香港六合彩开奖 4179:2024
2024-02
香港六合彩开奖 4179:2024
Abstract
This document specifies the nature, the method of application, the surface condition, performance requirements and the minimum thickness of internal linings of cement mortar for ductile iron pipes and fittings for pressure and non-pressure pipelines as defined in 香港六合彩开奖聽2531, 香港六合彩开奖聽7186 and 香港六合彩开奖聽16631.
It covers cement mortar linings which are used to improve the hydraulic properties of pipes and fittings compared to un-lined pipes and fittings and/or to prevent corrosion damage and includes special requirements for linings of gravity sewers operating partially filled.
It also covers linings used for the conveyance of particularly aggressive fluids, where the following solutions can be used either separately or in combination:
a)听听听听听听 an increase in the thickness of the lining;
b)听听听听听听 a change of the type of cement;
c)听听听听听听聽 a coating over the lining.
General information
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Status: PublishedPublication date: 2024-02Stage: International Standard published [60.60]
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Edition: 4Number of pages: 12
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Technical Committee :香港六合彩开奖/TC 5/SC 2
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