High Pressure Wear Resistant Valve Gate for Oilfield - China Suppliers and Factory Offering High Hardness Alloy Steel 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 & Transportation
Product Packaging
Standard export packaging
Inner: Rust-proof bag
Outer: Fumigation-free plywood case / Carton
Safe for sea transportation, shockproof & rustproof
Inner: Rust-proof bag
Outer: Fumigation-free plywood case / Carton
Safe for sea transportation, shockproof & rustproof
Product Transportation
International Sea Transportation
Land / Railway Transportation
Land / Railway Transportation
Frequently Asked Questions
Q
What 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 and Christmas tree applications.
Q
What surface treatment / coating options are available?
Multiple 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#/NiCr), nickel-chromium-bonded chromium carbide (Cr₃C₂/NiCr), nickel-based alloy (Ni60/Ni55), and nickel-based tungsten carbide (WC/Ni). Each coating is applied via supersonic spraying for maximum adhesion and density.
Q
What materials are used to manufacture the valve gate?
The valve gate is forged from high-strength alloy steel or stainless steel, including AISI 4130, AISI 4140, 316L, 2205 Dual-phase Steel, and 2507 Dual-phase Steel. Material selection depends on the specific operating environment and corrosion requirements.
Q
How does the service life of this valve gate compare to conventional products?
Thanks to the ultra-hard thermal spray coating (surface hardness HRC75) and precision grinding post-treatment, the service life of this valve gate is 3–5 times longer than conventional valve gates manufactured using welding or electroplating processes, significantly reducing downtime and maintenance costs.
Q
Is this valve gate suitable for sour gas or corrosive oilfield media?
Yes. The valve gate is designed for harsh oilfield media including crude oil, natural gas, oilfield wastewater, mud, water, and oil-gas mixtures containing sulfur, chlorine, acids, and alkalis. It meets NACE MR0175 standards for sour service environments.
Q
What performance levels and standards does this valve gate comply with?
The valve gate is fully compliant with API 6A specifications and is available in both PR1 and PR2 performance levels, ensuring reliable compatibility and quality assurance for demanding oil and gas exploration environments worldwide.