High Pressure Wear Resistant Valve Gate for Oilfield | China Suppliers & Factory - Durable Alloy Steel Design
Product Description
API 6A standard valve gate is precision-engineered for gate valves in oilfield wellhead and Christmas tree systems. Forged from high-strength alloy steel or stainless steel, it features advanced thermal spray coating (cobalt-coated tungsten carbide, nickel-based tungsten carbide, cobalt-chromium tungsten alloy) for exceptional wear resistance, erosion resistance and corrosion resistance. With precision machining and optimized sealing structure, it ensures tight sealing performance under high pressure (2K–20K psi) and extreme temperature conditions. Compliant with API 6A specifications, available in PR1 and PR2 performance levels, it delivers stable operation, long service life and reliable compatibility for harsh oil and gas exploration environments.
Product Specifications
| Nominal Diameter | 1-1/16" / 2-1/16" / 2-9/16" / 3-1/8" / 3-1/2" / 4-1/16" / 5-1/8" / 6-5/8" / 7-1/16" / 9" / 11" / 13-5/8" |
| Working Pressure | 2000 psi (2K) / 3000 psi (3K) / 5000 psi (5K) / 10000 psi (10K) / 15000 psi (15K) / 20000 psi (20K) |
| Media | Crude oil / Natural gas / Oilfield wastewater / Mud / Water / Oil-gas mixtures |
| Material | AISI 4130 / AISI 4140 / 316L / 2205 Dual-phase Steel / 2507 Dual-phase Steel |
| Working Temperature | -46℃ ~ +121℃ |
| Hardness | HRC75 |
| Bonding Strength | ≥70 MPa |
| 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) |
Product Features
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1. Ultra-high Coating Adhesion
The coating is metallurgically bonded to the substrate, ensuring a strong and non-detachable bond, suitable for high-pressure impact conditions.
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2. Extremely Dense Coating
Extremely low porosity effectively blocks corrosive media, resisting cavitation and erosion.
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3. Ultra-high Hardness and Wear Resistance
Surface hardness reaches HRC75, with wear resistance far exceeding ordinary welding/electroplating processes.
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4. Excellent Corrosion Resistance
Suitable for harsh oilfield media containing sulfur, chlorine, acids, and alkalis, meeting NACE MR0175 standards.
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5. High Dimensional Accuracy
Precision grinding after spraying results in a high degree of surface flatness and stable, reliable sealing performance.
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6. Extra-long Service Life
Service life is 3–5 times longer than conventional valve gates, significantly reducing replacement and maintenance costs.
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7. Suitable for Harsh Conditions
Perfectly matches API 6A standard valves, meeting the needs of high-pressure, high-temperature, and high-wear oil and gas field scenarios.
Packaging & Transportation
📦 Product Packaging
- Standard export packaging
- Inner: Rust-proof bag
- Outer: Fumigation-free plywood case / Carton
- Safe for sea transportation, shockproof & rustproof
🚢 Product Transportation
- International Sea Transportation
- Land / Railway Transportation
Frequently Asked Questions
Q
What standard does this valve gate comply with?
This valve gate is fully compliant with API 6A specifications and is available in both PR1 and PR2 performance levels, ensuring it meets the rigorous requirements of oilfield wellhead and Christmas tree systems.
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What working pressure and temperature ranges are supported?
The valve gate supports working pressures from 2,000 psi (2K) up to 20,000 psi (20K) and operates reliably across a temperature range of -46°C to +121°C, making it suitable for extreme oilfield environments.
Q
What surface coating options are available for the valve gate?
Multiple thermal spray coating options are available, including cobalt-bonded tungsten carbide (WC/Co), cobalt-chromium-bonded tungsten carbide (WC/CoCr), nickel-based tungsten carbide (WC/Ni), Stellite alloy (Stellite 20#), and nickel-based alloys (Ni60/Ni55), all applied via supersonic spraying for superior adhesion and density.
Q
What materials are used to manufacture the valve gate?
The valve gate is forged from high-strength alloy steel or stainless steel, including AISI 4130, AISI 4140, 316L stainless steel, 2205 duplex stainless steel, and 2507 super duplex stainless steel, offering excellent mechanical strength and corrosion resistance.
Q
How does the service life of this valve gate compare to conventional products?
Thanks to the ultra-hard thermal spray coating (HRC75) and precision grinding, the service life of this valve gate is 3–5 times longer than conventional valve gates produced by welding or electroplating, significantly lowering maintenance frequency and total cost of ownership.
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What media types is this valve gate compatible with?
The valve gate is compatible with a wide range of oilfield media, including crude oil, natural gas, oilfield wastewater, drilling mud, water, and oil-gas mixtures. It also meets NACE MR0175 standards for use in environments containing sulfur, chlorine, acids, and alkalis.