Altimexor Metal
Altimexor Metal
Direct mill-to-factory delivery for Coimbra’s industrial centers, compliant with EN, ASTM, and DIN standards.
High-corrosion barrier sheeting engineered for industrial facilities across the Centro region of Portugal.
Heavy-duty structural load-bearing sections tailored for industrial warehouse construction in Coimbra.
European standard structural profiles optimized for high tensile resistance and civil infrastructure projects.
High-yield cold-formed channel sections designed for specialized retaining wall assemblies and framing.
Hexagonal steel bars (hex bars) serve as fundamental feedstocks across high-precision manufacturing sectors. Renowned for their geometric symmetry, tight dimensional tolerances, and exceptional machinability, hex bars eliminate the need for extensive initial milling when producing hexagonal components such as high-tensile fasteners, hydraulic hose fittings, pneumatic valve blocks, and power transmission shafts.
As the municipality of Coimbra, Portugal continues its evolution into a hub for tech-driven manufacturing, university-led innovation spin-offs, and advanced sub-contract mechanical engineering, the local demand for specialized metallurgical feedstocks has escalated. Dongguan Altimexor Metal Co., Ltd. supplies high-grade cold-drawn and hot-rolled hexagonal steel bars tailored specifically to the rigorous standards demanded by Coimbra's mechanical engineers and global export compliance mandates.
Our cold-drawing processes yield hexagonal profiles with extremely tight across-flats (AF) tolerances, reducing spindle vibration and tool wear in high-speed CNC Swiss-type lathes.
Availability of free-cutting carbon steel grades (e.g., 11SMn30, 12L14) and stainless variants (304Cu, 316L) optimized for minimal chip curling and superior surface finishes.
Every shipment to Coimbra is accompanied by EN 10204 3.1 Mill Test Certificates, detailing heat numbers, chemical composition analysis, and mechanical tensile testing results.
Located in the heart of Portugal’s Centro Region, Coimbra acts as a vital bridge between the northern manufacturing belts of Porto and the southern industrial logistics hubs of Lisbon. Traditionally celebrated for its prestigious university and medical research clusters, Coimbra has systematically developed robust capabilities in:
To support Coimbra’s industrial growth, Dongguan Altimexor Metal Co., Ltd. implements stringent quality assurance protocols, ensuring our hexagonal steel bars comply with European Carbon Border Adjustment Mechanism (CBAM) regulations, REACH environmental standards, and ISO 9001 quality management systems.
Comprehensive overview of hexagonal steel bar grades, sizes, and mechanical tolerances available for dispatch to Coimbra distributors and machine shops.
| Steel Grade Category | Standard / Equivalent | Across Flats (AF) Range | Yield Strength ($R_p0.2$, MPa) | Key Machining / Industrial Applications in Coimbra |
|---|---|---|---|---|
| Free-Cutting Carbon Steel | EN 10277-3 (11SMn30 / 11SMnPb30) ASTM A108 (1215 / 12L14) |
4 mm – 85 mm | $\ge 340 - 440$ | High-speed automated CNC turning of nuts, hydraulic fittings, and threaded connectors. |
| Low Carbon Structural Steel | EN 10025-2 (S235JR / S355J2) ASTM A36 / Structural |
6 mm – 100 mm | $\ge 235 - 355$ | General mechanical engineering, structural framework tie-rods, weldable machine bases. |
| Medium Carbon & Alloy Steel | EN 10083-2 (C45E / 42CrMo4) AISI 1045 / AISI 4140 |
8 mm – 90 mm | $\ge 590 - 750$ | High-stress gears, power transmission shafts, heavy-duty socket fasteners, and drive shafts. |
| Austenitic Stainless Steel | EN 10088-3 (1.4301 / 1.4404) AISI 304 / 316L |
3 mm – 75 mm | $\ge 200 - 290$ | Medical instruments, food processing equipment in Coimbra, chemical fluid handling valves. |
| Martensitic Stainless Steel | EN 10088-3 (1.4021 / 1.4057) AISI 420 / 431 |
5 mm – 65 mm | $\ge 600 - 800$ | High-hardness valve stems, pump shafts, wear-resistant mechanical components operating under friction. |
To achieve exceptional straightness, exact hexagonal geometry, and crack-free core structure, our production process adheres to a multi-stage quality control workflow:
Steel billets undergo precise thermal rolling followed by automated hydraulic high-pressure water descaling to eliminate surface scale oxidation.
Precision drawing through tungsten carbide dies imparts exact hexagonal dimensions, elevating yield strength and strain-hardening surface grain boundaries.
100% continuous ultrasonic and eddy-current non-destructive testing detects sub-surface inclusions, internal voids, or micro-cracks before shipment.
Streamlined export logistics connecting Asian manufacturing hubs directly to the Port of Leixões, Port of Figueira da Foz, and Coimbra inland container depots.
We provide cut-to-length services, special alloy melting, and custom chamfered ends for high-volume automated bar feeders.
Dongguan Altimexor Metal Co., Ltd. is a steel company integrating production, supply, sales and export. Our products cover stainless steel plate, stainless steel plate, stainless steel coil, stainless steel strip, stainless steel rod, stainless steel pipe, GI, GL, PPGI, PPGL, corrugated roof panel, aluminum plate/coil, etc., which can be customized according to customer requirements.
We put customer satisfaction in the first place and strictly follow customer requirements for production. With good reputation, strong strength and competitive prices, we will serve our customers. We promise to provide the right products at the right time. The products are exported to Southeast Asia, the Middle East, North America, South America, Europe, Africa, Australia and other regions, forming a global marketing network.
Since its establishment, the company has always implemented the policy of "credibility first, advanced service, commitment, and customer first", adhered to the corporate philosophy of "integrity management, mutual benefit, and common development", and adhered to the corporate philosophy of "high quality, reasonable price, and perfect service". The aim is to serve global customers wholeheartedly. Looking forward to your consultation, thank you.
Contact Our Metallurgical Engineers
Addressing key procurement, engineering, and logistics questions for buyers serving the Coimbra region.
Standard stock items (such as standard size 11SMn30 or 304 stainless hex bars) are dispatched within 3–7 days. Custom alloy melting or tailored dimension cold-drawing typically requires 20–30 days lead time, with ocean transit directly to Port of Leixões or Lisbon followed by inland trucking to Coimbra.
Cold-drawn hexagonal bars offer superior dimensional accuracy (ISO h9/h10 tolerance), sharper corners, a bright scale-free surface finish ($Ra < 1.6 \mu m$), and higher tensile yield strength due to strain hardening. Hot-rolled hex bars are better suited for heavy structural components requiring subsequent forge molding or thermal treatment.
Yes. All steel profiles delivered by Dongguan Altimexor Metal Co., Ltd. comply with EU REACH and RoHS environmental standards. We also provide full embedded carbon accounting documentation necessary for EU CBAM declaration compliance.
Hexagonal bars are strapped tightly into hexagonal bundles wrapped in anti-rust VCI film, encased in heavy-duty plastic woven sheeting, and secured with steel strapping and protective corner guards to guarantee zero sea spray corrosion or physical bending during transit.
Complementary steel plate and profile feedstocks engineered for machine building and structural construction in Portugal.
Explore our full suite of color-coated, stainless, alloy tool, and heavy structural section steel products.
Connect directly with Dongguan Altimexor Metal Co., Ltd. for factory pricing, mill test certificates, and express freight delivery schedules to your facility.
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