Corrosion Resistant Wellhead Valve Gate - High-Quality China Suppliers & Factory for Oilfield Applications
Product Description
Slab valve gates serve as the core sealing and switching components dedicated to slab gate valves, which are extensively applied in critical oil & gas extraction scenarios including oilfield wellhead devices, Christmas trees, drilling and production systems, pipeline transmission equipment, and high-pressure fluid control units.
Adopting high-quality alloy steel as the base material, our valve gates undergo strict forging, precision CNC machining and advanced surface treatment processes. Equipped with professional HVOF (High Velocity Oxygen Fuel) thermal spray coating technology, they form a high-density, high-hardness protective layer on the surface.
These valve gates are specially designed to adapt to harsh working conditions such as ultra-high pressure, abrasive corrosion, frequent switching and extreme temperature differences. They maintain stable sealing performance and structural integrity during long-term operation, effectively ensuring the safety, continuity and efficiency of oil and gas production and transportation systems, and are ideal matching parts for high-performance slab gate valves.
Product Specifications
| Type | Slab Valve Gate |
| Nominal Diameter | 1-13/16" / 2-1/16" / 2-9/16" / 3-1/16" / 3-1/8" / 4-1/16" / 5-1/8" / 6-5/8" / 7-1/16" / 9" / 11" / 13-5/8" |
| Working Pressure | 2000psi(2K) / 3000psi(3K) / 5000psi(5K) / 10000psi(10K) / 15000psi(15K) / 20000psi(20K) |
| Media | Crude oil, natural gas, oil-gas mixture, corrosive petroleum fluid, high-pressure water |
| Material | High-strength alloy steel (4130, 4140), stainless steel (304, 316), customized alloy materials available |
| Working Temperature | -46℃ — +121℃ |
| Hardness | HRC75 |
| Bonding Strength | ≥70MPa |
| Porosity | <1% |
| Surface Treatment | Supersonic spraying of cobalt-bonded tungsten carbide (WC/Co) / cobalt-chromium-bonded tungsten carbide (WC/CoCr) / cobalt-chromium tungsten alloy (Stellite 20#/NiCr) / nickel-chromium-bonded chromium carbide (Cr₃C₂/NiCr) / nickel-based alloy (Ni60/Ni55) / nickel-based tungsten carbide (WC/Ni) |
| Coating Thickness | 0.03–0.5mm (Customizable) |
| Processing Technology | Precision forging + CNC precision machining + HVOF coating + Fine grinding |
| Machining Tolerance | Comply with international industrial precision standards, ensuring perfect assembly with valve bodies |
| Matching Valves | Specialized for slab gate valves, wellhead valves, oil extraction tree valves and pipeline control valves |
Product Features
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1. High-Strength Base Material
Selected high-quality alloy steel with excellent tensile strength, impact resistance and structural stability, not easy to deform under high pressure.
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2. Premium HVOF Coating
Advanced thermal spray technology endows the surface with ultra-high hardness, outstanding wear resistance and corrosion resistance, far superior to traditional surface treatment.
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3. Precision Machining Accuracy
CNC precision machining and fine grinding ensure flatness, smoothness and dimensional accuracy, achieving zero-leakage sealing effect.
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4. Extreme Working Condition Adaptability
Perfectly resist high pressure, abrasive wear, chemical corrosion and frequent switching, suitable for harsh oilfield and petrochemical environments.
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5. Long Service Life
Excellent wear resistance and stability greatly reduce replacement frequency, lower equipment maintenance costs and improve operational efficiency.
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6. Perfect Sealing Performance
Optimized structural design and high-precision surface guarantee stable and reliable sealing during long-term use.
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7. Customized Service
Support customized production of various sizes, materials and coatings according to customer drawings, samples and working condition requirements.
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8. Strict Quality Control
Each product undergoes professional inspection of dimensions, hardness, coating adhesion and sealing performance to ensure stable and reliable quality.
Product Packaging
📦 Standard Export Packaging
Inner: Anti-rust protective bag
Outer: Fumigation-free plywood box or carton
Shockproof, damp-proof and rust-resistant, guaranteeing safe sea transportation.
Product Transportation
🚢 Logistics & Shipping
- ● Sea Freight
- ● Land & Rail Transportation
Frequently Asked Questions (FAQ)
QWhat is a slab valve gate and where is it used?
A slab valve gate is the core sealing and switching component inside a slab gate valve. It is widely used in oilfield wellhead devices, Christmas trees, drilling and production systems, pipeline transmission equipment, and high-pressure fluid control units in the oil & gas industry.
QWhat surface treatment technology is applied to the valve gate?
Our slab valve gates use advanced HVOF (High Velocity Oxygen Fuel) thermal spray coating technology. Available coating materials include WC/Co, WC/CoCr, Stellite 20#/NiCr, Cr₃C₂/NiCr, Ni60/Ni55, and WC/Ni, forming a high-density, high-hardness protective layer with a hardness of up to HRC75 and porosity below 1%.
QWhat pressure ratings and sizes are available?
The valve gates are available in working pressures from 2,000 psi (2K) up to 20,000 psi (20K), and in nominal diameters ranging from 1-13/16" to 13-5/8". Custom sizes can also be produced based on customer drawings or samples.
QCan the valve gate be customized for specific working conditions?
Yes. We offer full customization services including different sizes, base materials (alloy steel or stainless steel), coating types, and coating thickness (0.03–0.5mm). Customers can provide drawings, samples, or working condition requirements for tailored production.
QHow is the quality of each valve gate ensured?
Every product undergoes comprehensive quality inspection including dimensional measurement, hardness testing, coating adhesion evaluation (bonding strength ≥70MPa), and sealing performance verification. All products comply with international industrial precision standards to guarantee reliable assembly with valve bodies.
QWhat are the packaging and shipping options?
Products are packed with inner anti-rust protective bags and outer fumigation-free plywood boxes or cartons, providing shockproof, damp-proof, and rust-resistant protection for safe transportation. Shipping options include sea freight and land & rail transportation to meet different delivery requirements.