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Secondary members:
High strength MS or galvanized steel Z or C shape purlin available in 1.6mm, l.75mm, 2.0mm and 2 5mm thickness, conforming to ASTM A607 grade 50 (or equivalent). Secondary members are painted with a minimum of 35 microns (Di-T) of red oxide primer or galvanized or any other paint system as per customer's choice
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