- 1 - ICS 77.150.10  
H 61  
 
 
 
 
National Standard  
of the People's Republic of China  
 
 
GB5237.2 - 200X  
Replaces GB 5237.2 -2004  
 
 
Wrought aluminium alloy extruded 
profiles for architecture  
 
Part 2: Anodised Profiles  
  
Draft for approval  
 
 
 
Issue Date: 200X – XX – XX Implementation Date: 200X – XX – XX
 
 
Issued by the General Administration of Quality Supervision, Inspection and 
Quarantine of the People's Republic of China and the  
Standardisation Administration of the People's Republic of China (SAC)  
 
           
- 2 - GB 5237.2 - 200X  
 
Foreword  
 
 
 
Sections 4.4.1 and 4.4.2 of this Standard are mandatory, whilst the rest are recommended.  
 
GB 5237, “Wrought aluminium alloy extruded profiles for architecture” is divided into six parts:  
 
− Part 1: Untreated profiles  
− Part 2: Anod ised profiles  
− Part 3: Electrophoretic coating profiles  
− Part 4: Powder coating profiles  
− Part 5: PVDF coating profiles  
− Part 6: Thermal barrier profiles  
 
This is Part 2 of GB 5237.  
 
This Part replaces  Part 2 of GB 5237.2 – 2004 “Wrought aluminium alloy extrud ed profiles for 
architecture -Part 2: Anodised coloured profiles”.  
 
This Part has been revised with reference to JIS H 8601 -1999, “Anodic oxide coatings on 
aluminium and aluminium alloys”.  
 
The main technical differences between this Part when compared to G B5237.2 -2004 are:  
− phosphoric acid/chromic acid test with nitric acid preliminary -dip method to assess sealed 
anodic oxide coatings quality has been added;  
− alkali spot test requirements and test method for anodic oxide coating have been withdrawn.  
 
Appendic es A and B to this part are informative annexes.  
 
This part is proposed by the China Non -ferrous Metals Industry Association.  
 
This Part is under the jurisdiction of the National Technical Committee for Standardisation of Non -
ferrous Metals.  
 
Main organisa tions that participated in the drafting of this Part:  
Guangdong Xingfa Aluminium Co., Ltd;  
Fujian Minfa Aluminium Industry Co., Ltd;  
Guangdong JMA Aluminium Profile Factory Co., Ltd;  
Fujian Nanping Aluminium Co., Ltd;  
Chinese Industrial Standard of Non -ferrous Metal Measure Quality Research Institute;  
 
Other units that participated in the drafting of this Part:  
Non-ferrous Metal Quality Supervision and Inspection Centre of the People's Republic of China;  
Non-ferrous Metal Quality Supervision and Inspectio n Centre of South China;  
Foshan Luonan Aluminium Products Co., Ltd;  
Foshan Jihua Aluminium Corporation;  
Beijing East -Asia Aluminium Products Limited Corporation.  - 3 -  
Main drafters of this Part: WuXiKun, FanShunKe, ChenWenSi, ZhuZuFang, ZhengMeiYu, 
DaiYueXin, WuShiWen, ZhangZhongXing, ZhangJiLin.  
 
This Part replaces the previously issued Standards:  
-GB/T 5237 -1985, GB/T 5237 -1993 (the Part concerning anodised coloured profiles), GB/T 
5237.2 -2000, GB 5237.2 -2004.  
 
 
 
 - 4 -           GB 5237.2 - 200X  
Wrought aluminium alloy extruded profiles for architecture  
 
Part 2: Anodised profiles  
 
 
1 Scope  
This Part sets the requirements for the testing methods, inspection rules, packaging, marking, 
transportation, storage and content of contracts (or orders) of wrought aluminium alloy extruded 
profiles coated with anodic oxide for architecture.  
 
This Part applies to anodised and electrolysed or organic painted aluminium alloy extruded profiles 
for architecture (hereafter referred to as anodised profiles).  
 
Other aluminium alloy ma terials that carry similar applications and similar surface treatments may 
refer to and adopt the content of this Part.  
 
2 Normative References  
The provisions of the following documents become provisions of this Part after being referenced. 
For dated refer ence documents, all later amendments (excluding corrigenda) and versions do not 
apply to this Part; however, the parties to the agreement are encouraged to study whether the latest 
versions of these documents are applicable. For undated reference documents , the latest versions 
apply to this Part.  
 
