GNEE Aluminum has completed another export order of 5052-H32 aluminum perforated sheet for an HVAC fabrication company based in Vietnam. The 95-ton order was produced for HVAC ducting, air-handling units and architectural grilles, where corrosion resistance in a humid, coastal climate, low weight for suspended systems, and a controlled open area for airflow were the customer's primary concerns. The material was shipped to Ho Chi Minh City as three full container loads and released on a five-week rolling schedule, so the buyer could match deliveries to its installation pace rather than holding finished stock on site.
This shipment extends GNEE's record of supplying aluminum sheet to industrial buyers across Southeast Asia and shows the company's ability to meet order-specific hole patterns, tempers and inspection requirements without compromising delivery.
Vietnam is a fast-growing market for electronics, construction and processing, and its HVAC and building-services sector has expanded with new commercial, residential and industrial projects around Ho Chi Minh City and the southern provinces. Buyers in this market typically require compliance with ASTM B209 / EN 485 / EN 573 specifications, full material traceability, tight dimensional accuracy, and third-party inspection documentation.
Customer Technical Requirements
During the technical evaluation, the Vietnam customer submitted detailed panel dimensions, hole size and pitch, and requested inspection procedures aligned with ASTM B209 / EN 485 / EN 573 to ensure service reliability. GNEE's technical team confirmed alloy, temper and tolerances against the application conditions, reviewed the perforation drawing, and agreed on the inspection plan, surface condition and packing method before the order entered production. Any deviation from the agreed specification was resolved with the customer in advance.
For HVAC ducting, air-handling units and architectural grilles, the selected 5052-H32 aluminum perforated sheet delivers the properties the application demands. 5052 is a 5xxx Al-Mg alloy with good marine corrosion resistance and formability, which matters in Vietnam's humid, salt-influenced coastal environment where untreated carbon steel would rust quickly. The 2.0 mm base thickness gives the panel enough stiffness for spans in ductwork and grilles while staying light enough for suspended ceiling and wall systems, and the 8 mm round holes provide the open area needed for air passage without sacrificing panel strength. In service, the material must keep its corrosion resistance and dimensional stability through cutting, bending and frame assembly; GNEE's technical team reviewed the customer's drawing and operating conditions, then confirmed the alloy, temper and tolerance class before production so the supplied lot matched the downstream process without rework.
Order Specification
| Product | 5052-H32 aluminum perforated sheet |
|---|---|
| Alloy | 5052 (5xxx Al-Mg) |
| Temper | H32 (stabilized quarter-hard; selected per order) |
| Standard | ASTM B209 / EN 485 / EN 573 |
| Base Thickness | 2.0 mm |
| Hole Pattern | 8 mm round holes (pitch and layout per customer drawing) |
| Open Area | set by ordered pitch |
| Order Quantity | 95 tons (three container loads) |
| Surface Finish | mill finish |
| Destination | Ho Chi Minh City, Vietnam |
| Delivery Schedule | five-week rolling schedule to match install pace |
| Lead Time | 15-30 days after order confirmation |
| MTC | EN 10204 3.1 mill test certificate (3.2 and third-party inspection available on request) |
Quality Control
Every aluminum perforated sheet in this order was produced and inspected under GNEE's standard quality system, from incoming ingot verification to final dimensional, perforation and visual checks. Mill test certificates to EN 10204 3.1 are provided with the shipment; 3.2 certificates and third-party inspection (such as SGS or BV) can be arranged on request. The inspection items below were applied to this lot and recorded in the corresponding mill test report.
Hole diameter and pitch verification per drawing - confirms each hole matches the specified diameter and centre-to-centre pitch so the open area and appearance stay consistent across the lot.
Open-area check - verifies the calculated open area against the agreed pattern; the value depends on the ordered pitch and is recorded once the pattern is fixed.
Burr and edge-break inspection after perforation - checks that holes are clean and deburred so the sheet is safe to handle and without snag points during fabrication and installation.
