Engineering Sector · PRECISE Range · EN 10305-2

High-precision steel tubing for gas springs, hydraulics and industrial actuation systems.

The alternative to seamless tube that cuts cost without sacrificing performance.

Fabricamos tubo de acero soldado de alta precisión con interior espejo para la industria de ingeniería: gas springs, cilindros hidráulicos, actuadores neumáticos y mecanismos de cierre. Prestaciones técnicas equivalentes al seamless, con coste de tubo soldado de precisión y plazos predecibles.

Outer Ø8 – 25 mm
BoreMirror · Ra ≤ 0.4
StandardEN 10305-2
Technical response24 h
PRECISE Range · Engineering Sector
Outer Ø8 – 25 mm
BoreMirror · Ra ≤ 0.4
StandardEN 10305-2
Savings vs seamlessUp to –80%
Response24 h technical
Request a sample →
Mirror bore
Ra ≤ 0.4 · Direct seamless alternative
Cost up to –80%
vs. seamless extruded tube
Predictable lead times
Tailored supply chain
Batch-certified
EN 10305-2 · ASTM A513 T5 · SAE J525

Seamless tube is still more expensive than it needs to be.

El tubo extrusionado sin soldadura lleva décadas siendo el estándar en ingeniería de precisión interior. Su argumento histórico: sin costuras interiores. Pero ese argumento tiene un coste oculto que muchos ingenieros y responsables de compras no han cuantificado. La gama PRECISE de Delmàs ofrece el mismo rendimiento técnico a un coste muy inferior — con previsibilidad en las entregas.

Without PRECISE range — with seamless tube

  • Cost 30% to 80% higher than the equivalent precision welded tube
  • Uncertain and unpredictable lead times in non-catalogue diameters
  • In diameters under 25 mm, availability is scarce and MOQs are high
  • In non-standard diameters: unavailable or with unworkable minimum quantities
  • The technical advantage of "seamless" is not necessary in low pressure
  • Real life-cycle cost is significantly higher than the purchase price
Seamless tube · high cost and unpredictable lead times in special diameters

With the Delmàs PRECISE range

  • Mirror bore technically equivalent to seamless (EN 10305-2)
  • Precision welded tube pricing: direct savings of 30% to 80%
  • Predictable availability and tailored supply chains
  • Diameters 8–25 mm, including non-standard sizes on request
  • Already replaces seamless in gas springs, hydraulics and mechanical engineering
  • Savings accumulate: order by order, month by month
PRECISE range · mirror bore · direct seamless alternative at lower cost

We manufacture for every subsector where the tube bore is the determining factor.

Industrial gas springs · PRECISE mirror bore
Hydraulic cylinders · direct seamless replacement

Low-pressure hydraulics and gas springs are the two applications where seamless tube replacement is most direct and the savings most quantifiable. The tube bore is the piston's working surface: it must be perfect.

Industrial and furniture gas springs
Furniture gas dampers · Lid and door lift gas springs · Industrial equipment gas cylinders · Automotive gas struts
Low-pressure hydraulics
Small hydraulic cylinders · Pressure actuators · Precision hydraulic jacks · Industrial fluid circuits
PRECISE · Mirror bore · EN 10305-2 · ASTM A513 T5/T6 · JIS G3445 · Direct seamless alternative

Precision steel tubing applications in industrial engineering.

The technical problem
The cylinder body needs a perfect bore for piston sliding. Any roughness destroys the seals, causes leaks and reduces mechanism service life. Seamless tube has been the standard — but it is 40–80% more expensive.
The Delmàs solution
PRECISE range with smooth bright bore (EN 10305-2). Technically equivalent to seamless at a fraction of the cost. Immediate availability in 8–25 mm diameters, including special sizes on request.

Furniture and automotive gas springs · Precision pneumatic cylinders · Industrial dampers · SAB Industries

PRECISE range · mirror bore · gas springs and precision cylinders
The technical problem
Closure mechanisms require a precise dimensional fit between the rotating element and its housing. An uncontrolled weld bead prevents that fit or degrades it with use.
The Delmàs solution
OPTIM range: simultaneous OD + ID control with bead ≤ 0.15 mm. The mechanism works correctly from the first cycle and maintains its precision throughout its service life.

Panic-safe security doors · Industrial shutters (Novoferm) · Lock cylinders · Perimeter fencing

OPTIM range · OD+ID control · closure and security mechanisms
The technical problem
Precision pneumatic actuators require the same inner quality level as gas springs: the piston slides on the tube bore and any irregularity causes friction, noise and premature failure.
The Delmàs solution
PRECISE range for pneumatic cylinder bodies. OPTIM range for guides and mechanisms where outer control is also critical. Delivery capability as finished part with tapered ends.

Industrial pneumatic cylinders · Precision actuators · Industrial machinery components · Metallurgical equipment

PRECISE + OPTIM range · pneumatic actuators and precision guides

Which range for each of engineering?

OPTIM range · OD+ID control · mechanisms and closures
OPTIM Range

Mechanisms and closures

For mechanisms, guides and closures.

  • Simultaneous OD + ID control
  • Inner bead ≤ 0.15 mm
  • EN 10305-3/2 · Ø 3–10 mm
  • Panic doors and shutters
  • High inner-precision guides
OPTIM technical consultation
PREMIUM range · electrical conduit and outer surface finish
PREMIUM range

Conduit and outer surface finish

For electrical conduit and outer surface finish.

  • Bright outer surface
  • Ø 3–13 mm · EN 10305-3
  • Direct chrome and zinc plating
  • Cable conduit
  • Electrical cabinets and supports
PREMIUM technical consultation
Request a sample · Comparative study vs. seamless

Send us your specification. We will prepare a comparative study PRECISE vs. seamless with estimated savings.

No obligation. The PRECISE tube in your hands, ready to validate on your production line. Technical response within 24 hours.

  • Technical response within 24 hours
  • Comparative study PRECISE vs. seamless
  • Physical sample to your exact specification
SectorEngineering · Gas Springs · Hydraulics
Main rangePRECISE · EN 10305-2
Diameter8 — 25 mm
BoreMirror · Ra ≤ 0.4
StandardEN 10305-2 · ASTM A513 · SAE J525
Response24 h technical
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