Punched, Formed &
Deep Drawn Parts.

Progressive die stamping is a metal forming process where a continuous strip of sheet metal is fed through a series of stamping stations, each performing a different operation — punching, bending, forming, or drawing. Each stroke of the press advances the material to the next stage, producing a finished or near-finished part at the end of the tool. It is the most efficient method for high-volume production of complex stamped parts, producing parts quickly with minimal material waste and consistent quality.

Stamping (or punching/blanking) shears flat sheet material into a 2D profile using a punch and die. Forming uses bends to create a 3-dimensional shape of uniform thickness. Deep drawing stretches the metal sheet into a deeper 3D form — typically a cup, shell, or housing — by pulling it into a die cavity. All three processes can be combined in a single multi-stage progression tool to produce complex parts in one continuous operation.

Donlouco stamps carbon steel, stainless steel, aluminium, and copper alloys across a range of thicknesses from 0.5mm to 10mm. All raw materials are sourced from approved suppliers with full traceability from the steel mill through to the finished part, including material certification on every order.

Yes. Donlouco specialises in producing parts using custom tooling tailored to customer-specific requirements. We can produce tooling from single die sets to complex multi-stage progression tool sets. Our engineers can work from customer drawings, 3D models, or physical samples — including reverse engineering where no drawings are available. Tools include drawing and forming operations to maximise flexibility for intricate part design.

Donlouco offers zinc plating to EN ISO 2081 and ASTM B633 standards, as well as other standards specific to customer requirements. Standard dipping is used for general parts; spin dipping is used for threaded items to ensure clean threads. Additional secondary processes include heat treating, painting, deburring, passivation, electropolishing, sterilisation, and laser welding. All plating is measured and checked by batch.

Every shipment is accompanied by full traceability records covering dimensional inspection results and, where applicable, performance test data. Raw material mill certificates are included as standard. Donlouco is ISO 9001 certified and EN 1090 approved for CE stamping of parts. Quality checks are performed routinely throughout the manufacturing process, not only at final inspection.

Yes — particularly for medium and high-volume production. Progressive die stamping combines speed, material efficiency, and repeatability to deliver a lower cost per part than most alternative manufacturing methods. While tooling investment is required upfront, the cost is recovered quickly across a production run. Hard tooling produces consistently high-quality parts with minimal die wear, making stamping one of the most economical processes available for volume production of precision sheet metal parts.