"QL" Type Composite Bonnet Hydraulic Locking Ram Blowout Preventer for Wellhead Control The QL Type Composite Bonnet Hydraulic Locking Ram BOP is an upgraded wellhead pressure control device manufactured strictly in accordance with API 16A standards, specially optimized for safe and efficient oil and gas well drilling and workover operations. Featuring a unique composite bonnet boltless structure, it abandons traditional cumbersome bolt connection designs, enabling rapid