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Tapping assembly
| Diamond Glossary (алмазы и бриллианты - глоссарий терминологии) |
A mechanical device consisting of a short piece of casing cemented in the collar of a borehole at the upper end of which is affixed a gate or large plug valve followed by a rod stuffing box. utilizing this assembly, underground drilling can be accomplished safely in areas of high hydrostatic pressure.
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Assembiy, английский
Assembjy, английский
Assemblé, немецкий
Doublierte und gezwirnte schappseide.
Assemblage, английский
Assemblage, французский
Assemblage a clavettes, французский
Assemblage a rainure et languette, французский
Assemblage boulonne, французский
Assemblage colle, французский
Assemblage de bati et de porte, французский
Assemblage de chantier, французский
Assemblage deformable, французский
Assemblage des bois par entaille, французский
Assemblage des bois par enture, французский
Assemblage des poutres libre, французский
Assemblage des poutres rigide, французский
Assemblage des sous - ensembles, французский
Assemblage flexible, французский
Assemblage i., английский
Сборка; монтаж 2. узел (напр., станка); блок
Assemblage mobile, французский
Assemblage of orders, английский
Mechanical, английский
Underground, английский
- Подземный
- Below grade or ground level, as underground drain lines or cables.
Hydrostatic, английский
Гидростатический
Accomplish, английский
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Casing clamp, английский
A mechanical device designed to facilitate the hoisting or suspension of casing in a borehole. made by forming a half circle in a heavy steel bar. when bolted together, in pairs, the bars fit around the outside and tightly grip the casing. size of clamp is determined by outside diameter of the casing to be handled.
Scratch hardness, английский
- A measure used in testing the ability of a mineral or metal to resist being scratched by another mineral or metal. see abrasion hardness, hardness scale.
- The hardness of a metal determined by the width of a scratch made by a cutting point drawn across the surface under a given pressure.
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