Wear Resistant Screw Rod for High Pressure Wellhead Valves
Product Description
Crafted from high-quality base materials, the product undergoes quenching and tempering heat treatment to enhance overall strength and toughness. Its surface is processed with HVOF (High Velocity Oxygen Fuel) spraying technology, depositing a wear-resistant and corrosion-resistant coating (e.g., tungsten carbide WC) that boasts strong adhesion, no pores, and ultra-high hardness. With precision CNC machining, the screw rod features accurate thread dimensions, excellent coaxiality, and smooth surface finish, ensuring seamless assembly and smooth operation without jamming.
Ideal for high-pressure, high-wear, and corrosive environments, this screw rod effectively resists medium erosion, particle abrasion, and chemical corrosion, significantly extending the service life of valves. It is widely used in petroleum, petrochemical, water treatment, and industrial control valve systems, becoming an indispensable key accessory for valves operating under severe working conditions.
Product Specifications
|
Type |
Screw Rod (Valve Accessory) |
|
Base Material |
High-strength carbon steel (45#/4140), alloy steel (42CrMo), stainless steel (304/316L) |
|
Surface Technology |
HVOF (High Velocity Oxygen Fuel) spraying (tungsten carbide WC coating optional) |
|
Coating Hardness |
≥ HRC 75 |
|
Working Pressure |
Up to 105MPa (customizable for higher pressure grades) |
|
Working Temperature |
-40℃ ~ 220℃ (high-temperature customized versions available) |
|
Processing Precision |
Thread precision Grade 6-7, coaxiality ≤ 0.02mm |
|
Surface Roughness |
Ra ≤ 0.8μmHRC55~60; Chrome plating: HRC45~55 |
|
Applicable Media |
Crude oil, natural gas, water, chemical corrosive media, abrasive media with particles |
|
Applicable Valves |
Industrial control valves, petroleum & petrochemical valves, high-pressure pipeline valves, water treatment valves |
|
Size Range |
Standard sizes available; non-standard customization supported (per drawings/samples) |
|
Quality Standard |
Compliant with domestic and international standards for industrial valve accessories |
Product Features
Precision-machined threads and smooth rod body ensure sensitive and accurate control of valve opening/closing and flow, improving valve operation stability.
HVOF-sprayed coating provides exceptional wear resistance, resisting particle abrasion and medium scouring, with a service life 3-5 times longer than ordinary screw rods.
Quenched and tempered base material + anti-corrosion coating offer double protection, withstanding high pressure, high temperature, and chemical corrosion without deformation or cracking.
CNC precision processing ensures tight dimensional tolerance and excellent fitting with valves, enabling quick and hassle-free installation.
Suitable for petroleum, petrochemical, water treatment, and other harsh working conditions; supports customization of material, size, and coating as per customer needs.
Product Packaging
Inner: Anti-rust protective packaging
Outer: Fumigation-free plywood box or export carton
Shockproof, damp-proof and anti-corrosive, ensuring safe delivery by sea freight.
Product Transportation
● Ocean Freight
● Ground & Rail Delivery