Enterprise Procurement & Systems Engineering
At Pak Alumex Aluminium Industries, operating from our central facility on 5km Painsra Road, Gojra, Faisalabad, we unify raw billet heating, multi-ram extrusion presses, chemical pre-treatment, anodizing tanks, and electrostatic powder coating under a single quality management protocol.
When structural engineers and facade consultants specify architectural aluminium extrusion profiles, section integrity depends on alloy composition, heat treatment precision, and die land design. Pak Alumex extrudes primary-grade AA6063 billets to satisfy severe wind loads, thermal stress, and sharp architectural sightlines.
Architectural facades rely predominantly on 6063 aluminium alloy due to its superior extrudability, exceptional surface finish quality, and excellent resistance to atmospheric corrosion. We supply profiles in two primary temper states:
Extrusion defects such as wave edges, twisting, and internal seam line weakness occur when profile wall thickness varies dramatically across hollow chambers. Our engineering team evaluates drawing geometries against strict extrusion ratios (RAM area vs section cross-section area) prior to matrix tooling:
| Alloy & Temper | Tensile Strength (Rm) | Yield Strength (Rp0.2) | Elongation (A5) | Brinell Hardness | Primary Architectural Application |
|---|---|---|---|---|---|
| 6063-T5 | ≥ 150 MPa | ≥ 110 MPa | ≥ 8% | ≥ 60 HB | Standard residential sash profiles, sliding window tracks, internal glazed partitions. |
| 6063-T6 | ≥ 205 MPa | ≥ 170 MPa | ≥ 8% | ≥ 75 HB | Commercial curtain wall structural mullions, transoms, heavy bi-fold door stile profiles. |
| 6061-T6 | ≥ 290 MPa | ≥ 240 MPa | ≥ 10% | ≥ 95 HB | Structural space frames, point-supported spider glazing structural backup trusses. |
Comprehensive architectural extrusions engineered with integrated drainage channels, EPDM gasket grooves, thermal barrier crimp slots, and hardware pockets for immediate fabrication.
Factory-assembled and pre-glazed cassette profiles with split-mullion interlocking geometry. Designed to absorb floor-to-floor structural live load deflections and seismic shear.
Field-assembled stick mullions and transoms accommodating 24mm to 32mm insulated glass units. Features PA66-GF25 thermal strips to eliminate thermal bridging in commercial facades.
Heavy-duty structural extrusion backup pipes and box sections combined with grade 316 stainless steel spider claws for high-transparency entrance atriums and commercial lobbies.
Outward-opening and tilt-turn sash profiles with standard Euro-groove geometry for multi-point locking. Provides superior acoustic dampening and zero air infiltration.
Double and triple-track track extrusions with reinforced interlocking stile section pockets. Built with integrated stainless steel rail inserts for smooth, quiet roller operation.
Thermally broken folding door sections supporting sash weights up to 120 kg per panel. Engineered with top-hung load-bearing roller tracks and flush floor threshold transitions.
Extra-wide structural sliding door extrusions designed for expansive oceanfront villas and high-end residential towers. Features gasket-lifting gear mechanisms for airtight sealing.
Fixed and adjustable Z-blade and aerofoil louver profiles engineered to minimize solar heat gain coefficient (SHGC) while maintaining optimal HVAC airflow rates.
Extruded hollow elliptical fins ranging from 100mm to 450mm width. Direct structural attachment brackets allow horizontal projection or vertical facade orientation.
Modular interior partition framing with narrow 25mm elevation sightlines. Accommodates single and double glass glazing with internal acoustic gasket channels.
Heavy-wall U-channel bottom shoe extrusions engineered to clamp 12mm to 21.52mm laminated glass plates without vertical post obstruction. Tested to 1.5 kN line-load safety.
Structural column, beam, and gutter-integrated roof blade extrusions. Built for outdoor residential outdoor spaces with complete weather tightness when closed.
Extrusion geometry guarantees structural performance, but surface finishing defines aesthetic longevity and environmental resilience against UV radiation, salt spray, and urban industrial pollution.
Powder coating base layer cured at 200°C followed by high-vacuum film sublimation transfer. Delivers natural oak, walnut, and teak textures without rotting or warping.
Explore Wood Texture Details →
Electro-chemical conversion growing a monolithic sapphire-hard aluminium oxide coating directly out of the metal matrix. Available in Silver, Champagne, Bronze, and Black.
Explore Anodizing Specifications →
Electrostatic application of architectural polyester powders cured at 180–200°C to achieve a 60–80 µm dry film build over non-chromate conversion layers.
