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CAST IRON BRANCH FOR DUCT BANKS,DUCT BANK AND ANTICORROSIVE PROTECTION OF SAID BRANCH
CAST IRON BRANCH FOR DUCT BANKS,DUCT BANK AND ANTICORROSIVE PROTECTION OF SAID BRANCH
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机译:公营银行的铸铁分支,公立银行的分支和防腐蚀保护
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摘要
A cast-iron pipework element adapted to be buried has an external coating made up of an inner layer of zinc, a porous intermediate layer of zinc/aluminium alloy containing from 5 to 55% of aluminium, and a porous outer layer, or pore-blocking layer, comprising an organic binder, especially a water-based paint, a bitumen varnish or an epoxy resin.
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