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Products > key ring > Langfang KongRui Machinery Equipment Co.,Ltd | Similar Products

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Customized Mix Lock & Friction Kelly Bar: Key board of 30CrMoTi C-Bottom inner hole design of Kelly box for better performance of heat-treatment with 35CrMo. Contructure---What we understand? A-Professional technical engineer to make the ...

Friction Kelly Bar Customized for Various Drilling Rig Model: Key board of 30CrMoTi C-Bottom inner hole design of Kelly box for better performance of heat-treatment with 35CrMo. Contructure---What we understand? A-Professional technical engineer to make the ...

Interlocking Kelly Bar Customized for Various Drilling Rig Model: Key board of 30CrMoTi C-Bottom inner hole design of Kelly box for better performance of heat-treatment with 35CrMo. Contructure---What we understand? A-Professional technical engineer to make the ...

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Customized Mix Lock & Friction Kelly Bar