The swivels are necessary hoisting tools for hanging drill pipe and jointing hose in well repairing. They have type SL35, SL60, Type SL Swivels The swivels are necessary hoisting tools for hanging drill pipe and jointing hosein well repairing. They have type SL35, SL60, SL90 and SL135. Swivel
... layer easy to collapse, so firstly injecting SL-669 completely mixing & solidified with the sand ... form the elastic colloid, avoiding to collapse. SL-669 is single-liquid polyurethane hydrophilicity foaming ... requirements of construction to leak stoppage. Besides, SL-669 forms the colloid when going through water ... function of leak stoppage & filling cracks. SL-669 is mixed with water at the proportion ...
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