Aluminum Profile

Aluminum Angles

Aluminum Beams

Aluminum Channels

Standard Profiles

T-Slot Profiles

Heat Sink Profiles

Architectural Profiles

Industrial & Solar

Transportation

Custom Extrusions

1. Raw Material & Chemical Analysis
Before any extrusion begins, we test the raw aluminum billets using Optical Emission Spectrometry (OES) to precisely verify the chemical composition of the alloy (e.g., 6061, 6063, 7075, and 5083). We guarantee that impurity levels are strictly controlled. A Mill Test Certificate (MTC EN 10204 3.1) containing actual heat numbers and chemical breakdowns is provided with every shipment.

2. Dimensional & Geometric Precision
We utilize Coordinate Measuring Machines (CMM) and Optical Profile Projectors to inspect complex cross-sections.
Strict tolerance checks are performed on wall thickness, straightness, flatness, twist, and concentricity, ensuring compliance with EN 755-9 or your specific CAD drawings.
For threaded flanges, we use standard thread plug gauges to ensure perfect mating.

3. Mechanical Property Testing
We measure Tensile Strength, Yield Strength, and Elongation.
Hardness Testing (using Webster, Brinell, or Vickers hardness testers) is routinely performed to verify that the aluminum has achieved the exact temper state required (such as T4, T5, or T6).

4. Non-Destructive Testing (NDT) for Fittings
For heavy-duty aluminum flanges and welded elbows, we perform Non-Destructive Testing to detect internal defects.
Ultrasonic Testing (UT) to identify internal voids or micro-cracks in thick-walled sections.
Dye Penetrant Testing (PT) to verify the integrity of welded joints on customized aluminum elbows, ensuring completely leak-proof performance under pressure.

5. Surface Finish & Coating Verification
For profiles requiring anodizing, powder coating, or fluorocarbon (PVDF) spraying, we ensure the finish is both aesthetically perfect and highly durable.
Coating Thickness Check: We use eddy-current thickness gauges to ensure the anodic film or powder coating reaches the exact specified micrometers (μm).
Durability Testing: Routine cross-hatch adhesion tests and salt spray chamber tests are conducted to guarantee long-term weather and corrosion resistance.
Color Matching: Spectrophotometers are used to eliminate color differences across different batches.

At GNEE, we simplify the custom manufacturing process. Here is our standard operating procedure for custom extrusions, elbows, and flanges:
 

Step 1: Drawing Evaluation & DFM (Design for Manufacturability)

• Submission: Send us your 2D drawings (DWG, DXF, PDF) or 3D models (STP, STEP, IGS).
• Engineering Review: Our technical team will conduct a thorough DFM analysis. We evaluate the extrudability, wall thickness variations, hollow ratios, and tolerance feasibility. If a design risks die breakage or surface defects, we will provide professional optimization suggestions.
• Rapid Quote: A comprehensive quotation (including unit price, tooling cost, MOQ, and lead time) will be provided within 24 to 48 hours.

Step 2: In-House Tooling & Die Design

• Material: We use premium H13 tool steel for die manufacturing to ensure long die life and consistent profile dimensions.
• Machining: Utilizing advanced Wire EDM and CNC machining, we cut solid, semi-hollow, and hollow dies with extreme precision.
• Lead Time: Tooling production typically takes only 7 to 15 days, depending on the complexity of the profile.
• Note: We offer flexible tooling cost refund policies once your cumulative order volume reaches the agreed tonnage.

Step 3: First Article Inspection (FAI) & Sample Approval
Before mass production, we perform a trial run (T1 sample).
Our QC team conducts full dimensional checks on the sample using CMM. We will send the physical pre-production samples to you via international express (DHL/FedEx) for structural and assembly testing.

Step 4: Mass Extrusion & Heat Treatment
Once approved, we proceed with mass extrusion using highly pure aluminum billets.
The extruded profiles are quenched and mechanically stretched to eliminate internal stress, twist, and warping.
Profiles are then placed into aging ovens to achieve the precise mechanical temper state you require, such as T4, T5, T6, or T6511, ensuring optimal tensile and yield strength.

Step 5: Deep Fabrication & CNC Machining
Unlike standard material suppliers, GNEE offers complete in-house deep processing—crucial for our custom flanges, elbows, and industrial parts:

• Cutting: Precision cut-to-length services with tight tolerances.
• Machining: CNC turning (for flanges), multi-axis CNC milling, drilling, tapping, and chamfering.
• Forming: Precision tube bending for 45°/90° elbows, punching, and certified TIG/MIG welding.

Step 6: Surface Treatment & Finishing
Depending on your application environment, we apply the required surface finish:
Standard Mill Finish (clean and oil-free).
Anodizing (Clear, Black, Color, or Hard Anodizing Type III) for enhanced wear resistance.
Powder Coating & Sandblasting for architectural or consumer-facing parts.

Step 7: Final QC & Custom Logistics
100% final visual and dimensional inspection. Mill Test Certificates (MTC) are issued.
Packaging: We use protective film, interleaving pearl cotton (EPE), shrink wrap, and reinforced wooden crates to ensure zero surface scratches or deformation during ocean transit.
Shipping: We manage FOB, CIF, or DDP logistics tailored to your supply chain needs.

Why Choose GNEE for Your Aluminum Needs?

Henan Gnee New Material Co., Ltd. is a modern supply chain enterprise with aluminum processing, sales, and distribution as its core industries. It was established in 2008. After about 18 years of development, it has customers in more than 100 countries and regions around the world. The company specializes in the production of high-quality aluminum products, including aluminum foil, aluminum tubes, aluminum alloy plates, aluminum rods, aluminum coils, etc.

Henan Gnee New Material Co., Ltd. is one of the most professional aluminum profile manufacturers and suppliers in China, featured by quality products and competitive price. Please rest assured to buy aluminum profile for sale here from our factory.