High Pressure Wear Resistant Valve Gate for Oilfield - China Suppliers & Factory for Durable Solutions
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 (FAQ)
Q
What standard does the API 6A valve gate comply with, and what performance levels are available?
The valve gate fully complies with API 6A specifications. It is available in PR1 and PR2 performance levels, making it suitable for a wide range of oilfield wellhead and Christmas tree gate valve applications.
Q
What working pressure range does the valve gate support?
The valve gate supports working pressures from 2,000 psi (2K) up to 20,000 psi (20K), covering 2K, 3K, 5K, 10K, 15K, and 20K pressure ratings to meet diverse field requirements.
Q
What surface treatment coatings are available for the valve gate?
Multiple supersonic 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 alloy (Ni60/Ni55), and nickel-based tungsten carbide (WC/Ni). The choice depends on the operating media and environmental conditions.
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Is the valve gate suitable for corrosive oilfield media such as sour gas or chlorine-containing fluids?
Yes. The valve gate is specifically designed for harsh oilfield environments. It meets NACE MR0175 standards and is compatible with media containing hydrogen sulfide (H₂S), chlorine, acids, and alkalis, making it ideal for sour service applications.
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How does the service life of this valve gate compare to conventional products?
Thanks to the ultra-hard thermal spray coating (HRC75 surface hardness) and extremely low porosity (<1%), the service life of this valve gate is 3–5 times longer than conventional valve gates produced by ordinary welding or electroplating processes, significantly reducing downtime and maintenance costs.
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What packaging and shipping methods are used for export orders?
All products are packed in standard export packaging: rust-proof inner bags and fumigation-free plywood cases or cartons as outer packaging, ensuring shockproof and rustproof protection. International shipments are supported via sea freight and land/railway transportation to destinations worldwide.