The BOP is designed and manufactured according to the latest version of API Spec.16A. The ram BOP has compact size and reliable seal and is easy to operate. It’s widely used in land and offshore platform. The ram,which has pressure reinforcement seal, is able to seal the drill tool effectively and rapidly and is able to seal even after the hydraulic control pressure disappears. Hydraulic drive wedge locking device can seal the drill tool through oil pressure and then be automatically locked through wedge. To open the ram, the ram can be unlocked through oil pressure and then be opened. The opening and closing of the ram BOP, the change of rams are implemented by hydraulic control. The ram and sealing elements can be exchanged in the field, saving a lot of time.