旋转钻管卡瓦
The Slips are designed and manufactured according to API Spec 7K, equivalent to Varco/BJ Type
●SD Series-Rotary Slip for Drill Pipe & Tubing
Model: SDS, SDML, SDXL Size: 2 3/8" to 5 1/2"
●DCS Series for Drill Collar
Model: DCS-S, DCS-R, DCS-L Size: 3" to 14"
●CMS-XL for Casing
Size: 4 1/2" to 30"