK — long strokes, 210 barDelivery in 14 days · urgent 48 h

Servo TP Controlling the rod position in a foundry or steelworks? For synchronised movements, repeatability and precise continuous position control, the TP servo series to ISO 6022 with integrated measurement is used. It shares the heavy-duty construction of DP, so it withstands the equally demanding environment of forging presses and foundries. More about TP servo cylinders → DP / TP Are corrosive agents and abrasive dust attacking the cylinders? The DP series takes on demanding environments — the RM metal scraper against dust and abrasion, the H seal (Viton FKM) up to 150 °C and a corrosion-resistant RRX / RRK rod. Ideal where an ordinary chrome-plated rod is not enough. More about DP / TP cylinders (ISO 6022) →

Configurator

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Set the series, mounting, bore and stroke directly in the manufacturer’s CodeWizard. It builds the exact cylinder, generates the configuration code (SKU) and a technical datasheet, lets you download the CAD model, and sends your request for quotation straight to us — no separate inquiry form needed.

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Three solutions for power generation and steelworks

When to choose a counterflange, heavy-duty or servo cylinder?

The heavy-duty DP (ISO 6022, 250 bar) is the primary series for steelworks, hot rolling mills and forging presses — it withstands abrasive dust, high temperatures and corrosive agents. The TP servo controls the rod position in foundries and forging presses. The flange HD / HK (ISO 6020/2, 210 bar) are the secondary choice for very long strokes and the actuation of valves and dampers in power generation.

Industrial applications

Typical deployments in power generation and steelworks

Hot rolling mills, foundries, handling of ingots and slabs, ladle tilting and tapping, forging presses and hydraulics in power generation — actuation of valves and dampers, control around boilers and turbines, and gates and sluices at hydroelectric plants.

High force, resistance to heat and dust, long service life in continuous operation.

DP: Hot rolling mills, foundries, forging presses and ingot handling — ISO 6022 at 250 bar, the RM metal scraper against abrasion and the H seal (Viton) up to 150 °C.
TP: Foundries, steelworks and forging presses with synchronised movements — the heavy-duty envelope plus a magnetostrictive position sensor.
HD / HK: Very long strokes and the actuation of valves and dampers in power generation — the ISO 6020/2 counterflange design at 210 bar, geometric stability under load.

Typical deployments of this series Cylinders for presses and shearing machines → Cylinders for rolling mills and forming machines → Help choosing a cylinder →

CAD & documentation

Free 3D CAD models and 2D drawings

The model matches the series, bore, rod, mounting and stroke from the configurator — STEP, IGES, Parasolid, STL, DWG, DXF and PDF, free of charge.

How to get a 3D model or drawing of a DP / TP / HD / HK cylinder

Available formats

Frequently asked questions

Power generation and steelworks cylinder FAQ

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