The ZSH(DR)6D series pipeline ball valve is designed for fluid isolation in long-distance pipelines and oil/gas transportation systems. It uses a forged high-strength body with fixed-ball or floating-ball construction, manual/electric/pneumatic actuation, and temperature- and pressure-resistant seats. The ball is chrome-plated or nitrided/hardened, enabling zero-leakage sealing in low-temperature and high-pressure service.