GB/T 228 -2002 Metallic materials – Tensile testing at ambient temperature;  
 
GB/T 1766 Paints and varnishes - Rating schemes for degradation of coats;  
 
GB/T 4957 Non -conductive coatings on non -magnetic basic metals  – Measurement of coating 
thickness – Eddy Current;  
 
GB/T 5237.1 Wrought aluminium alloy extruded profiles for architecture - Part 1: Untreated 
profiles;  
 
GB/T 6461 Methods for corrosion testing of metallic and other inorganic coating on metallic 
substrate s – Rating of test specimens and manufactured articles subjected to corrosion tests;  
 
GB/T 6462 Metallic and oxide coating – Measurement of coating thickness - Microscopical 
method;  
 
GB/T 8013.1 -2007 Anodic oxide coatings and organic polymer coatings on al uminium and its 
alloys – Part 1: Anodic oxide coatings;  
 
GB/T 8014.1 Anodising of aluminium and its alloys – The measuring method of thickness of anodic 
oxide coatings – Part 1: The measuring principle;  
 
GB/T 8753.2 Anodising of aluminium and aluminium all oys – Assessment of quality of sealed 
anodic oxide coatings – Part 2: Phosphoric acid/chromic acid test with nitric acid pre dip;  - 5 -  
GB/T 9276 Methods of exposure to natural weathering of coating;  
 
GB/T 12967.3 Anodising of aluminium alloys – Copper accelera ted acetic acid salt spray test for 
anodic oxide coating (CASS test);  
 
GB/T 12967.4 Anodising of aluminium and aluminium alloys – Determination of fastness to 
ultraviolet light of coloured anodic oxide coatings;  
 
GB/T 14952.3 Anodising of aluminium and its  alloys. Determination of colour differences and 
appearance of coloured anodic oxide films – Viewing method;  
 
GB/T 20975 (All Parts) Chemical analysis methods of aluminium and aluminium alloys.  
3 Terms and definitions  
The terms and definitions set out in G B/T 8013.1 -2007 apply to this Part, as well as the following:  
3.1 Exposed surfaces  
Exposed surfaces refers to anodised profiles that have been processed, manufactured and 
mounted onto a building; the surface of an anodised profile which can still be seen e ither in an 
open or shut state.  
3.2 Local thickness  
Measure the anodic oxide coating thickness of any one inspection area on the exposed surface 
of the anodised profile that is not larger than 1cm2 several times (not less than 3 times); the local 
thickness  is the average value of the measured coating thickness.  
3.3 Average thickness  
The average thickness is the average value of several (not less than 5 different places) local 
anodic oxide coating thickness of the exposed surface of the anodised profile.  
4 Requirements  
4.1 Product classification  
4.1.1 Alloy grades, states, specifications  
The alloy grades, supply states and specifications of the anodised profiles should conform to the 
requirements set out in GB 5237.1.  
4.1.2 Thickness grades, typical applicati ons and surface treatment methods of the anodic 
oxide coatings  
The thickness grades, typical applications and surface treatment methods of the anodic oxide 
coatings should conform to the provisions set out in Table 1. The thickness grade of the anodic 
oxide coating should be clearly indicated in the contract; if the thickness grade of the anodic 
oxide coating is not indicated in the contract, then the anodised profile should be delivered in 
accordance with AA10 products.  
 
 - 6 - Table 1  
Coating Thickness Grade  Typical Application  Surface Treatment 
Method  
AA10  Indoor, outdoor constructions or 
vehicle components  
AA15  Outdoor constructions or 
vehicle components  
AA20 
AA25  Outdoor construction parts 
under harsh environment  Anode oxidation;  
Anode oxidation and 
electrolytic 
colouring;  
Anode oxidation and 
organic colouration  
 
4.1.3 Markings  
The arrangement of the labelling of anodised profiles should be in the following order: product 
name, alloy grade, supply state, product specification (product specification c onsists of the 
anodised profile code name and the anodised profile cut -length), colour, thickness grade of the 
anodic oxide coating and serial number in this part of the Standard. An example of the label is 
shown below:  
 
If the anodised profile is made of 6063 aluminium alloy, its supply state is T5, its profile code is 
421001, its cut -length is 3000 mm, its surface treatment uses anode oxidation and electrolytic 
colouring, it is bronze coloured, and its anodic oxide coating thickness grade is AA15, then th e 
label should be:  
 
Anodised profile 6063 -T5 421001x3000 Bronze AA15 GB5237.2 -200X.  
4.2 Chemical composition, mechanical properties  
The chemical composition and mechanical properties of the anodised profile should conform to 
the requirements set out in GB 5237.1.  
4.3 Dimension deviation  
The dimension deviations of the anodised profiles (including anodic oxide coatings) should 
conform to the requirements set out in GB 5237.1.  
4.4 Properties of the anodic oxide coating  
4.4.1 Coating thickness  
The average thic kness, local thickness of the anodic oxide coating should conform to the 
requirements set out in Table 2.  
 
