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He Bei Cheng An Babel Casting Co.，Ltd
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Communication manhole covers
Manhole covers for cement use
Water-draining lattices from iron cast iron
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Ductile Cast Iron Manhole Cover
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Technical requirements for installation of cast iron well cover
May. 22, 2020
Cast iron manhole cover is a kind of nodular cast iron, nodular cast iron by spheroidization and inoculation by spherical graphite
Size selection of Rain Olivier
May. 12, 2020
The direction of the flat steel is bearing (supporting) direction, and the length of the flat bar is L according to the width of the groove (well).
Manhole cover installation notes
Apr. 29, 2020
The brick masonry construction of the manhole covers shall be determined according to the size of the manhole cover designed by the Design Institute
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