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IAPMO IGC 270-2008
Longitudinally welded hot-dip galvanized steel pipe and fittings for wastewater systems
This standard applies to longitudinally welded hot-dip galvanized steel pipe and fittingsfor wastewater systems and covers general requirements and performance tests forsuch products, in addition to method of markings and identification.Components within this system comprise of longitudinally welded hot-dip galvanizedsteel pipe and fittings having spigot and socket end connections usually operating undergravity or at a low head of pressure.
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International Association of Plumbing and Mechanical Officials [iapmo]