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NZS 4405 PDF
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Helical lock-seam corrugated steel pipes
| Published by | Publication Date | Number of Pages |
| NZS | 12/31/1986 | 9 |
NZS 4405 – Helical lock-seam corrugated steel pipes
Specifies requirements for full circular shape corrugated steel pipes manufactured from galvanized steel strip. The pipe is formed by a continuous helical lock-seam, and only pipes in which the direction of the corrugations run helically to the longitudinal axis of the pipe are covered. Requirements for base metal, lock-seam strength, coupling bands, perforations, protective coating and workmanship are specified.Identical to AS 1761:1985 with modifications for New Zealand.
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