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China
Contact Person Mr. smith
69 ChaoYang Road, Beijing, Beijing
Kellys are made from ***5H modified alloy steel in accordance with API Spec.7 latest edition, which are quenched and tempered along full length. Size Length m Upper box connection Lower pin connection I.D. Driving section mm in Type(LH) O.D. Thread O.D. Cross flat For square kelly Cross corner for hexa kelly Std. optional. Std. optional. *3.5 2 1/2 *2.*9 6 5/8 REG 4 1/2 REG **6.8 **6.0 NC*6 *5.7 *1.8 *3.5 *3.3 *6.2 3 *2.*9 6 5/8 REG 4 1/2 REG **6.8 **6.0 NC*1 **4.8 *4.4 *6.2 **0.0 *5.7 *8.9 3 1/2 *2.*9 6 5/8 REG 4 1/2 REG **6.8 **6.0 NC*8 **0.6 *7.2 *8.9 **5.1 **0.8 **8.0 4 1/4 *2.9 6 5/8 REG **6.8 **6.0 NC*6 **8.8 *1.4 **8.0 **1.3 **2.2 6 5/8 REG **6.8 **6.0 NC*0 **1.9 *1.4 **8.0 **1.3 **2.2 **3.4 5 1/4 *2.9 6 5/8 REG **6.8 5 1/2 FH **7.8 *2.6 **3.3 **5.4 **1.6 6 5/8 REG **6.8 NC*6 **7.8 *2.6 **3.3 **5.4 **1.6
