High Pressure Wear Resistant Valve Gate for Oilfield - China Suppliers and Factory of Premium Alloy Steel Products
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 | 2000psi(2K)/ 3000psi(3K)/ 5000psi(5K)/ 10000psi(10K)/ 15000psi(15K)/ 20000psi(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 | ≥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) |
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.
Product Packaging
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Standard export packaging
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Inner: Rust-proof bag
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Outer: Fumigation-free plywood case / Carton
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Safe for sea transportation, shockproof & rustproof
Product Transportation
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International Sea Transportation
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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, making it suitable for oilfield wellhead and Christmas tree gate valve applications.
Q
What working pressure range does the valve gate support?
The valve gate supports a wide range of working pressures: 2000psi (2K), 3000psi (3K), 5000psi (5K), 10000psi (10K), 15000psi (15K), and up to 20000psi (20K), covering most demanding oilfield pressure requirements.
Q
What surface coating options are available?
Multiple thermal spray coating options are available, including cobalt-bonded tungsten carbide (WC/Co), cobalt-chromium-bonded tungsten carbide (WC/CoCr), Stellite 20#/NiCr alloy, nickel-chromium-bonded chromium carbide (Cr₃C₂/NiCr), nickel-based alloys (Ni60/Ni55), and nickel-based tungsten carbide (WC/Ni), depending on the application environment.
Q
How does the service life of this valve gate compare to conventional products?
Thanks to the ultra-high hardness coating (HRC75) and metallurgical bonding technology, the service life of this valve gate is 3–5 times longer than conventional valve gates, significantly reducing downtime and maintenance costs in oilfield operations.
Q
Is this valve gate suitable for corrosive oilfield media?
Yes. The valve gate is designed for harsh oilfield environments and is suitable for media including crude oil, natural gas, oilfield wastewater, mud, and oil-gas mixtures containing sulfur, chlorine, acids, and alkalis. It meets NACE MR0175 corrosion resistance standards.
Q
What packaging is used for export shipment?
All products are packed using standard export packaging: rust-proof inner bags and fumigation-free plywood cases or cartons as outer packaging. The packaging is fully designed to withstand sea transportation, providing shockproof and rustproof protection throughout transit.