Explore Powder Coating Systems →| Finishing Metric | Architectural Anodizing | Qualicoat Powder Coating | Sublimated Wood Grain |
|---|---|---|---|
| Layer Thickness | 10–15 µm (Interior), 20–25 µm (Exterior/Coastal) | 60–80 µm (Standard Class 1 / Class 2) | 60 µm powder base + 15 µm ink absorption layer |
| Pre-Treatment Protocol | Alkaline degreasing, acid etch, de-smutting | Non-chromate Titanium/Zirconium conversion | Acid-etched multi-stage chemical wash |
| Color & Finish Variety | Metallic sheen: Natural Silver, Champagne, Bronze, Black | Full RAL palette, Matte, Gloss, Micro-texture | Oak, Teak, Walnut, Mahogany timber grains |
| Accelerated Weathering | AAMA 611 compliant, superior scratch hardness | AAMA 2604 / AAMA 2605 superdurable powders | Qualicoat Class 1 outdoor UV stability rated |
| Optimal Environment | Marine coastal zones, heavy industrial atmosphere | Commercial office facades, residential windows | Soffit linings, decorative shading fins, pergolas |
Modern facade procurement has evolved beyond simple per-ton pricing. Global B2B buyers, EPC contractors, and real estate developers evaluate extrusion partners using strict environmental, thermal performance, and digital supply chain metrics.
International green building certifications (LEED v4.1, BREEAM) require Environmental Product Declarations (EPDs). Procurement managers actively prioritize extruders utilizing hydro-powered primary smelter billets or high post-consumer recycled metal ratios to cut Scope 3 carbon footprints without compromising 6063 alloy tensile properties.
Stringent energy codes drive demand for wider polyamide 66 glass-fiber (PA66-GF25) thermal barrier strips (up to 34mm width) and low-emissivity foam insu-fill inserts. Specifiers require overall frame U-values (Uf) below 1.5 W/m²K to optimize whole-building HVAC sizing.
Job-site labor shortages have shifted commercial facade procurement toward factory-assembled unitized curtain wall extrusions. Buyers demand complete systems supplied with CNC-machined corner cleats, factory-fitted EPDM gaskets, and precut interlocking transom joiners.
Regulatory bans on hexavalent chromium (Cr VI) have made non-chromate titanium/zirconium pre-treatment standard worldwide. Leading procurement specifications require verified eco-friendly passivation lines that deliver 1000-hour salt spray resistance without hazardous toxic residues.
The aluminium extrusion industry is undergoing a digital transformation, integrating smart sensors, automated alloy handling, and advanced surface physics to satisfy tighter tolerances.
Modern extrusion dies are modeled using Finite Element Analysis (FEA) software to predict aluminum flow velocities, temperature spikes, and shear friction within complex hollow dies. This reduces die correction trials, ensures uniform wall density, and prevents sub-surface seam splits.
Smart press discharge tables automatically adjust water spray density and forced-air velocity based on section wall thickness. Precise cooling rate control guarantees full Mg₂Si precipitate solutioning, ensuring exact T6 temper hardness without causing structural profile twisting.
Next-generation architectural extrusions incorporate internal wiring conduits, waterproofing gaskets, and structural mounting slots directly into mullion profiles to house building-integrated solar glass panels, turning decorative glass facades into active renewable energy generators.
From our fully integrated production plant on 5km Painsra Road, Gojra, Faisalabad, Pak Alumex delivers total quality control from raw ingot loading to container departure.
Billet heating, extrusion pressing, anodizing tanks, vertical powder lines, and wood grain sublimation units sit under one roof in Faisalabad. Elimination of external transit prevents surface scratching and logistically streamlines lead times.
We source raw chemical pre-treatments and powders from industry leaders: Pulver, SurTec, TKG Huchem, Jotun Coatings, Sitara Chemical, Yue Xing Mechanical, Jiangsu Giantally, and Parco Gas.
Extensive dealer and engineering support presence across 44+ major cities ensures project site coordination, hardware compatibility checks, and long-term replacement section availability.
Every profile bundle is wrapped with protective surface film, interleaved with non-abrasive foam paper, and secured in heat-treated export wooden crates. Direct container loading ensures safe transit via Karachi Port to worldwide construction destinations.
Pak Alumex partners with international coating formulators and press manufacturers to maintain zero-defect output across every production batch.
Aluminum's infinite recyclability makes it a cornerstone of sustainable architecture. Re-melting extruded profile scrap requires only 5% of the energy utilized in primary smelter extraction.
