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Hatari
Galvanised Steel Pipe: Steel Tube Pickled, Fluxed and Dipped in Molten Zinc
Galvanised pipe is steel tube with a coat of zinc. Pickle the tube in acid to take off the mill scale, rinse it, coat it with zinc ammonium chloride flux and let it dry, then dip it in molten zinc until it is as hot as the bath, lift it out and quench it. Dipping iron in zinc goes back to 1742; Sorel patented the acid and flux in 1836.
The picture: our diagram of the four tanks.
Juu
Half a day
Maudhui hatari
Blueprint hii ina taratibu za hatari. Ingia na uwashe maudhui ya hatari katika mipangilio ya akaunti yako ili kuona maagizo ya hatua kwa hatua.
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Blueprint zinazohusiana
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