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Explosion-Proof Annular Blowout Preventer (BOP) for Oil & Gas Well Control Drilling. Strictly manufactured in accordance with API 6A international standards, stable high-pressure sealing performance for oil & gas well control operations. Integrated forging steel main body with anti-corrosion red coating, strong pressure resistance and long service life under harsh downhole conditions. Modular bolted connection structure, easy disassembly, maintenance and matching with various wellhead flanges & BOP assemblies.