Flatness and base-thickness gauge - checks the 2.0 mm base thickness tolerance and panel flatness so the sheet cuts, bends and frames without distortion.
Tensile test (per MTC) - confirms the sheet meets the mechanical properties of the H32 temper before the lot is released.
Visual and surface inspection - verifies the mill-finish condition and edge quality for welding, bending and fabrication readiness.
Export Packaging for Safe Delivery to Vietnam
For the delivery to Ho Chi Minh City, the aluminum perforated sheet was packed with seaworthy export materials - protected with interleaving paper and bound on strong wooden or steel pallets, with moisture-proof wrapping as required to survive the ocean voyage and high humidity on arrival. The 95-ton lot was consolidated into three container loads, with each bundle labelled with heat number, dimensions and net / gross weight. Packing lists, commercial invoice, bill of lading and the EN 10204 3.1 MTC were prepared for smooth customs clearance, and packing photos can be shared before container loading. The three containers were released on the agreed five-week rolling schedule so the buyer received material in step with its production and installation plan.
Available Sizes from GNEE
In addition to the ordered dimensions above, GNEE supplies aluminum sheet in the standard ranges listed below and produces perforated patterns to customer drawing. Common hole diameters run from roughly 1 mm to 20 mm with pitches and layouts set per pattern; the open area follows from the chosen pitch. Custom sizes and hole patterns can be produced to drawing - share your required alloy, temper, thickness, hole pattern and dimensions for a quotation.
| Dimension type | Typical range | Tolerance standard |
|---|---|---|
| Thickness (sheet) | 0.5 – 6 mm | EN 485-2 / ASTM B209 |
| Width | up to 2600 mm | ± width class per EN 485 |
| Length | up to 12000 mm | ± length class per EN 485 |
| Hole diameter (perforated) | approx. 1 – 20 mm | per customer drawing / pattern |
| Flatness | per EN 485 flatness class | EN 485-3 |
About GNEE
GNEE Aluminum exports aluminum products to 100+ countries and regions. Common sizes and tempers are kept in stock; both large and small orders are accepted; technical team assists alloy and temper selection by service condition. Standard and custom dimensions can be produced to drawing for fast turnaround. Typical lead time is 15-30 days. Every shipment is backed by EN 10204 3.1 mill test certificate (3.2 and third-party inspection available on request), and the technical team supports alloy selection, tolerance definition, hole-pattern definition and inspection planning for each order.
FAQ
What standard and certificate apply to 5052-H32 aluminum perforated sheet?
This product is supplied to ASTM B209 and EN 485 / EN 573, with an EN 10204 3.1 mill test certificate. Third-party inspection and 3.2 certificates can be arranged on request.
What hole size and open area can 5052 perforated sheet be supplied with?
This order used 8 mm round holes on 2.0 mm base sheet. Other hole diameters from roughly 1 mm to 20 mm and pitches set per pattern are available; the open area follows from the chosen pitch and pattern (for a 60-degree staggered layout, open area equals about 90.69 times the square of hole-diameter divided by pitch). Tell us your required hole size, pitch and pattern for a quotation.
What is the typical lead time and minimum order quantity?
Standard lead time is 15-30 days after order confirmation. MOQ flexible / small orders acceptable - both trial and volume orders are accepted. For large orders such as this 95-ton lot, a rolling or phased delivery schedule can be agreed to match the buyer's installation pace.
Can GNEE supply 5052-H32 aluminum perforated sheet to Vietnam?
Yes. GNEE supplies eligible end-users and compliant destinations only. Export documents are prepared for smooth customs clearance, and container shipments can be consolidated and scheduled to the buyer's required port or city, such as Ho Chi Minh City.
Do you supply other sizes of aluminum perforated sheet besides the ordered dimensions?
Yes. Besides the lot described above, GNEE keeps a range of standard sheet sizes in stock and can produce custom dimensions, hole patterns and tempers to drawing. The typical supply range for aluminum sheet is listed in the Available Sizes section of this page. Tell us your required alloy, temper, thickness, hole pattern and dimensions for a quotation.