Under Reaming Systems (Extend-Shrink Wing Bit)

The design of the E.S .wing Bit enables the Guide Bit to perform most of the drilling directly while the expanded Bit Heads perform the reaming, this minimizes loss of hammer energy and maintains a high drilling efficiency. Since E.S Wing.Bit Heads expand and retract concentrically, they will drill and maintain a round hole.

The E.S.Wing Bit system has no tendency to wander, or to produce an offset. this feature assures a straight, round hole, equivalent to that drilled with a conventional bit .After drilling to the required depth, the E.S. Wing Bit Heads are retracted by rotating in the reverse direction when the Bit body is lifted.

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Zhuzhou Zhongge Cemented Carbide Co., Ltd.

ADDRESS：No. 1099, the Pearl River North Road, Tianyuan District, Zhuzhou, Hunan

Phone：0086-13873336879

Tel：0086-731-22588953

Email：info@zzgloborx.com
Whatsapp/Wechat：0086+13873336879