Mebra Plastik Technical Tubing and Hoses

Mebra Plastik manufacturing technology and engineering quality standards

Mebra Plastik Italia S.p.A. based in Busto Arsizio has engineered high-precision thermoplastic technical tubing and hoses for more than fifty years.

Extrusion production lines integrate ultrasonic and laser cross-section dimensional monitoring in real time to secure strict outer and inner diameter tolerances. Manufactured items adhere to DIN 73378 and DIN 74324 vehicular standards as well as ISO fluid power automation guidelines.

High-grade virgin resin and precise thermal stabilization prevent hidden wall porosity and structural flaws.

Quality assurance protocols involve continuous mechanical testing on samples from each production run: tensile rupture assessment, elevated temperature burst pressure validation, hydrolysis resistance checks, and cyclic pressure pulsation durability.

Calibrated MB-LONGLIFE tubes ensure reliable hermetic sealing inside push-in pneumatic fittings and compression connectors without outer surface grooving. Advanced stabilization additives prevent polymer degradation from ultraviolet sunlight, ozone exposure, and plant lubricants.

Polymer materials science and chemical compatibility of technical tubing

The Mebra Plastik engineering range includes an extensive selection of engineering polymers designed for compressed air, technical gases, active chemicals, and lubricating fluids.

Polyamides PA 12 HIPHL and bio-based PA 11 Rilsan demonstrate low moisture absorption, retaining structural rigidity and dimensional stability in humid production plants. Polyurethanes with 98 Shore A hardness combine elasticity with high abrasion resistance down to -40 °C.

For ultra-pure fluid circuits, fluoropolymers PTFE, PVDF Kynar, PFA, and FEP resist harsh acidic and alkaline chemicals.

Selecting optimal tubing requires evaluating chemical compatibility between conveyed media and the inner wall, operational pressure, and ambient thermal levels.

Ester-based polyurethanes provide resistance to mineral oils and mechanical wear, whereas ether-based polyurethane formulations are chosen for humid environments exposed to hydrolysis.

Calibrated polyethylene tubes in PE-LD and PE-HD variants fulfill distribution needs for low-pressure air lines and food fluid transfers, offering physiological safety and economical deployment.

Diameter sizing, rated working pressures, and bend radius criteria

Pneumatic and fluid line engineering relies on safety margin ratios, temperature correction factors, and permissible bend curvature.

Nominal working pressures specified in technical datasheets assume standard +23 °C ambient temperature with a minimum 3 to 1 safety factor relative to burst thresholds.

When operational temperature rises, thermoplastic tensile strength diminishes, necessitating thermal derating factors: for PA 12 polyamide at +60 °C, permissible working pressure corresponds to approximately 55 percent of nominal rating.

Minimum bend radius defines the threshold where tubing curves without internal flow restriction or wall kinking.

The EXTRAFLEX 1190 polyurethane series offers a reduced bend radius down to three tube diameters, making it suitable for dynamic energy chains and automated tooling heads with compact clearances.

For long stationary conduits exceeding ten meters, semi-rigid PA 12 polyamide tubing maintains straight line routing along support trays without sagging between fixing clamps.

Assembly procedures, fitting integration, and line maintenance

Dependable performance of polymer fluid circuits begins with clean tube preparation prior to insertion into push-in fittings. Tube cutting must be performed using dedicated guillotine tube cutters with fresh blades perpendicular to the tube axis, preventing rough edges, burrs, or oval flattening.

Deformed cuts compromise internal O-ring sealing inside push-in connectors, causing pressure drops and compressed air leaks. Tubing must be inserted firmly past the internal gripper ring until reaching the bottom stop.

In dynamic automation mechanisms and pneumatic cylinders, tensile pulling or torsional twisting forces must be eliminated across moving travel paths.

For articulating machinery arms, technicians configure expansion loops or implement pre-formed SPU spiral coiled hoses fitted with 360-degree swivel fittings and strain-relief steel springs.

Periodic visual inspections identify surface friction wear against machine edges, preventing unplanned pneumatic line downtime.

Industrial application sectors for Mebra Plastik fluid conduit solutions

High-performance polymer tubing from Mebra Plastik serves vital sectors of global industry. In machine tool manufacturing, polyamide and polyurethane lines power pneumatic actuators, valve manifolds, and centralized pulse lubrication systems for linear slides and bearings.

In automotive and commercial transport, SABPA polyamide brake lines conforming to DIN 73378 link truck and trailer braking systems, withstanding road chemicals, mechanical vibration, and wide seasonal temperature shifts.

In chemical, pharmaceutical, and electronic semiconductor manufacturing, fluoropolymer tubing in PTFE and PVDF Kynar Flex provides clean fluid handling without plasticizer migration into ultra-pure water or chemical solvents.

On automated packaging lines and robotic pick-and-place arms, Multitube bundled assemblies consolidate pneumatic and sensor channels, preventing line snagging and accelerating machine assembly.

Quotation specifications, part identification, and delivery cooperation

Selecting Mebra Plastik tubing and spiral assemblies proceeds via factory part numbers, continuous laser jacket markings, or operational parameters.

Technical inquiries should specify outer and inner diameters, polymer resin (PA12, PU98, PTFE, PE), desired color coding, fluid media, pressure range, and required spool lengths.

For machine overhaul, our specialists identify tubing specifications from laser print photographs on installed lines, matching original Mebra Plastik products or approved technical equivalents.

International commercial terms, transparent quotations, and complete shipping documentation accompany each delivery. Shipments from logistic centers are handled through established freight carriers directly to client facilities with packaging protection preserving coil roundness and cleanliness.