 
 
 
 
 
 
 - 7 - Table 2  
Coating Thickness 
Grade  Average Thickness/ 
m, not thinner 
than Local 
Thickness/m, not 
thinner than  
AA10  10 8 
AA15  15 12 
AA20  20 16 
AA25  25 20 
 
4.4.2 Quality of the sealed anodic oxide coatings  
After the phosphoric acid/chromic acid test with nitric acid pre -dip, the mass loss of the anodic 
oxide coating should not be more than 30mg/dm2. 
4.4.3 Colour and chromaticism  
The colour of the anodic oxide coatings should be primarily identical to the colour plate agreed 
between the suppliers and buyers, or within the restricted colour range of upper limit and lower 
limit decided through consultation between the suppliers and buyers.  
 
If the  buyers request the Instrumental Method be carried out to test the colours of the anodic 
oxide coatings, the allowable chromaticism value should be decided through consultation 
between the suppliers and the buyers.  
4.4.4 Properties of salt spray corrosion resistance  
The test results of the CASS (copper accelerated acetic acid salt spray test) for the anodic oxide 
coatings should conform to the requirements set out in Table 3.  
4.4.5 Wear resistance  
The results of the Falling -sand Abrasion Test for anodic oxi de coatings should conform to the 
requirements set out in Table 3.  
 
Table 3  
 
Salt Spray Corrosion 
Resistance Property  Wear Resistance  
CASS Test Result  Falling -sand Abrasion Test Result  Coating 
Thickness 
Grade  
Time/Hour  Grade  Abrasion Coefficient ( f), g/m 
AA10  16 9 300 
AA15  24 9 300 
AA20  48 9 300 
AA25  48 9 300 
 - 8 - 4.4.6  Weatherability  
4.4.6.1 Accelerated weatherability  
After the 313B Fluorescent Ultraviolet Lamp Artificial Accelerated Ageing test, the colour 
changing degree of the electrolytic  colouring processed coatings should reach Level 1 as a 
minimum. The colour changing degree of the organic colouration processed coatings should 
reach at least Level 2. The exact chromaticism levels should be agreed through consultations 
between suppliers and buyers on the basis of different colours.  
4.4.6.2 Natural weatherability  
If the buyer requests the natural weatherability test be carried out, then the test conditions, 
checking and acceptance standard should be decided through consultations between th e supplier 
and buyer, and should be clearly indicated in the contract.  
4.4.7 Others  
4.4.7.1 If the buyer has special requests regarding the salt -spray corrosion resistance, wear 
resistance and weatherability of the anodic oxide coating, both the supplier a nd buyer may 
consult each other whilst referring to the requirements set out in GB/T 8013.1 -2007 in order to 
decide on the specific property requirements. The agreed test requirements should be clearly 
indicated in the contract.  
4.4.7.2 If the buyer reques ts further tests be carried out on other properties, the supplier and the 
buyer should refer to the requirements set out in GB/T 8013.1 -2007 and come to a decision 
through mutual consultation.  
4.5 Appearance quality  
No faults such as electrical burns, ano dic oxide coating falling off, or other problems that may 
affect the use of the anodised profiles should be apparent on the surface of the anodised profiles. 
On anodised profiles within 80mm from its end, no coating should be made on locality areas.  
5 Tes t methods  
5.1 Chemical composition  
The reference analysis of the chemical composition should be carried out in accordance with the 
methods set out in GB/T 20957.  
5.2 Mechanical properties  
The mechanical properties reference test should be carried out in a ccordance with the methods 
set out in GB/T 228 -2002. The elongation percentage after fracture should be measured in 
accordance with the rules in Section 11.1 of GB/T 228 -2002.  
5.3 Dimension deviation  
Dimension deviation should be measured according to the methods set out in GB 5237.1.  - 9 - 5.4 Properties of anodic oxide coatings  
5.4.1 Coating thickness  
5.4.1.1 According to the measuring principles specified in GB/T 8014.1, adopt the Eddy 
Current Test specified in GB/T 4957 or the Microscopical Method – Measureme nt of Coating 
Thickness specified in GB/T 6462. Arbitration determination should be performed according to 
GB/T 6462.  
5.4.1.2 For an explanation of the average thickness measurements and local thickness 
measurements of the anodic oxide coatings see also Ap pendix D to GB/T 8013.1 -2007.  
5.4.2 Quality of sealed anodic oxide coatings  
Adopt the phosphoric acid/chromic acid test with nitric acid pre -dip and carry out testing 
according to the test methods specified in GB/T 8753.2.  
5.4.3 Colour and chromaticism  
5.4.3.1 When comparing the test samples for colouring, all of the test samples should be placed 
on the same surface area. Test for the colour from the position at which it is vertical to the test 
samples, under scattered sunlight, along the anodised profile p rocessing direction.  
5.4.3.2 The scattering light source for the illumination should be located above and behind the 
observer carrying out the test. The direction of the light shining should be as follows: on the 
North of the equator, the light should be f rom North; on the South of the equator, the light 
should be from South.  
5.4.3.3 Other examination methods should be carried out according to the provisions stipulated 
in GB/T 14952.3.  
5.4.4 Properties of salt -spray corrosion resistance  
Carry out the CASS ( copper accelerated acetic acid salt spray test) test according to the methods 
specified in GB/T 12967.3. The grade of the corrosion results should be evaluated according to 
GB/T 6461. The protection level should correspond to one of the percentages of diff erent total 
defect areas shown in Table 4.  
 
