Corrosion Resistant Valve Gate for Wellhead | 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
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Standard Export Packaging
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Inner: Anti-rust protective bag
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Outer: Fumigation-free plywood box or carton
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Shockproof, damp-proof and rust-resistant, guaranteeing safe sea transportation.
Product Transportation
Logistics & Shipping
- 🚢 Sea Freight
- 🚂 Land & Rail Transportation
Frequently Asked Questions
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What materials are available for slab valve gates?
Our slab valve gates are primarily manufactured from high-strength alloy steel (4130, 4140) and stainless steel (304, 316). We also support customized alloy materials to meet specific working condition requirements. Please contact us with your application details for a tailored material recommendation.
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What is the maximum working pressure these valve gates can handle?
Our slab valve gates support a wide range of working pressures from 2,000 psi (2K) up to 20,000 psi (20K), covering 2K, 3K, 5K, 10K, 15K, and 20K pressure ratings. This makes them suitable for both standard and ultra-high-pressure oilfield and pipeline applications.
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What surface treatment technology is applied to the valve gates?
We use advanced HVOF (High Velocity Oxygen Fuel) thermal spray coating technology. Available coating materials include cobalt-bonded tungsten carbide (WC/Co), cobalt-chromium-bonded tungsten carbide (WC/CoCr), Stellite alloys, nickel-chromium-bonded chromium carbide (Cr₃C₂/NiCr), nickel-based alloys (Ni60/Ni55), and nickel-based tungsten carbide (WC/Ni). Coating thickness ranges from 0.03 to 0.5mm and is customizable.
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Can you produce slab valve gates based on custom drawings or samples?
Yes, we fully support OEM and ODM services. Customers can provide drawings, samples, or detailed working condition requirements, and we will manufacture slab valve gates in the required sizes, materials, coatings, and tolerances to ensure a perfect fit with your valve bodies and systems.
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What quality inspections are performed before shipment?
Every slab valve gate undergoes a comprehensive quality inspection process before shipment, including dimensional verification, hardness testing (HRC75), coating adhesion testing (≥70MPa bonding strength), porosity evaluation (<1%), and sealing performance testing. We comply with international industrial precision standards to ensure consistent product quality.
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What are the available shipping methods and packaging standards?
We offer sea freight and land & rail transportation options to accommodate different delivery needs. All products are packed in standard export packaging: inner anti-rust protective bags with outer fumigation-free plywood boxes or cartons. The packaging is shockproof, damp-proof and rust-resistant to ensure safe delivery during long-distance sea or land transportation.