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GB964668A
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A method for the manufacture of concrete pipes having prestressed reinforcement
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ES265015A1
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A method for the manufacture of pipes of concrete having prestressed longitudinal and annular reinforcements
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DE1143141B
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Process for the production of concrete pipes with prestressed longitudinal and ring reinforcement
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US3107158A
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Method for the manufacture of pipes of concrete having prestressed longitudinal and annular reinforcements
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GB860325A
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A device for use in the manufacture of spigot and socket pipes of reinforced concrete
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DE1123965B
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Device on casting molds for the production of socket forms from concrete
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GB758319A
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Tank for the storage of liquids in galleries or cavities made in rock
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GB660335A
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Improvements in and relating to storage tanks for liquid fuel and the like
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GB664854A
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A method and an equipment for the making of piles of concrete in situ
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US2333315A
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Construction of underground tanks for storing liquid fuels and other fluids
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GB531296A
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Improvements in plants for storing oils and other liquids in underground cavities
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CA698292A
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Method for the manufacture of concrete pipes having prestressed reinforcement
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CA415229A
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Oil underground storing plant
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CA403396A
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Underground fuel tank
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CA576924A
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System for the storage of liquids in galleries or cavities dug in the rock
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CA664035A
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Method for the manufacture of prestressed concrete pipes
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