Table 4  
Defect Area 
Ratio after 
Test, %  Protection 
Level (R)  Defect Area 
Ratio after Test, 
% Protection 
Level (R)  
None  10 >0.05 ~ 0.07  9.3 
0.02 9.8 >0.07 ~ 0.10  9 
>0.02 ~ 0.05  9.5 >0.10 ~ 0.25  8 
 - 10 - 5.4.5 Wear resistance  
Carry out the Falling -sand Abrasion Test according to the method specified in Appendix A to 
GB/T 8013.1 – 2007.  
5.4.6 Weatherability  
5.4.6.1 Accelerated weatherability  
Carry out 313B Fluorescent Ultraviolet Lamp Artificial Accelerated Ageing tests according to 
the method specified in GB/T 12967.4. Continuous shining light time should be 300 hours; the 
evaluation of the colour change degree of the anodic oxide coating should co nform to the 
provisions of GB/T 1766.  
5.4.6.2 Natural weatherability  
The test for natural weatherability should be carried out according to the provisions of GB/T 
9276.  
Note: among the atmospheric corrosion test stations in China, the only test station in which the 
atmospheric conditions are very near to the specified Florida Atmospheric in international 
Standards is the Qionghai Exposure Test Station.  
5.4.7 Others  
Tests on other properties should be performed according to test methods specified in GB/T 
8013.1 – 2007, or in accordance with the method agreed between the suppliers and the buyers.  
5.5 Appearance quality  
The examination for appearance quality should be carried out according to the methods 
specified in GB/T 14952.3.  
6 Inspection rules  
6.1 Examina tion and checking acceptance  
6.1.1 An examination of the anodised profiles should be carried out by the suppliers so as to 
ensure that the quality of the anodised profiles conform to the requirements set out in this Part, 
and the quality certificate should  also be completed by them.  
 
6.1.2 Buyers may carry out examinations that are specified in this Part regarding the anodised 
profiles they receive. If the examination results do not conform to the requirements set out in 
this Part or in the contract, and re sult in a disagreement related to appearance quality and 
dimension deviation, the buyer should submit the problems within one month of the date on 
which the anodised profiles were received. If the disagreement is related to other properties, 
then the buyer  may submit the problems within three months of receiving the anodised profiles, 
and both supplier and buyer should come to an agreement through consultation. If a negotiation 
is required, the suppliers should provide the agreed samples and the problem sho uld be resolved 
between the supplier and buyer together.  
6.2 Batch approval  
Anodised profiles should be submitted for approval and acceptance in batches. Anodised 
profiles with the same alloy grades, same supply states, same specifications, same grades of - 11 - coating thickness and the same surface treatments may constitute a batch. The quantity of each 
batch of anodised profiles is unrestricted.  
6.3 Inspection item  
Inspections for chemical composition, mechanical properties, dimension deviation, coating 
thickne ss, quality of the sealed anodic oxide coating, colour and chromaticism, as well as 
appearance quality should be carried out on every batch of anodised profiles. The inspection for 
salt-spray corrosion resistance properties, wear resistance and weatherabil ity are not usually 
carried out (the suppliers carry out these types of tests at least once a year), but the supplier 
should ensure these properties conform to the requirements set out in this Part. If the buyer 
requests that tests be carried out for salt -spray corrosion resistance properties, wear resistance 
and weatherability, then these requests should be clearly indicated in the contract.  
6.4 Sampling  
Anodised profile sampling procedures should be carried out in accordance with the provisions 
set out in  Table 5.  
 
