High Pressure Wear Resistant Valve Gate for Oilfield - Durable Alloy Steel from China Suppliers and Factory
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
Product Transportation
- 🚢International Sea Transportation
- 🚛Land / Railway Transportation
Frequently Asked Questions (FAQ)
QWhat pressure ratings are available for the API 6A valve gate?
The API 6A valve gate is available in six working pressure ratings: 2000 psi (2K), 3000 psi (3K), 5000 psi (5K), 10000 psi (10K), 15000 psi (15K), and 20000 psi (20K), covering a wide range of oilfield wellhead application requirements.
QWhat surface treatment options are available for the valve gate?
Multiple supersonic thermal spray coating options are available, including cobalt-bonded tungsten carbide (WC/Co), cobalt-chromium-bonded tungsten carbide (WC/CoCr), cobalt-chromium tungsten alloy (Stellite 20#), nickel-chromium-bonded chromium carbide (Cr₃C₂/NiCr), nickel-based alloy (Ni60/Ni55), and nickel-based tungsten carbide (WC/Ni), each suited to different corrosion and wear environments.
QWhat materials are used to manufacture the valve gate body?
The valve gate body is forged from high-strength alloy steel or stainless steel grades including AISI 4130, AISI 4140, 316L, 2205 Dual-phase Steel, and 2507 Dual-phase Steel, ensuring excellent mechanical strength and corrosion resistance under demanding oilfield conditions.
QIs the valve gate compliant with international oilfield standards?
Yes. The valve gate is fully compliant with API 6A specifications and is available in both PR1 and PR2 performance levels. It also meets NACE MR0175 standards for sour service environments containing hydrogen sulfide (H₂S).
QHow does the service life of this valve gate compare to conventional products?
Thanks to the ultra-hard thermal spray coating (surface hardness up to HRC75) and extremely low porosity (<1%), the service life of this valve gate is 3–5 times longer than conventional welded or electroplated valve gates, significantly reducing downtime and maintenance costs.
QWhat are the available nominal diameters and working temperature range?
The valve gate is available in nominal diameters from 1-1/16" up to 13-5/8", covering all standard wellhead and Christmas tree sizes. The working temperature range is -46°C to +121°C, making it suitable for both arctic and high-temperature oilfield environments.