Components and semi-fabrication

Do you need plates cut precisely to size and with prepared weld-edges for your project? Let us do it for you.

We use a numerically controlled plate-edge milling machine that reliably generates edges free of overhardening for ultra-precise machining of your plates. We therefore deliver to you plates completely ready for use and with their weld edges ready prepared in accordance with your wishes. Not only right-angled external contours, but also trapezoidal and arc-shaped cuts are possible. Your plates can also be bent precisely to the specified radius prior to delivery, or blast descaled and protectively treated for immediate use on your site.

Thickness range: 5 to 160 mm
Length: ≤ 25,000 mm
Width: ≤ 5,000 mm

Whether large-format components for foundation plates, press foundation frames, flange rings, racks for drilling platforms or tube plates for pressure-vessels and boilers – we can supply the correctly fitting cut-to-size plate.

We cut your plates precisely to accord with your design drawings using numerically controlled coordinate cutting machines, and with prepared weld edges, if required.

Straightening on hydraulic presses makes it possible to achieve flatness specifications better than those stated in the standards for the grade of steel. Stress-relieving annealing and machining of the components is also possible.

Working range up to 10,000 mm x 40,000 mm
Thicknesses up to 410 mm

If longitudinally welded shell courses are among the essential components for your pressure vessels, boilers, machines or other steel fabrications, we are the right partner for you!

We use a high-performance four-roll plate bending machine with a forming force of 8,600 t and a cylindrical length of 4300 mm for forming of shell plates.

This machine is equipped with three interchangeable rolls, of diameters 880 mm, 1,200 mm and 1,500 mm, and was conceived specifically for cold forming of heavy plates consisting of high-strength steels with a yield strength of above 500 MPa, as an alternative to forged shell courses.

Hot forming can also be performed, depending on component dimensions and the particular material, with subsequent heat treatment, including water-quenching and tempering, where required. The submerged-arc process with up to three electrodes is used for welding.

We offer approvals in accordance with both German and international codes of practice; our Heavy Fabrication division is, inter alia, a stamp holder in accordance with ASME I, VIII-1 and VIII-2.

Shell courses can also be supplied tack welded.

Thickness: up to 250 mm (greater thicknesses possible on agreement)
Outer diameter: up to 7,600 mm
Section lengths up to 4,300 mm
Item weights up to 70 t

In addition to welded shell courses, we also supply shell sections with no longitudinal weld. These products are also formed to meet your needs on our four-roll plate bending machine and can also be delivered with weld edges ready prepared (flame-cut and milled for circular welding).

We can also supply welded components to meet your needs, in accordance with EN 1090, or other standards and codes, for example. Dillinger's Heavy Fabrication division is qualified for the performance of welding work under a large range of codes and standards. The division's equipment and technical capabilities permit the fabrication of welded components up to individual weights of 70 tonnes. One typical application for such welded components are iron and steel plant equipment, including steel-teeming ladles, scrap chutes, and similar items.

Special parts can be supplied using the Heavy Fabrication division's potentials and also those of other Dillinger sectors. Examples include turned edges on rotationally symmetrical parts, and three-dimensional flame cutting using a cutting robot. Other machining operations such as milling and drilling, for example, may also be possible with the involvement of Dillinger's partner companies.

Welding processes: manual arc, MAG, submerged arc
Turning machine: unobstructed vertical clearance 2,550 mm, diameter 6,100 mm

A special Dillinger service is the straightening, on agreement, of your structural parts should this be necessary.

Heat treatment operations can also be performed to your specifications in our range of heat-treatment furnaces. These also permit water quenching, followed by tempering, and stress-relieving annealing.

Bogie hearth furnace:
4,300 mm x 3,600 mm x 10,000 mm

Walking-beam furnaces:
5,500 mm x 1,800 mm x 8,250 mm
6,000 mm x 2,300 mm x 12,500 mm

Bell-type annealing furnace:
8,000 mm x 5,000 mm x 4,600 mm