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DE3047968A1
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Trenchless forward pressing pipe laying system - has negotiable space beside conveyor rails under boom cage in advance pipe
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DE3012413A1
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Hydraulic horizontal pipe or cable laying press - has independently controlled rotary drive attached to pressure bridge end
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DE2817017A1
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Horizontal drilling unit for advancing underground pipes - has paired pistons and cylinders, worm-gear and drive shafts in one plane
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DE2706940A1
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Hydraulic drilling head coupling - using two wedge keys applied by power ram mould ball bearing
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DE2621701A1
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Drill tube drive mechanism - applying spring loaded jaws in box section guides by wedges on ring acting on barrel shaped rollers
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DE2617554A1
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Plug in connection for stepped flange pipes - has radial fixing elements secured by hammer head bolts counterbored in inner flange
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DE1231634B
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Hydraulic device for drilling down the casing in boreholes
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DE1246638B
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Connection for sheet metal pipes, especially for well construction and pile foundations
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DE1237036B
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Plug connection for casing pipes, especially for well construction and pile foundations
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DE1088896B
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Drill rod interception device
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DE1152980B
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Hydraulic press for heavy drawing work in deep drilling
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DE1131617B
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Drive device for rotating the riser pipe of a deep rod pump
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DE1005015B
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Drill rod driver
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