pre painted aluminum roofing



Alloy AA 3003 /EN ​AW-3004
Temper H41, H44
Dimensions: Gauge: 0,7 mm-1.2mm
Width: 600 mm/1200 mm
Specific weight: 1,9 kg/m²
Tensile strength Rm[MPa] 130 - 170 N/mm2
Proof Stress Rp0,2[MPa] > 100 N/mm2
Elongation A50[%] > 6%
Thermal expansion: Coefficient of linear expansion: 0,024 mm/m/K
Elasticity: Modulus of elasticity: -70.000 MPa
Fire protection: Non-combustible according to EN 13501-A1. Smoke gases comply with DIN 4102 and pose no threat to health.
Gloss 10 or 20 units in the Gardner system, meauring angle 60°,metallic colours with approx 40units.
Colour range Colours as per current HAOMEI colour chart basis on RAL no, with various special colour developments such as simulated copper, titanium to zinc. Minimum quantitied for special colours and special customised tones 1500㎡
Protective film Anti-slip, white, UV-resistant, asymmetrically-perforated protective film.The film can remain on the panels for up to 6 months until all work is complete.
Coating: Front face (exposed side): 2-layer system (primer and top coat applied using coil-coating process). Paint-system: PVDF (polyvinylidene fluoride).
Paint-system PVDF (polyvinylidene fluoride). A number of special colour tones are applied in 3 or even 4 layers.
Reverse face transparent protective lacquer with printed identification No. and RAL NO. An arrow indicates the direction of coating.


Front Face:HAOMEI pre-painted aluminium coil for roof has been coil coated with a PVDF paint system (80/20). The paint thickness is approx. 25µm for a two layer paint system. For special coatings the paint thickness is approx. 40 µm.

Reverse side:The reverse side of HAOMEI is provided with a transparent protective lacquer, thickness approx. 3µm. This protective lacquer is suitable for gluing and foaming. Transparent protective lacquer with HAOMEI symbol.

Protective film:HAOMEI is delivered with a patented, asymmetrically perforated anti-slip protective film for the front side. This protection film is UV-resistant and can remain on the panels for up to six months until all work is complete.

HAOMEI offers a range of pre-painted aluminum products designed specifically for roofing materials that deliver:

  • 1.A variety of color choices
  • 2.Exceptional UV resistance
  • 3.Excellent resistance to corrosion
  • 4.High plasticity and workability

HAOMEI prepaited aluinum for roofing have the Function--cost-effective and easy to work, the alloy, coating and elasticity of HAOMEI prepainted aluinum has been specially geared for working in plumbing technology, The prepainted is therefore ideal for lock-welt technologies such as double lock-welt or ledge roof technologies, but can also be cut, sawn, folded, drilled or riveted without problem using standard machines--and without the coating chipping or cracking.

  • Angle Lock-welt 

    Angle lock-welt

    Used primarily for wall claddings

  • Double Lock-welt 

    double lock-welt

    Suitable for roofing and wall cladding

  • Ledge Roof 

    ledge roof

    Used primarily for wall cladding

production process:

The PVDF coating features good shaping properties and outstanding resistance to weather conditions.

The PVDF coating comes in a 80/20 quality(80%PVDF+20% acrylate) which is used for HAOMEI, and a PVDF coating in 70/30(70%PVDF+30% acrylate). Generally speaking, the higher the PVDF content, the better the resistance to weathering and annual erosion. In general term, the higher the PVDF content, the better resistance to weathering.

This means that the groundwater is not contaminated, the pigment used are normally non-hazardous, in some cases they are even safe for use with foodstuffs. The processing for producting the pre painted aluminum for roofing: