Custom Aluminium Extrusion Profiles Manufacturer | China Supplier | Zhengna Technology

Aluminum extrusion is a manufacturing process where aluminum alloy material is forced through a die with a specific cross-sectional profile. The process involves heating aluminum billets to 400-500°C, then using hydraulic pressure to push the softened aluminum through the die opening. This creates continuous lengths of aluminum with consistent cross-sections that can be cut to required lengths. The process is ideal for creating complex profiles that would be difficult or expensive to produce by other methods.

Aluminum extrusion offers several key advantages: (1) Design flexibility - complex cross-sections are possible; (2) Cost-effective tooling - dies are relatively inexpensive compared to injection molds; (3) Material efficiency - minimal waste compared to machining; (4) Lightweight strength - excellent strength-to-weight ratio; (5) Corrosion resistance - natural oxide layer protects against corrosion; (6) Thermal and electrical conductivity - good for heat sinks and electrical applications; (7) Recyclability - aluminum is 100% recyclable without quality loss.

We primarily work with 6000-series aluminum alloys, particularly 6061 and 6063, which offer excellent extrudability and mechanical properties. 6061 provides higher strength and is ideal for structural applications, while 6063 offers better surface finish and is preferred for architectural applications. We can also work with 6005, 6082, 6463, and high-strength alloys like 7075 for specialized applications. Each alloy has specific characteristics - our engineers can help you select the optimal material based on your requirements for strength, corrosion resistance, machinability, and cost.

Our extrusion capabilities range from small precision profiles to large structural sections. Minimum dimensions: We can produce profiles with wall thickness as thin as 0.8mm and circumscribing circle diameters as small as 10mm. Maximum dimensions: Our largest presses can handle profiles with circumscribing circle diameters up to 254mm (10 inches) and cross-sectional dimensions up to 250mm × 80mm. The specific limits depend on alloy type, profile complexity, and required tolerances. Contact us with your design for a feasibility assessment.

We maintain tight tolerances based on industry standards (EN 12020-2, ASTM B221). Typical tolerances include: Cross-sectional dimensions: ±0.1mm to ±0.5mm depending on size; Straightness: 0.5mm per meter maximum; Angularity: ±1°; Twist: 1° per meter maximum; Length: ±0.5mm to ±1.0mm. Tighter tolerances are achievable with additional machining operations. Factors affecting tolerance include alloy type, profile complexity, wall thickness, and extrusion parameters.

Lead times vary based on project complexity: Standard profiles: 2-4 weeks for production; Custom profiles with new die: 4-6 weeks (includes 2-3 weeks for die design and manufacturing); Prototype quantities: 2-3 weeks using existing dies or rapid tooling; Large volume orders: 6-8 weeks for production scheduling. Die manufacturing typically takes 2-3 weeks. We offer expedited services for urgent projects - contact us with your timeline requirements.

We offer multiple surface finishing options: Mill finish: As-extruded surface with visible die lines; Anodizing: Clear, black, or colored anodizing in various thicknesses (5-25μm) for corrosion resistance and appearance; Powder coating: Wide range of colors and textures with excellent durability; Mechanical finishes: Brushing, polishing, sandblasting, or bead blasting; Chemical treatments: Chromate conversion coating for paint adhesion. We can also apply protective films to prevent scratching during handling and shipping.

Yes, we offer comprehensive post-extrusion services in our 20,000 sqm facility in Zhejiang: CNC machining: Milling, drilling, tapping, threading, and contouring; Cutting and mitering: Precision cutting to length, miter cutting for frames; Bending and forming: Cold bending of extruded profiles; Welding and assembly: TIG and MIG welding of aluminum components; Quality inspection: Dimensional verification, surface inspection, and material certification. Our turnkey approach reduces supply chain complexity and ensures consistent quality.

MOQ depends on profile complexity and die cost: Standard profiles: 500kg minimum; Custom profiles with new die: Typically 1000-2000kg to amortize die cost; Prototype quantities: We can produce as little as 50-100kg using existing dies or shared tooling; High-volume production: No upper limit - we've handled orders exceeding 100 tons. For new customers or complex profiles, we may require a minimum order to cover die cost. Contact us with your requirements for a customized quotation.

Our quality control process includes: Material certification: All aluminum billets come with mill certificates; In-process inspection: Temperature monitoring, pressure control, and speed regulation during extrusion; Dimensional verification: First article inspection and statistical process control; Surface inspection: Visual examination for defects like die lines, scratches, or discoloration; Mechanical testing: Hardness testing, tensile testing as required; Documentation: Material certificates, inspection reports, and compliance documentation. We are ISO 9001 certified and follow industry standards for aluminum extrusion.