High Pressure Wear Resistant Valve Gate for Oilfield - China Suppliers & Factory Offering 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
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.
2
Extremely Dense Coating
Extremely low porosity effectively blocks corrosive media, resisting cavitation and erosion.
3
Ultra-high Hardness and Wear Resistance
Surface hardness reaches HRC75, with wear resistance far exceeding ordinary welding/electroplating processes.
4
Excellent Corrosion Resistance
Suitable for harsh oilfield media containing sulfur, chlorine, acids, and alkalis, meeting NACE MR0175 standards.
5
High Dimensional Accuracy
Precision grinding after spraying results in a high degree of surface flatness and stable, reliable sealing performance.
6
Extra-long Service Life
Service life is 3-5 times longer than conventional valve gates, significantly reducing replacement and maintenance costs.
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
Standard Export Packaging
Inner: Rust-proof bag
Outer: Fumigation-free plywood case / Carton
Safe for sea transportation, shockproof & rustproof
Outer: Fumigation-free plywood case / Carton
Safe for sea transportation, shockproof & rustproof
Product Transportation
International Sea Transportation
Suitable for global ocean freight shipments.
Land / Railway Transportation
Available for inland and cross-border land or rail freight.
Frequently Asked Questions
Q What standard does this valve gate comply with, and what performance levels are available?
This valve gate is manufactured in full compliance with API 6A specifications and is available in both 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 and temperature ranges does this valve gate support?
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, meeting the demands of extreme oilfield environments.
Q What coating technologies are applied to enhance wear and corrosion resistance?
The valve gate utilizes advanced supersonic thermal spray coating technologies including cobalt-bonded tungsten carbide (WC/Co), cobalt-chromium-bonded tungsten carbide (WC/CoCr), nickel-based tungsten carbide (WC/Ni), Stellite alloy, and nickel-chromium-bonded chromium carbide (Cr₃C₂/NiCr), achieving a surface hardness of HRC75 and porosity below 1%.
Q Is this valve gate suitable for corrosive oilfield media such as H₂S or chloride environments?
Yes. The valve gate meets NACE MR0175 standards and is specifically designed to withstand harsh oilfield media containing sulfur, hydrogen sulfide (H₂S), chlorine, acids, and alkalis, making it ideal for sour service and corrosive environments.
Q How does the service life of this valve gate compare to conventional products?
Thanks to the ultra-hard thermal spray coating and precision grinding process, the service life of this valve gate is 3 to 5 times longer than conventional valve gates produced by standard welding or electroplating methods, significantly reducing downtime and maintenance costs.
Q What are the available nominal diameter options and base materials?
Nominal diameters range from 1-1/16" to 13-5/8", covering 12 standard sizes. Base materials include AISI 4130, AISI 4140, 316L stainless steel, 2205 duplex stainless steel, and 2507 super duplex stainless steel, selectable according to application requirements.