Sahara Bronze & Earth Tones
Deep metallic luster with high UV stability for curtain wall mullions and decorative exterior fins.
Powder Coating
Color-stable electrostatic polyester powder coating engineered for weather exposure, UV resistance, and precise architectural RAL color matching.
Engineering Standards
Qualicoat-Compliant Industrial Powder Coating Process
At Pak Alumex, powder coating is executed as a controlled chemical and thermal process rather than a basic spray operation. Applied electrostatically over a chromate-free pre-treatment layer and cured at 180°C–200°C, our coatings deliver a uniform 60–80 µm polymer film tailored for severe exterior architectural exposure.
Stage 01
Chromate-Free Pre-treatment
Multi-stage bath wash removes die lubricants and forms a non-chromate conversion layer to guarantee paint adhesion and inter-granular corrosion resistance.
Stage 02
Electrostatic Application
Automated spray guns impart a precise negative charge to polyester resin powders, ensuring 100% wrap-around coverage even on complex extruded cavities.
Stage 03
Thermal Curing
Conveyorized curing ovens maintain computerized temperature gradients at 180–200°C to achieve full polymer cross-linking and structural film toughness.
Stage 04
Quality Testing
Batch testing including dry film thickness (ISO 2178), cross-hatch tape adhesion (ISO 2409), gloss metering, and direct impact verification before order release.
Sahara Series
Sahara Textured & Metallic Powder Finishes
Warm metallic tones and tactile textured finishes engineered for modern architectural profiles. The Sahara collection provides enhanced scratch resistance and hides minor surface wear on heavy-traffic building facades.
Sahara Metallic Gold
Warm metallic gold texture providing luxury aesthetics without the oxidation concerns of natural metals.
Sahara Champagne
Refined light metallic tone specified for high-end residential window framing and commercial entryways.
Sahara Charcoal & Anthracite
Tactile dark grey texture delivering low glare and modern architectural aesthetics for store frontages.
Sahara Silver Sand
Bright metallic silver powder coat with micro-texture surface for improved abrasion resistance.
Sahara Copper & Rust
Architectural feature finish replicating patinated metal for louvers, soffits, and cladding panels.
Sahara Mid-Grey Texture
Neutral architectural grey offering clean weatherability for mid-rise facade applications.
Sahara Deep Anodized-Look Bronze
Combines the rich depth of anodized bronze with the seamless batch uniformity of powder coating.
Sahara Matt Black
Ultra-durable textured black finish designed for high-contrast window frames and structural louvers.
Classic RAL Range
Precision RAL Color Architectural Palette
Pak Alumex utilizes high-grade architectural polyester powders from certified suppliers like Jotun and Pulver. We offer complete RAL Classic color spectrum matching with controlled gloss levels ranging from 30% matte to 85% high-gloss finish.
RAL Pure White & Cream Tones
High-solar-reflectance whites and neutral light tones for thermal management on window systems.
RAL Window Grey & Silver Tones
Standard commercial architectural greys, color-matched across extrusion batches with zero shade variance.
RAL Anthracite & Dark Slate
Modern facade dark shades formulated with super-durable pigments to withstand tropical UV exposure.
RAL Bronze & Earth Tones
Warm architectural palette ideal for residential developments and hospitality building facades.
RAL Custom Architectural Shades
Bespoke color matching from specifier spectrophotometer readings or physical physical master samples.
RAL High-Gloss & Satin Series
Controlled sheen levels providing smooth washability and reduced surface dirt retention over time.
Surface Finishing Portfolio
Complementary Finish Technologies
In addition to architectural powder coating, Pak Alumex operates in-house anodizing and wood-texture sublimation lines to fulfill multi-spec facade requirements under one roof.
Technical Performance
Powder Coating Technical Specifications
Key performance indicators for our architectural powder coating line verified under laboratory test conditions.
| Parameter | Pak Alumex Standard | Test Method / Compliance Standard |
|---|---|---|
| Dry Film Thickness | 60 – 80 Microns (µm) | ISO 2178 / ASTM B499 |
| Pre-treatment Type | Chromate-Free Zirconium Conversion | Qualicoat Specifications / AAMA 2604 |
| Cross-Hatch Adhesion | Class 0 (100% Adhesion retained) | ISO 2409 / ASTM D3359 |
| Salt Spray Corrosion Resistance | 1,000+ Hours (Neutral Salt Spray) | ISO 9227 / ASTM B117 |
| Direct / Reverse Impact | 2.5 Nm (No cracking or flaking) | ISO 6272 / ASTM D2794 |
| Curing Temperature | 180°C – 200°C (10–15 minutes dwell) | In-line Oven Temperature Data Logging |
| Gloss Range Options | 30% Matte – 85% High Gloss | ISO 2813 (60° Glossmeter) |
Buyer Technical Guidance
Frequently Asked Questions
Essential information for overseas procurement teams, facade engineers, and glazing contractors.
Pak Alumex applies polyester powder coatings at a continuous dry film build of 60–80 microns over a multi-stage chromate-free pre-treatment line, fully complying with Qualicoat Class 1 & 2 and AAMA 2604 requirements for exterior building facades.
Yes. We provide the complete standard RAL Classic palette, custom color-matching services, matte/gloss level adjustment, and high-durability textured collections such as our Sahara sand-texture metallic finishes.
Every production lot is subjected to strict quality control, including cross-hatch tape adhesion testing (ISO 2409), gloss level checks, direct/reverse impact testing, and continuous neutral salt-spray chamber audits to guarantee long-term UV stability and corrosion resistance.
Each profile length is wrapped with protective PE interleaving film to safeguard against surface friction. Bundles are securely strapped, wrapped in protective moisture barriers, and packaged in reinforced wooden crates or export bundles ready for sea transport from Karachi Port.