Table 5  
Test Item  Sampling Rules  Requested 
Clause 
Number  The 
Clause 
Number 
of Test 
Method  
Chemical composition, 
mechanics properties, 
dimension deviation, 
appearance quality  According to the 
provisions of GB 5237.1  4.2, 
 4.3,  
4.5 5.1,  
5.2,  
5.3,  
5.5 
Coating thickness  Sampling procedures 
according to Table 6  4.4.1  5.4.1  
Quality of sealed anodic 
oxide coating  Take 2 sample pieces 
from each batch of 
anodised profiles, cut 
one test sample from 
each of the sample piece 
after 120 hours from the 
finished anodic oxide 
coating sealing  4.4.2  5.4.2  
Colour, chromaticism  According to provisions 
of GB/T 14952.3  4.4.3  5.4.3  
Salt-spray corrosion 
resistance properties,  
wear resistance  Take 2 sample pieces per 
test item from each batch 
of anodised profiles , take 
one test sample from 
each of the sample piece 
after 120 hours from the 
finished anodic oxide 
coating sealing  4.4.4,  
4.4.5  5.4.4,  
5.4.5  - 12 - Weatherability  Take 2 sample pieces 
from each batch of 
anodised profiles, take 
one test sample from 
each of the  sample piece 
after 120 hours from the 
finished anodic oxide 
coating sealing  4.4.6  5.4.6  
Others  According to the 
stipulations of GB/T 
8013.1 -2007 or 
according to the 
provisions agreed 
between the supplier and 
buyer  4.4.7  5.4.7  
 
6.5 Determination of the inspection results  
6.5.1 If the inspection for chemical composition does not meet the required standard, then the 
batch of anodised profiles is deemed as not qualified.  
 
6.5.2 If any one of the samples fails to meet the required standard during the inspect ion for 
mechanical properties, re -sampling should take place using double the original number of test 
samples from this batch of profiles (including the original unqualified sample). If the repeated 
test results qualify, then this batch of anodised profile s is deemed as qualified. If any of the 
repeated test results continues to fail to meet the required standard, then this batch of anodised 
profiles is deemed as not qualified.  
 
6.5.3 If dimension deviation does not meet the required standard, then the batc h of anodised 
profiles is deemed as not qualified. Individual testing is permitted, however, and the qualified 
pieces should be delivered.  
 
6.5.4 If the number of unqualified coating thickness exceeds the specified allowable unqualified 
upper limit numbers , as set out in Table 6, then the profiles should be re -sampled and a repeat 
test should be carried out using double the original number of test samples. If the test results of 
the repeated tests show the number of unqualified profiles to be less than doub le of the specified 
allowable unqualified upper limit number of profiles, then the entire batch of anodised profiles 
is deemed to be qualified; otherwise, they are deemed to be unqualified. The supplier may, 
however, carry out individual testing and the qu alified pieces should be delivered.  
 
Table 6  
Quantity Range in Each 
Batch  Random 
Sampling  Upper Limit of 
Unqualified 
Items  
1 ~ 10  Entire Batch  0 
11 ~ 200  10 1 
201 ~ 300  15 1 - 13 - 301 ~ 500  20 2 
501 ~ 800  30 3 
Over 800  40 4 
 
6.5.5 If the quality of either  the sealed anodic oxide coating, the property of salt -spray corrosion 
resistance, wear resistance, or weatherability fail to qualified, then the batch of anodised profiles 
is deemed as not qualified.  
 
6.5.6 If the colour and chromaticism do not meet the r equired standard, then the batch of 
anodised profiles should be deemed as not qualified. However, the suppliers may carry out 
individual testing, and the qualified pieces should be delivered.  
 
