Precision tubing for agricultural machinery: low-pressure hydraulics, structure and spare parts
The technical challenge of agricultural machinery
The environment punishes relentlessly
The tractor, the harvester and the implement work outdoors, in dust and mud, under sun and rain, with continuous vibration. The tubular component has to withstand that environment and, when it is on show, look right despite everything.
The machine lasts decades
Unlike a passenger car, agricultural machinery has an extremely long service life. That means two things: that the original component has to withstand a great deal, and that there is a huge market for spare parts for machines still working years after they stop being manufactured.
The design is not always in the catalogue
The exact size a machine calls for —or the spare part for an old model— rarely matches the standard tubing on the market. The standard manufacturer only offers nominal sizes; the real design needs the real size.
Applications where you will find us
Low-pressure hydraulic circuits
- Alternative to seamless tubing The PRECISE range offers a mirror-finish bore to EN 10305-2 that meets the requirements of a low-pressure circuit, at 40% to 80% lower cost than seamless.
- Clean bore for the fluid No roughness or beads to disturb the passage of the oil or trap particles.
- Diameter and wall thickness made to measure, adjusted to the flow rate of each circuit.
Structural components
- Windscreen and cab structure The tubular frame that surrounds the windscreen and structures the cab is a reference application: small-diameter structural tubing, bent, with a surface suitable for finishing.
- Surface ready for finishing The PREMIUM range provides the bright outer surface for direct chrome, zinc plating or painting, which withstands the agricultural environment.
- Thin walls with strength, with the formability to bend the subframe without cracking or ovalisation.
Spare parts
- The size that is no longer manufactured When a machine needs a tubular component of a size the standard market no longer offers, we manufacture it from the drawing or the original part, to a hundredth of a millimetre.
- Small and medium batches We manufacture the quantities the large steelmakers turn down for lack of volume: exactly what spare parts demand.
- From tubing to finished part When the customer needs it, we deliver the spare part already cut, bent and with the finish resolved, ready to assemble.
The right range for Agricultural
PRECISELow-pressure hydraulic circuits and oil conduction. Mirror bore. An alternative to seamless at 40% to 80% lower cost
PREMIUMExposed structural components: windscreen, cab, guards, supports. Bright outer surface for electroplating or direct painting
OPTIMMechanisms, shafts and guides that demand precision in bore and outer diameter. Weld bead ≤ 0.15 mm
Supply and service
- Made-to-measure manufacturing in small batchesWe manufacture the exact quantities and sizes the large steelmakers turn down for lack of volume: it is what both the machine manufacturer and the aftermarket need.
- Homologation and traceability with every deliveryCertificate EN 10204-2.2 (declaration of conformity with non-specific inspection results) or EN 10204-3.1 (inspection certificate with specific results for the batch supplied), depending on what the customer's quality system requires. In-house laboratory at the plant.
- Tubing transformed into a component ready to assembleWhen the customer needs it, we deliver the finished part —cut, bent, punched, end formed, machined— ready to assemble.
Why agricultural machinery manufacturers trust Delmàs
A family-owned business in La Roca del Vallès, specialising exclusively in small-diameter welded and calibrated steel tubing (⌀ 3–25 mm).
The exact diameter the machine or the spare part calls for, to a hundredth of a millimetre, even when it does not exist in any catalogue.
We manufacture the quantities the big players turn down for lack of volume: the essence of the agricultural aftermarket.
Manufacturing powered 100% by renewable energy since 2006, with two photovoltaic self-consumption installations at the plant.
Questions we hear every week
Can you manufacture a spare part in a size that no longer exists on the market?
Yes, it is one of our specialities. From the drawing or the original part we reproduce the tubing at the exact size, to a hundredth of a millimetre, and in whatever batch you need, however small.
Do you manufacture tubing for high-pressure hydraulic circuits?
Our focus is on low-pressure circuits (oil conduction, cooling, auxiliary circuits), where the PRECISE range replaces seamless tubing at lower cost. For the main high-pressure hydraulics of implements, tell us the application and we will assess whether it fits our range.
Do you manufacture the tubular windscreen frame of a tractor?
Yes. It is a small-diameter structural application that fits squarely within our range, with a surface suitable for the finish that withstands the agricultural environment.
Do you work with small batches?
Yes. We manufacture the small and medium quantities the large steelmakers turn down for lack of volume: it is exactly what the aftermarket demands.
Does the tubing arrive ready for painting or chrome plating?
Yes. The PREMIUM range is manufactured with a bright, non-porous outer surface, suitable for direct painting, chrome or zinc plating, with no prior polishing stage.
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Tell us about your application and we'll get back to you in 24 h
We have been manufacturers since 1956. Tell us what you need and our technical team will review your case, with no obligation and no minimum order quantity.
- Technical response in 24 h
- Physical sample to your exact specification
- Cost comparison vs. your current supplier
Prefer to discuss it over the phone? +34 938 424 707