API Type Cu and cUL Solid Casing Bushing with Insert Bowl
Nantong Strong Petroleum Technology Co., Ltd.
API Pin Drive Roller Kelly Bushing for Wellhead 17-1/2 Rotary Table
Nantong Strong Petroleum Technology Co., Ltd.
API Spec 8A National Nov Varco Type Kelly Roller Spinner 5 1/4"
Shandong Seaco Machinery Equipment Co., Ltd.
API 7K Roller Kelly Bushing Used for 171/2" - 49 1/2" Rotary Table
Nantong Strong Petroleum Technology Co., Ltd.
Premium Quality API Spec 7K Roller Kelly Bushing for Rotary Drilling Rigs
Sinotai Petroleum Equipment Co., Ltd