01
Material intake
Plate and sections arrive with EN 10204 3.1 inspection certificates, issued per heat and filed against the order.
Cut, machined, welded and painted under one roof.
Milling, turning, plasma and gas cutting, bending, rolling, welding, assembly, painting and quality assurance happen in our own factory.
Production floor: 3,000 m². 50,000+ attachments delivered.
The work in our own factory
Nine processes in our own factory, shown below in seven steps. A partner blasts the steel before we paint it.
02
Plasma cutting
Profiles are cut in house to repeatable tolerances, so the parts fit up before welding.
Cut on an Eckert CNC plasma and gas cutting table with 3D bevel cutting.
03
Milling and turning
Bushings, pin bores and coupler interfaces are machined here, so the pin centres match the drawing.
Milled on a Starrag Heckert 4-axis CNC horizontal machining centre and turned on a Mazak 4-axis CNC turning centre.
04
Welding
MAG 135 and TIG 141, to procedures qualified by WPQR, by welders qualified to EN ISO 9606-1.
05
Assembly and fit-up
Subassemblies are dry-fitted and measured before final welding locks the geometry in.
Plate is bent on Ermaksan and Amada CNC press brakes and rolled on an MG four-roll plate rolling machine. Overhead cranes move the parts.
06
Painting
A partner blasts the steel. We paint it in our own factory.
Painted in two electrostatic painting and drying cabins.
07
Inspection
Visual and penetrant testing by personnel certified to EN ISO 9712, on the joints the drawing calls for, with dimensional checks on the mounting interface.
From plate to pallet
Photographs from our own workshop.
Welded coupler frames with their pins fitted, stacked on a pallet.
Painted couplers strapped to a pallet, with plate stock behind.
A bucket shell with its internal ribs, before painting.
A painted two-tine attachment strapped to its pallet.
Unpainted ripper bodies standing upright on pallets.
Welded grab halves stacked on a pallet.
Fitting a pin into a machined coupler body.
A cylinder and its hoses being fitted inside a weldment.
A coupler assembly on the drilled welding table.
Assembly work at the bench, with the parts bins behind.
Hand-fitting the last parts on the welding table.
A painted assembly with its hydraulics fitted.
A finished coupler on the shop floor.
Identical coupler frames stacked from a production run.
A bucket with bolt-on teeth and side cutters.
Fresh paint on a bucket edge.
The welded mounting lugs on the back of a painted bucket.
Finished buckets on pallets, loaded in the trailer.
A forklift carrying a palletised bucket out of the factory.
Moving a toothed bucket on its pallet through the hall.
A coupler strapped to its pallet, ready to ship.
Welding Hardox® plate
Hardox® is quenched-and-tempered plate. Poorly controlled heat input, preheat and interpass temperature increase the risk of excessive softening in the heat-affected zone and of hydrogen-assisted cold cracking at the joint that carries the load.
The EN ISO 3834-2 certificate covers comprehensive welding quality requirements. The EN 1090-1 certificate covers factory production control for structural steel components in execution classes EXC1 and EXC2.
Qualified processes: MAG 135 · TIG 141
What is certified, and by whom
Certified welding quality
EN ISO 3834-2
EN ISO 3834-2 is the comprehensive level of quality requirements for fusion welding. It covers how welding is planned, carried out, inspected and recorded.
- Covers
- Fusion welding at our factory under EN ISO 3834-2: how welds are planned, made, inspected and recorded.
- Does not cover
- It certifies how we weld. It is not a product certificate and does not rate an attachment for a particular machine.
Certificate: CSW/1293/2025 · UDT-CERT
Factory production control
EN 1090-1 EXC1 + EXC2
Factory production control for structural steel components under EN 1090-1, execution classes EXC1 and EXC2, certified by notified body 1433.
- Covers
- Factory production control for structural steel components in execution classes EXC1 and EXC2.
- Does not cover
- Execution classes EXC3 and EXC4 are not covered.
Certificate: 1433-CPR-0257 · UDT-CERT: notified body 1433
Qualified welders and procedures
EN ISO 9606-1 · WPQR EN ISO 15614
Welders qualified to EN ISO 9606-1, and welding procedures qualified by WPQR to EN ISO 15614. The qualified processes are MAG 135 and TIG 141.
- Covers
- Our welders and welding procedures for the processes MAG 135 and TIG 141.
- Does not cover
- Other welding processes are not qualified.
Non-destructive testing
EN ISO 9712: VT + PT level 2
Visual and penetrant testing by personnel certified to EN ISO 9712 at level 2. Applied to the joints the drawing calls for, not to every weld.
- Covers
- Visual (VT) and penetrant (PT) testing by personnel certified to EN ISO 9712 at level 2.
- Does not cover
- Ultrasonic and radiographic testing are not included. Only the joints the drawing or inspection plan names are tested.
Material traceability
EN 10204 3.1
EN 10204 3.1 inspection certificates, issued per heat of steel and kept with the order.
- Covers
- The steel itself: one EN 10204 3.1 inspection certificate per heat, linked to the order and serial number.
- Does not cover
- It documents the material, not the welds or the finished attachment.
CE marking
CE: 2006/42/EC
Declaration of Conformity under the Machinery Directive 2006/42/EC for every quick coupler and hydraulic attachment we make. Signed by Hydro-Instal as the manufacturer.
- Covers
- Quick couplers and hydraulic attachments: the CE mark and an EU declaration of conformity under Machinery Directive 2006/42/EC.
- Does not cover
- Buckets and other attachments without hydraulics are not part of this statement.
Transition to Regulation (EU) 2023/1230 underway. Applicable from 20 January 2027.
What we make
Our product lines
- Buckets
- Quick couplers
- Tools
- Grapples
Catalogue attachments for excavators up to 65 t.
Larger attachments, up to 8 t for excavators up to 80 t, are custom engineered to order.
How we check it
- Welding under our EN ISO 3834-2 certified quality system.
- A record for every serial number, so the spare parts match your attachment.
- Engineered-to-order builds pass a factory acceptance test before dispatch: dimensions, welds and fit.
Every offer names the dispatch week.
Need a price for your machine?
Tell us the machine and the attachment you need. We usually reply within 1 working day.