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Go with the flow forming.

PIPE, OIL & GAS

Flowforming that channels precision into target wall thickness and maximum material efficiency.

Pipe manufacturers producing systems for fluid transport and conveyance that must withstand extreme environmental conditions use special corrosion-resistant steels. To achieve the required thicknesses, manufacturers can start with preforms, reducing material loss by using our range of flow forming machinery.

At DENN, we understand your needs and we have the solutions.

JUMBO CYLINDERS

CNG BOTTLES

PETROCHEMICAL INDUSTRY

FIRE-EXTINGUISHERS

JUMBO CYLINDERS

After many years of building necking-in machines, it’s not a coincidence that DENN has built the largest in the world, up to 720 mm diameter and 40 mm thickness ST-37. Such experience in the field has allowed DENN to be one of the leaders worldwide in this field. Robustness and repeatability are two key factors in these reliable machines.

MACHINES

CNG BOTTLES

As a leader in the hot forming processes, DENN offers a complete series of CTA machines, whose application covers the manufacture of a wide range of products related to CNG bottles and liners as well as pressure cylinders mainly aimed to contain and transport compressed natural gas. In this regard, our machines can work metal pipes with diameters up to 720 mm.

MACHINES

PETROCHEMICAL INDUSTRY

Tubes in this industry, with a variety of materials in superalloys such as Inconels, Duplex F55 and similar are used for superheated steam and exhaust generator steam applications, including in power plants. The standard manufacturing process is to machine the parts starting with pieces up to 90 mm thick and reduce them by the milling process, down to 20-35 mm. With our very heavy-duty flow forming machines, there is no need to machine the parts, thereby achieving significant cost savings in the manufacturing process.

Another field to consider is the thermal power plants. When it comes to turbines, diameters of tubes go up to 800 mm and 35 mm thick, with materials such as ASTM F91, A182 series, F92 or F22.

The largest flow-forming machine in the world, up to 1800 mm in diameter, has also been built by DENN. A very close relationship and trust with our customers allows us to be one of the main suppliers of state-of-the-art flow forming machines in the world.

2, 3, 4 and even 6-roller flow forming lathes are available at DENN. Just let us know your needs and requirements, and we will be glad to work with you. Machines up to 65 mm in wall thickness are available.

MACHINES

RL-70/340

RL-80/340

RL-60/150

FIRE-EXTINGUISHERS

High-productivity, reliable and versatile machines for manufacturing fire extinguishers. DENN builds these machines for such applications with the option to load and unload the pieces by using a robot and installation of induction units in order to optimise the process and increase productivity.

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