AS NZS 3750.7:2009 pdf free download – Paints for steel structures
2.5.1 General
When applied in accordance with the manufacturer’s recommended methods of application, the applied film shall be free from defects and show good leafing and brightness, when tested by the appropriate method (see Clauses 2.5.2 to 2.5.4).
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-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/NZS 1580.401.1, 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, it 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 h drying, and is examined in accordance with AS/NZS 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 45° angle on an exposure rack complying with AS/NZS 1580.457.1, at a test site with climatic conditions that comply with AS/NZS 2312 for a Category C: Medium environment, the paint system shall meet the acceptance rating requirements of Table 2.
2.6.5 Resistance to water
When a panel coated as described in Appendix E is tested in accordance with AS/NZS 1580.455.1 using an immersion time of 24 h, the test panel shall exhibit no sign of blistering, wrinkling or other defects. The test panel shall produce a scratch resistance of not less than 600 g as determined using AS/NZS 1580.403.1 and an approximate colour match between the immersed and unimmersed areas of the panel.
3.1 PACKAGING
The product shall be packaged in sound, clean and dry containers constructed of a material that is inert to the contents and sufficiently robust to withstand normal conditions of handling and storage without rupture or leakage. The container shall be capable of being readily resealed so as to be gastight. Containers shall comply with statutory requirements relevant to the transport and storage of flammable liquids as specified in the current edition of the Australian Code for the Transport of Dangerous Goods by Road and Rail (ADG Code).
NOTES: 1 AS 2854 and AS 2905 refer to suitable containers for these products.
2 In New Zealand the ADG Code does not apply. In New Zealand, refer to NZS 5433.