Manufacturing

CLDG Forging Power into Every Valve

Forging Strength with Smart Efficiency

As a ISO-certified valve manufacturer, we bring 20+ years of expertise in designing and producing high-performance valves. Embracing Industrial 4.0, we integrate intelligent manufacturing systems to deliver high-quality forged valve solutions.

Powered by Industry 4.0

Our one-stop production process—from design and forging to machining, assembly, and packaging—streamlines the entire supply chain, reducing middleman costs and lowering management expenses to meet diverse industry needs.

Powering Efficiency with Advanced Machinery

Our advanced facility features automated production lines and an MES system, enabling a capacity of 170,000 valve sets annually. With hundreds of high-precision CNC machines and automated systems for molding, casting, assembly, painting, and storage, we integrate ERP, MES, and QMS to optimize space and reduce labor costs, ensuring efficient production.

CLDG Valve Crafting Process

Raw Material Selection and Stress Relief

We carefully select high-quality raw materials and perform impurity removal and stress-relief treatments to ensure material purity and uniformity, reducing the risk of forging cracks and enhancing valve structural stability.

Impurity Control

Stress Minimization

Precision Die Forging for Structural Integrity

Using high-pressure die forging, we shape complex valve bodies in one step, minimizing welding processes, improving overall density, and increasing compressive strength to reduce leakage risks.

One-Shot Forging

Density Boost

Optimized Heat Treatment for Durability

Through quenching and tempering, we adjust the material's microstructure to balance hardness and toughness, significantly improving wear resistance and fatigue life to handle extreme temperatures and pressures.

Hardness Balance

Fatigue Resistance

CNC Precision Machining for Tight Tolerances

We use five-axis CNC machines to precisely machine critical areas like sealing surfaces and threads, controlling tolerances within ±0.01mm to ensure tight seals, improve assembly precision, and extend maintenance-free valve life.

±0.01mm Tolerance

Thread Accuracy

Surface Coating and Corrosion Protection

With multi-layer sandblasting and phosphating followed by corrosion-resistant coating, we create a dense passivation layer that greatly extends the valve's surface life, making it resistant to acid, alkali, and salt spray corrosion in outdoor environments.

Passivation Layer

Salt-Resistant

Comprehensive Assembly and Leak Testing

Using torque-controlled assembly and helium mass spectrometry for leak testing, we eliminate assembly errors that could cause jamming or internal leakage, ensuring compliance with API 598 standards at delivery.

Helium Detection

API Compliant

Cleanroom Packaging and Transport Protection

After cleaning in a dust-free workshop, we use anti-rust film and reinforced wooden crates with humidity indicators to prevent corrosion during transport, ensuring valves are ready for installation and reducing on-site handling costs.

Rust Prevention

Damage-Free