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Hydraulic slips for drill pipe——XDYW 2014/1/23 11:25:59 ulic pressure: 6.3MPa;- effective length of gripping: 420mm;
- effective area of gripping: 1008cm2;
- the stroke of lifting cylinder: 420mm, the stroke of rotating cylinder: 300mm;
- appropriate specification of drill pipe: 5″ and 5½″;
- key structure dimensions：back taper of slip body: 1:3±1.5mm/m, deviation angle of pedion: 9º27´45″±2´30″;
- maximum rated loading: 2250kN;
- the distance between fixed vertical column and well head: 1800mm.
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