Product name: 165mm Overburden Symmetric Casing Drilling System Ring Bit Without Casing Shoe For Loose Ground Outer diameter casing pipe: 165mm This overburden drilling systems are designed to use ring bit ... Подробнее
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Product name: 168mm Symmetric loose ground casing drilling ringbit without casing shoe Outer diameter casing pipe: 168mm This overburden drilling systems are designed to use ring bit which is not connected to ... Подробнее
Product name: 139mm recycle ring bit casing drilling system for engineering Product category: Overburden casing ring bit Matched hammer: Hammer DHD340 Matched casing pipe OD: 139mm Recycle ring bit casing ... Подробнее
Product name: OD133mm MRING Overburden Symmetric Casing Drill bit With Ring Bit For Soft Rock formation Product category: Overburden casing drilling system The system consists of a driver bit, a ring, and ... Подробнее