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Products > modifiers > Hebei KongRui Machinery Equipment Co.,Ltd | Similar Products

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Friction Kelly Bar: KR Drilling Kelly bar Info Friction Kelly bar applied to the soft and mud formation layer. Six -ribs makes the whole set Kelly bar light weight,high stength and linearity of the single pipe, the ...

Interlocking Kelly Bar: modified small drilling rig. Materials & Technology 1st-2nd pipe Materials: 27SiMn or 35CrMo undergone quenched-tempered heat treatment.3rd-5th pipe Materials: Q345B undergone quenched-tempered heat ...

Full Lock Kelly Bar: KR Drilling Kelly bar Info Usually full lock kelly bar is composed of three weld-on ribs continuous concave and convex keys. It especillay for hard ground and frozen oil formation layer.When drilling ...

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Friction Kelly Bar