Corrosion Resistant Wellhead Valve Gate - 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
🔩 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
🚢
Sea Freight
🚛
Land & Rail Transportation
Frequently Asked Questions (FAQ)
Q
What 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.
Q
What materials are available for the slab valve gate?
Our slab valve gates are available in high-strength alloy steel (4130, 4140) and stainless steel (304, 316). Customized alloy materials can also be provided based on specific working condition requirements.
Q
What surface treatment technology is applied and what are the benefits?
We use HVOF (High Velocity Oxygen Fuel) thermal spray coating technology to apply materials such as WC/Co, WC/CoCr, Stellite alloys, and nickel-based coatings. This creates a high-density, high-hardness (HRC75) protective layer with porosity below 1%, offering superior wear resistance, corrosion resistance, and bonding strength ≥70MPa.
Q
What pressure ratings and sizes are supported?
We support working pressures from 2,000 psi (2K) up to 20,000 psi (20K), and nominal diameters ranging from 1-13/16" to 13-5/8". Custom sizes are also available upon request.
Q
Can you provide customized slab valve gates based on our drawings or samples?
Yes. We fully support OEM and customized production. Customers can provide drawings, samples, or specific working condition requirements, and we will manufacture valve gates with the corresponding sizes, materials, coatings, and tolerances to ensure perfect fit and performance.
Q
What quality inspections does each valve gate undergo before shipment?
Every slab valve gate is subject to a comprehensive quality inspection process, including dimensional measurement, hardness testing, coating adhesion evaluation, and sealing performance verification. All products must comply with international industrial precision standards before shipment.