Manufacturing
VALVE MANUFACTURING
Scaled for High Output, Certified for Global Markets
As one of China’s largest valve producers, CTGV covers over 100 acres, including a 40-acre advanced industrial park. Our annual capacity exceeds 20,000 tons, supported by 500+ staff, including senior engineers and certified specialists. We adopt advanced 6S production planning management to ensure smoother, more efficient operations. CTGV is fully certified—ISO, CE, API and TS—ensuring all products meet global standards for quality, safety, and environmental responsibility.
Precision Built at Scale
CTGV invests heavily in high-end equipment, with over 300 production machines and 100 testing instruments. From CNC centers to 5-meter vertical lathes, our tools drive precision, efficiency, and scale.
Partner with CTGV to Build Valves
— Fast, Smooth, Reliable
PRODUCTION PROCESS
9 Steps to Zero Compromise
Our vertically integrated workflow spans raw material control, high-precision machining, and full-process testing. Powered by Industrial 4.0 systems and 6S lean management, we deliver valves that perform, last, and meet global standards.
Raw Material Preparation
We test duplex steel, stainless steel, and alloys for composition and strength, ensuring corrosion resistance and long life, reducing failures and downtime in demanding applications.
Casting
Using lost foam and sand casting with simulation control, we produce dense, defect-free blanks, cutting machining time and ensuring strength under extreme pressure and temperature.
Machining
Five-axis CNCs maintain ±0.01mm tolerance and Ra0.4 finish, guaranteeing leak-free sealing and consistent valve function in high-pressure, high-cycle conditions.
Surface Treatment
We apply HVOF, nitriding, or PVD coatings to seal faces and stems, improving wear and corrosion resistance for harsh environments like polysilicon or flue gas desulfurization.
Assembly
Modular assembly with torque tools and vacuum cleaning ensures precise fit and sealing integrity, reducing on-site errors and installation time, ideal for remote or time-sensitive projects.
Pressure Testing
Class 150–2500LB valves are helium leak-tested with 30+ minute hold times, ensuring safe operation under full load without post-installation failures or shutdowns.
Painting
Electrostatic epoxy coating 80–120μm thick resists 1000+ hours of salt spray, ensuring long-term corrosion resistance and clean appearance in offshore and chemical sites.
Packaging & Delivery
Custom anti-rust, anti-shock packaging and wood crates prevent transit damage, supporting long-haul exports and remote project reliability with zero compromise on quality.
