Corrosion Resistant Valve Gate for Wellhead - Premium Quality from 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.
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
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.
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.
3
Precision Machining Accuracy
CNC precision machining and fine grinding ensure flatness, smoothness and dimensional accuracy, achieving zero-leakage sealing effect.
4
Extreme Working Condition Adaptability
Perfectly resist high pressure, abrasive wear, chemical corrosion and frequent switching, suitable for harsh oilfield and petrochemical environments.
5
Long Service Life
Excellent wear resistance and stability greatly reduce replacement frequency, lower equipment maintenance costs and improve operational efficiency.
6
Perfect Sealing Performance
Optimized structural design and high-precision surface guarantee stable and reliable sealing during long-term use.
7
Customized Service
Support customized production of various sizes, materials and coatings according to customer drawings, samples and working condition requirements.
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
Q1
What working pressure ratings are available for your slab valve gates?
Our slab valve gates are available in a full range of pressure ratings: 2000psi (2K), 3000psi (3K), 5000psi (5K), 10000psi (10K), 15000psi (15K), and 20000psi (20K), covering most oilfield wellhead and pipeline control application requirements.
Q2
What surface treatment technology is applied to the valve gates, and what are the benefits?
We use advanced HVOF (High Velocity Oxygen Fuel) thermal spray coating technology. This process applies coatings such as WC/Co, WC/CoCr, Stellite alloys, and Ni-based materials, resulting in a surface hardness of HRC75, porosity below 1%, and bonding strength ≥70MPa — significantly outperforming conventional surface treatments in wear and corrosion resistance.
Q3
Can you produce customized slab valve gates according to our specific requirements?
Yes. We provide full customization services including various nominal diameters, materials (alloy steel, stainless steel, or special alloys), coating types, coating thickness (0.03–0.5mm), and dimensional tolerances. Customers can submit drawings, samples, or detailed working condition requirements for tailored production.
Q4
What quality inspections does each valve gate undergo before shipment?
Every slab valve gate is subjected to a comprehensive quality inspection process covering dimensional accuracy verification, hardness testing, coating adhesion strength evaluation, porosity measurement, and sealing performance testing. Only products that meet all standards are approved for delivery.
Q5
What types of media and operating environments are these valve gates suitable for?
Our slab valve gates are designed to handle crude oil, natural gas, oil-gas mixtures, corrosive petroleum fluids, and high-pressure water. They are engineered to perform reliably in extreme environments including ultra-high pressure, abrasive wear, chemical corrosion, frequent open/close cycles, and temperatures ranging from -46°C to +121°C.
Q6
What are the available shipping methods and how is the product packaged for export?
We support Sea Freight and Land & Rail Transportation for international delivery. Each product is packed with an inner anti-rust protective bag and placed in a fumigation-free plywood box or carton. The packaging is fully shockproof, damp-proof, and rust-resistant to ensure safe arrival during long-distance sea transportation.