High Pressure Wear Resistant Valve Gate for Oilfield - China Suppliers and Factory with Alloy Steel and Corrosion Resistance
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 & 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 (FAQ)
Q
What standard does this valve gate comply with, and what performance levels are available?
This valve gate is fully compliant with API 6A specifications. It is available in both PR1 and PR2 performance levels, making it suitable for a wide range of wellhead and Christmas tree gate valve applications in the oil and gas industry.
Q
What surface coating technologies are applied to this valve gate?
The valve gate uses advanced supersonic thermal spray coating technologies, including 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), and nickel-based tungsten carbide (WC/Ni).
Q
What pressure and temperature ranges can this valve gate handle?
This valve gate supports working pressures from 2,000 psi (2K) up to 20,000 psi (20K), and is designed to operate reliably across a temperature range of -46°C to +121°C, making it well-suited for extreme oilfield environments.
Q
What materials are used in the manufacturing of this valve gate?
The valve gate is forged from high-strength alloy steel or stainless steel, including AISI 4130, AISI 4140, 316L stainless steel, 2205 Dual-phase Steel, and 2507 Dual-phase Steel, ensuring 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 coating (HRC75 surface hardness) and precision machining, the service life of this valve gate is 3–5 times longer than that of conventional valve gates, significantly reducing downtime, replacement frequency, and overall maintenance costs.
Q
How is the valve gate packaged for international export, and what shipping methods are available?
Each valve gate is packed in a rust-proof inner bag and placed inside a fumigation-free plywood case or carton for export. The packaging is designed to be shockproof and rustproof for sea transportation safety. International shipping is available via sea freight, land transportation, and railway transportation.