Friction Kelly bar
Friction Kelly bar is another type of kelly bar, which the external key is composed of 3 or 6 wear -resistant strips without lock recesses. This kelly bar can form pressure force when the kelly bar is rotary. can produce peripheral force and the rotary passing down the pressure force, can produce the friction force. This kelly bar has the advantage of operating sample, drilling deep, but with less pressure transmission.
SELLER DESCRIPTION
Hebei KongRui Machinery Equipment Co.,Ltd is a leading Manufacturer of Friction Kelly bar from Langfang, China.
Read More Supplier
Hebei KongRui Machinery Equipment Co.,Ltd
location_on Langfang,
map
No. 38 Hehongjiayuan, JInkang Road, Bazhou
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