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AS/NZS 2041.4:2010 Buried corrugated metal structures Helically formed sinusoidal pipes
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Sets out requirements for the manufacture of full circular shape corrugated sinusoidal metal pipes manufactured from galvanized steel, polymer-coated steel, aluminized steel and aluminium strip using a continuous helical lock-seam. Properties are given for design and tables of maximum and minimum cover are included for structure selection.