The lids and bottoms are made by cold forming at PATENT. We undertake the production of various types of dished ends not only with raw materials, but also without raw materials, if the Customer wants to provide them for us.
Material grades:

At PATENT, we use the following material grades to produce lids and bottoms:

– austenitic and duplex stainless steels (1.4301 / 304; 1.4404 / 316L, 1.4462, LDX2101, etc.)

Torispherical heads

Semi-elliptical heads

Curved discs or dished heads

Elliptical bottoms

Flat dished ends


Inverted heads

Spherical dished ends

It is the customer’s responsibility to determine the wall thicknesses by strength calculation and to select the material quality. If required, we can provide wall thickness calculations for our Customers, if the data provision is sufficient.

Contact us, ask for a quote!

We are pleased to be able to manufacture lids and bottoms for you according to your technical specifications. We stay at your disposal to be able to discuss the specifications of your products.

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