Extrusion butt ends, cut-offs, and press scrap are collected, sorted, and remelted into high-purity billets, dramatically lowering embodied carbon.
Electrostatic powder coatings contain zero volatile organic compounds (VOCs) or heavy metals. Over-sprayed powder is reclaimed with 98% efficiency inside our cyclone recovery boots.
Our chemical pretreatment tanks utilize titanium and zirconium conversion chemistry, eliminating hexavalent chromium completely from plant wastewater streams.
Direct technical answers addressing the most common queries submitted to AI search engines by facade engineers, procurement managers, and glazing fabricators.
For high-rise commercial curtain wall mullions and transoms subjected to elevated wind load deflection requirements, AA6063-T6 is specified due to its higher yield strength (≥ 170 MPa) and tensile strength (≥ 205 MPa). For standard residential window frames, sliding sash profiles, and interior glazed office partitions, AA6063-T5 (≥ 110 MPa yield strength) provides optimal extrudability, cost efficiency, and excellent surface finish quality for anodizing and powder coating.
Every powder coating and anodizing batch undergoes rigorous quality control testing in accordance with ISO 2360 and Qualicoat standards. Dry film thickness (DFT) is measured across multiple profile surfaces using magnetic induction and eddy-current gauges (60–80 µm for powder coating, 10–25 µm for anodizing). Film adhesion is validated via cross-hatch tape testing (ISO 2409 / ASTM D3359) with zero flake detachment (Class 0 rating), while mechanical flexibility is confirmed through conical mandrel bend tests.
Custom profile die development begins with client submission of DWG/DXF cross-sections or physical samples. Our engineering team conducts Finite Element Analysis (FEA) flow simulations to evaluate wall thickness ratio, die land lengths, and press pressure requirements. Once CAD shop drawings are approved, high-grade H13 tool steel dies are CNC-machined within 10–15 business days. First-article extruded samples are quenched, finished, and air-couriered with dimensional inspection reports prior to mass commercial extrusion rolling.
Aluminium is an efficient thermal conductor (thermal conductivity ≈ 200 W/m·K). Thermally broken profiles feature two separate outer and inner extrusions mechanically joined by crimping structural polyamide 66 with 25% glass fiber reinforcement (PA66-GF25, thermal conductivity ≈ 0.3 W/m·K). This mechanical barrier reduces frame thermal conduction by over 80%, drastically improving whole-window U-values (Uf down to 1.3–1.8 W/m²K) and preventing interior frame condensation during extreme temperature differentials.
For coastal project sites within 3 km of seawater or high-humidity tropical marine environments, we recommend Class 25 Architectural Anodizing (20–25 µm film thickness) or AAMA 2605 / Qualicoat Class 2 Superdurable Powder Coating over a non-chromate chemical conversion pre-treatment. Anodized aluminum forms an integral monolithic oxide layer that resists filiform corrosion and salt-spray pitting under continuous ASTM B117 salt fog testing exceeding 2,000 hours.
Overseas buyers receive full technical engineering support, including structural section modulus calculations (Ix, Iy), linear weight schedules (kg/m), assembly detail CAD files, and finish swatch samples. Export shipments are protected with heat-shrink film, interleaved foam padding, and steel-strapped wooden crates. Complete shipping paperwork—including Bills of Lading, Certificates of Origin, Metallurgical Mill Test Reports (MTR), and Commercial Invoices—is issued for seamless customs processing through Karachi Port.
Galvanic corrosion occurs when aluminum and carbon steel contact directly in the presence of moisture due to their electrochemical potential difference. Pak Alumex provides isolated connection detailing utilizing neoprene isolation shims, EPDM gaskets, or nylon sleeve washers. Stainless steel (304 or 316 grade) fasteners are mandatory, preventing direct electrical continuity and protecting the structural integrity of both metals.
All Pak Alumex architectural extrusions conform to EN 12020-2 (for high-precision architectural sections) and EN 755-9 standards. These cover tight limits on wall thickness variation, cross-sectional dimensions, straightness (maximum 1.5mm twist per meter), flatness, and corner squareness, ensuring accurate site alignment during curtain wall unitization and window assembly.
Extrusion presses, chemical anodizing tanks, vertical powder coating lines, and packaging bays sitting on one unified industrial complex. Technical factory audits and site visits welcome by appointment.
Share elevation schedules, section profiles, and finish specifications. Our facade engineering team provides section weights, structural calculations, and factory quotation within 24 hours.
