AN IMPROVED SEAL BETWEEN PIPES
A pipe joint comprises a pin having a male screw-threaded portion and a box having a complementary screw-threaded portion. The threaded portions of the pin and box inter-engage along the greater part of the axial length of the threaded portions, the male thread extending to a male stop shoulder adja...
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Format: | Patent |
Sprache: | eng ; fre ; ger |
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