High Pressure Wear Resistant Valve Gate for Oilfield - China Suppliers Factory, Corrosion Resistant Alloy Steel
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 & 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
Product Transportation
International Sea Transportation
Land / Railway Transportation
Frequently Asked Questions (FAQ)
What standard specifications do these valve gates meet?
Our valve gates are fully compliant with API 6A specifications. They are available in both PR1 and PR2 performance levels, making them suitable for harsh oil and gas exploration environments.
What working pressures and temperatures can the valve gate handle?
They are engineered to withstand high-pressure conditions ranging from 2000psi (2K) up to 20000psi (20K), and operate reliably in extreme working temperatures from -46℃ to +121℃.
What materials and surface treatments are used?
The gates are forged from high-strength alloy steel or stainless steel (such as AISI 4130, AISI 4140, 316L, and 2205/2507 dual-phase steels) and undergo supersonic thermal spraying (e.g., WC/Co, Stellite, and nickel-based alloys) to achieve a surface hardness of HRC75.
How does the coating improve performance in harsh oilfields?
The thermal spray coating offers ultra-high adhesion (bonding strength ≥70MPa) and extremely low porosity (<1%). This blocks corrosive media (like sulfur, chlorine, acids, and alkalis) and provides exceptional resistance to wear, cavitation, and erosion.
How are the products packaged for shipping?
We use standard export packaging, which includes a rust-proof bag internally and a fumigation-free plywood case or carton externally. This ensures the cargo remains shockproof and rustproof during sea, land, or railway transportation.