AS NZS 3750.7:2009 pdf free download – Paints for steel structures Part 7: Aluminium paint

AS NZS 3750.7:2009 pdf free download – Paints for steel structures Part 7: Aluminium paint.
2.5.2 Brushing
When applied to a vertical test panel (see Clause 2.3) in accordance with AS/NZS 1580.205.1, the test paint shall exhibit satisfactory brushing properties and be free from visible defects.
2.5.3 Rolling
When applied to a vertical test panel (see Clause 2.3) in accordance with AS/NZS 1580.205.3, the test paint shall exhibit satisfactory rolling properties and be free from visible defects.
2.5.4 Spraying
When thinned in accordance with the manufacturer’s instructions, and applied to a vertical test panel (see Clause 2.3) in accordance with AS/NZS 1580.205.2, the test paint shall exhibit good spraying properties.
2.6 APPLIED FILM
2.6.1 Surface-dr time
When the test paint has been applied to a steel test panel at the appropriate spreading rate and is tested in accordance with AS/N/S 1580.40 1.1. it shall have a surface-dry time not exceeding 6 h.
2.6.2 hard-dry time
When the test paint has been applied to a steel test panel at the appropriate spreading rate and is tested in accordance with AS 1580.401.5, ii shall have a hard-dry time not exceeding 16 h.
2.6.3 Recoating properties
When a single-coated steel test panel is recoated after 24 Ii drying. and is examined in accordance with AS/N/S 1580.404.1. there shall be no defects in the underlying test film during or after overcoating. When examined, after drying for 24 h, the film shall be of uniform appearance and colour and shall be free from defects.
2.6.4 Resistance to weathering
When test panels coated in accordance with Appendix E are continuously exposed for 48 months, at a 450 angle on an exposure rack complying with AS/NZS 1580.457.1, at a test site with climatic conditions that comply with AS/N/S 2312 for a Category C: Medium environment, the paint system shall meet the acceptance rating requirements of Table 2.
8.2 MANUFACTURER’S TEChNICAL DATA
The manufacturer’s technical data sheets and labelling instructions should be studied before the product is used.
83 SAFETY PRECAUTIONS
Aluminium paints may Contain volatile flammable solvents. It is necessary to:
(a) Read and follow the manufacturer’s material safety data sheets for the product.
(b) Protect the eyes and skin from contact with these paints by wearing suitable protective clothing and equipment.
(c) Provide respiratory protection in confined spaces.
(d) Ensure that proper procedures are observed in relation to the handling and storage of this flammable material.
(e) Exercise caution when opening the can because of the possibility of pressure buildup.
NOTE: All relevant statutory regulations need to be observed.
84 APPLICATION AND USE
Paint covered by this specification is intended for use as a finish coat on suitably prepared steel exposed to industrial or marine environments. It is primarily intended for spray application to ensure good leafing and brightness.
This paint is often specified as the top coat for conventionally primed tank farm, silo and roofing steelwork because the aluminium flake pigment does not chalk or significantly change colour.
Some paints may also show heat resistance to 200°C, thus they are also used on suitably primed steam pipes. boiler fronts and furnace structures.
When stored under cover in unopened containers in industrial situations, the paints or components should have a storage life of at least 12 months from date of manufacture.
Co,itainers should preferably he stored out of direct sunlight away From heat and water.
Because the paints may contain flammable solvents, they should not he stored near naked flame or other sources of ignition.