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Drill Pipe Protector 
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As it is used to prevents the metal to metal friction between casing and drill pipes, limits drill string bending and reduces vibration caused by drill string rotation.
FEATURES AND BENEFITS
1. Positive protection against casing and riser wear during drilling operations. 2. The Significant torque reduction created by our fluid bearing design, with wear reduction around 20%, torque reduction around 30%. And field-proven for improved ROP. 3. Compatible with most oil, synthetic- and water-based drilling fluids, having excellent acid/alkali resistance; 4. The wear sleeve is adopted with enhanced TFE material, with temperature resistance up to 200 ℃, 5. The high wear resistance enable more than 500 hours service time; 6. The product is simple structured, easy for onsite installation, directly mounting it on the drill pipe. Installation time: less than 1 minute. 7. On/off-site technical support and direction.
ZRFK215/244
OD of SLEEVE(mm) 215
APPLICABLE CASING SIZE(mm) 244.5
APPLICABLE DRILL PIPE SIZE 5 1/2''
OD of RETAINER(mm) 184
ZRFK206/244
OD of SLEEVE(mm) 206
APPLICABLE CASING SIZE(mm) 244.5
APPLICABLE DRILL PIPE SIZE 5''
OD of RETAINER(mm) 165
ZRFK158/194
OD of SLEEVE(mm) 158
APPLICABLE CASING SIZE(mm) 194
APPLICABLE DRILL PIPE SIZE 4''
OD of RETAINER(mm) 140
ZRFK146/178 OD of SLEEVE(mm) 146 APPLICABLE CASING SIZE(mm) 177.8 APPLICABLE DRILL PIPE SIZE 4'' OD of RETAINER(mm) 133 ZRFK146/178 OD of SLEEVE(mm) 146 APPLICABLE CASING SIZE(mm) 177.8 APPLICABLE DRILL PIPE SIZE 3 1/2'' OD of RETAINER(mm) 121
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