Constructive in constructions
More than 100 years as a specialist in high-quality metal constructions. From individual parts to fully welded assemblies — traditional craftsmanship with modern technology.
- 10 t
- max. piece weight
- 8 m
- max. build height
- 5 × 5 t
- overhead cranes
Specialist in structural work
- Stainless steel 304 / 316
- Aluminium
- Brass
- Steel
- Machine building (frames, guards)
- Equipment manufacturing
- Infrastructure engineering
- Food industry
- Electrical engineering
- Mechatronics
A welded construction is more than the sum of its parts. The biggest risks lie in distortion caused by heat input and in dimensional deviations that accumulate through an assembly. That is why we determine the welding sequence during production engineering and not on the shop floor: welding symmetrically where possible, in stages where necessary, and with fixturing on the dimensions that really matter.
We cut sheet on the fibre laser and tube and profile on the Trumpf TruLaser Tube 3000. The latter saves a great deal of manual work in a construction: cut-outs, mitres and mating shapes come straight off the machine, so parts fit together instead of having to be made to fit. The result is a shorter welding time and a more accurate whole.
Material choice is a trade-off between load, environment and cost. Steel is strong and economical, but needs a coating. Stainless steel 304 and 316 are corrosion-resistant and suited to wet or hygienic environments — you can read more on our page about stainless steel constructions. Aluminium is light, but calls for a different welding approach and for attention to the strength around the weld.
From drawing to delivery
Engineering & production engineering
Assessment of the drawing, welding sequence and manufacturability.
Cutting & preparation
Laser cutting of sheet and tube, bending and fitting.
Welding & assembly
Manual and laser welding through to the complete assembly.
Surface treatment
Shot blasting, powder coating, anodising or passivation.
Inspection & delivery
Dimensional inspection and visual inspection, followed by just-in-time delivery.
Specifications
Indicative values — to be confirmed per project- Max. weight per piece
- up to 10 tonnes
- Max. height of construction
- 8 m
- Lifting equipment
- 5 overhead cranes of 5 tonnes; tandem lifting up to 10 tonnes
- Sheet cutting
- fibre laser
- Tube and profile
- Trumpf TruLaser Tube 3000 — cut-outs, mitres and mating shapes straight off the machine
- Welding
- under ISO 3834-2, the standard for quality requirements in fusion welding
- Load-bearing structures
- EN 1090-1; steel and aluminium structures CE-compliant
- In practice
- qualified welders, documented welding procedures and traceable material
- Surface treatment
- blasting, powder coating, anodising and stainless passivation — much of it in house
- Sectors
- machine building, equipment manufacturing and infrastructure
What to send us
Request a quote- A PDF drawing and a 3D STEP file of the assembly
- Material and the required grade
- The dimensional requirements
- The required finishing
- Not sure which surface treatment fits? That choice partly determines how the structure has to be welded and supported — we are glad to think along
Frequently asked questions
How heavy and how tall may a construction be?
We handle parts up to 10 tonnes unit weight and constructions up to 8 metres in height. Five overhead cranes of 5 tonnes are installed in the hall; by lifting in tandem — two cranes on one load — we move assemblies of up to 10 tonnes.
Do you work in accordance with EN 1090?
Yes. We are certified to EN 1090-1, the standard for the execution of steel and aluminium structures with CE marking. For the welding itself we work under ISO 3834-2, and our quality system is certified to ISO 9001.
Do you also take care of the surface treatment?
Yes. Blasting, powder coating, anodising and the passivation of stainless steel are part of the process, much of it in house. That gives you a single point of contact from production engineering through to the finished construction, without having to move the work between suppliers yourself.
In which materials do you weld constructions?
Steel, stainless steel 304 and 316, aluminium and brass. Which material suits best depends on the load, the environment and the required finish; stainless steel is the obvious choice for wet or hygienic environments, aluminium for weight-sensitive structures.
Can you work from a sketch as well?
Yes. We then first assess manufacturability and record the starting points — material, profile selection, welding sequence and dimensions — before production begins. That avoids changes after the fact, which are expensive in a welded construction.
Discuss your drawing,
part or assembly.
Response within one working day · 074-2912235 · info@assinkschipholt.nl