6.5.7 If the appearance of the samples does note meet the requ ired standard, then the anodised 
profile is deemed as not qualified.  
 
6.5.8 If any other properties fail to qualify, then the suppliers and the buyers must come to a 
mutual decision through consultations.  
7 Markings, packaging, transportation and storage  
7.1 With regard to the safeguarding of the anodic oxide coating, refer to Appendix A.  
 
7.2 The coating thickness grade, colour, corresponding tests results and corresponding contents 
should be indicated in the quality certificate, a specified in GB 5237.1.  
 
7.3 With regard to the temporary protective measures and transport during the transportation and 
installation of anodised profiles, refer to the corresponding provisions set out in Appendix B; for 
packaging boxes, markings, packages, transportation, stora ge and other contents, see the 
regulations specified in GB 5237.1.  
 
7.4 The label (or quality certificate) on the qualified anodised profiles should contain the 
following information:  
a) the name and address of the supplier;  
b) the examination stamp from departm ent of quality control of supplier;  
c) alloy grades and state;  
d) the name and specification of the profile;  
e) coating thickness grade and colour;  
f) production date or batch number;  
g) serial number of this Part;  
h) production license number and QS mark.  
8 The contents of  the contract (or order list)  
The contract (or the order list) to purchase listed materials in this Part should contain the following 
information:  
a) product names  
b) alloy grades, supply states;  
c) specifications;  
d) surface treatment methods, colours and coating thi ckness grades;  
e) accuracy grades of dimension allowable deviation;  - 14 - f) serial number of this Part;  
g) other special requests.  
 - 15 -  
Appendix A  
(Information Annex)  
Safeguard of the Anodic Oxide Coatings  
 
A1 If dirt sedimentation occurs on the surface of the profile, the  anodic oxide coatings will 
absorb the moisture content, which can cause the anodic oxide coatings to corrode, especially when 
the air contains sulphide. When the architecture anodised profiles are intended for long -term use, 
the surface of the anodic oxid e coatings must be cleaned occasionally, so as to extend the service 
life of the anodised profiles.  
 
A2 The cleaning cycle for regular anodic oxide coatings is generally every six months. The 
interval between cleaning may be decided on the basis of the con tamination levels of the 
environment in which the profile is used. When cleaning, attention should be paid not only to 
cleaning surface dirt, but also not to damage the anodic oxide coatings.  
 
A3 The cleaning methods for anodic oxide coatings may be decide d on the basis of the possible 
level of damage and scope of the anodic oxide coatings. Small work -pieces may be gently wiped 
clean using the hands, whereas for larger work -pieces, a method must be used to dissolve the sticky 
sediment. Dirt can generally be  cleaned off using a suitable lubricant or warm, mild soapy water, 
and a fibre brush may be used to clean any dust that may also stick to the surface. Sandpaper, steel 
wire brushes or other friction articles, or acid and alkali may not be used to clean ano dic oxide 
coatings, as they may damage the coatings. After cleaning treatments, the anodised profiles should 
be rinsed with clear water, especially places in which there are cracks or dirt, and a soft cloth 
moistened with ethyl alcohol should be used to wi pe the profile clean. Finally, use a high -quality 
wax to polish the anodic oxide coatings.  
 
 - 16 -  
Appendix B  
(Information Appendix)  
Temporary Safeguard Measures and Handling during the  
Transportation and Installation of Anodised Profiles  
 
B1 To prevent the an odic oxide coatings from being damaged during the transportation and 
installation of wrought aluminium alloy extruded profiles for architectural use, avoid friction and 
sliding between the anodised profiles.  
 
B2 To prevent polluted water, condensates, ceme nt and other dirt from coming into contact with 
the surfaces of the anodised profiles and causing corrosion during the transportation and storage of 
anodised profiles, a suitable container protecting the profiles should be used; certain varnishes or 
easily  removable wax or plastic films may also be used to protect the anodised profiles.  
 
B3 The installation of wrought aluminium alloy architecture anodised profiles should be carried 
out at a later stage of the building construction, and a label should be att ached to those which are 
delivered to the construction site, containing the following information: “To prevent the anodic 
oxide coatings of the anodised profiles from being damaged, special attention should be paid during 
transportation. When storing the a nodised profiles, do not allow the profiles to come into contact 
with contaminants such as cement or mortar, which will cause damage to the anodic oxide 
coatings”.