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High Dimensional Stability Carbon Tungsten Valve Tip Connected Piston Rod with Up to 2500 MPa Tensile Strength and Long Lifespan
High Dimensional Stability Carbon Tungsten Valve Tip Connected Piston Rod with Up to 2500 MPa Tensile Strength and Long Lifespan
High Dimensional Stability Carbon Tungsten Valve Tip Connected Piston Rod with Up to 2500 MPa Tensile Strength and Long Lifespan
High Dimensional Stability Carbon Tungsten Valve Tip Connected Piston Rod with Up to 2500 MPa Tensile Strength and Long Lifespan
High Dimensional Stability Carbon Tungsten Valve Tip Connected Piston Rod with Up to 2500 MPa Tensile Strength and Long Lifespan
High Dimensional Stability Carbon Tungsten Valve Tip Connected Piston Rod with Up to 2500 MPa Tensile Strength and Long Lifespan
High Dimensional Stability Carbon Tungsten Valve Tip Connected Piston Rod with Up to 2500 MPa Tensile Strength and Long Lifespan
High Dimensional Stability Carbon Tungsten Valve Tip Connected Piston Rod with Up to 2500 MPa Tensile Strength and Long Lifespan
Specifications
Brand Name :
Sanxin
Model Number :
SX-2294
Certification :
ISO9001
Place of Origin :
China
MOQ :
10pcs
Price :
Negotiation
Payment Terms :
L/C,T/T
Supply Ability :
10000pcs/month
Dimensional Stability :
High
Tensilestrength :
Up to 2500 MPa
Flexural Strength :
1500 - 3000 MPa
Size :
Customized
Melting Point :
2,870°C
Lifespa :
Long
Working Temperature :
-200°C ~ +800°C
Hole Size :
1.6 Inner Hole
Quenching Temperature :
1400 - 1600°C
Thermal Conductivity :
70 - 100 W/m·K
Description
Carbon Tungsten Valve Tip Connected Piston Rod
Product Overview
The Carbon Tungsten Valve Tip Connected Piston Rod is a high-performance industrial component featuring a dual-metal composite structure. It integrates an ultra-hard carbon tungsten (cemented carbide) valve tip with a high-toughness alloy steel piston rod through specialized joining processes. This product is specifically engineered for extreme operating conditions such as high temperature, high pressure, high flow velocity, and media containing solid particles. It effectively resolves issues like sealing failure and valve tip detachment caused by erosion and wear in traditional metal valve stems. It is widely used in valves, pumps, and hydraulic systems across the petroleum, chemical, power, and mining industries.
Product Structure
This product consists of three main components:
  • Front Valve Tip: Made of carbon tungsten, forming the sealing surface (typically spherical or conical)
  • Rear Rod Body: Made of stainless steel or alloy steel, used to connect to the driving device
  • Connection Joint: The valve tip and rod body are securely joined through high-strength brazing or thermal assembly processes
Core Advantages
  • Superior Wear Resistance, Extended Lifespan: Carbon tungsten valve tip boasts hardness of HRA 90+, offering wear resistance dozens of times greater than stainless steel
  • Composite Structure, Combining Rigidity and Toughness: Features both the rigidity of cemented carbide and the toughness of metal rod, avoiding brittleness and fracture-proneness
  • Tight Seal, Zero Leakage: Valve tip sealing surface is ultra-precisely ground and polished to surface roughness as low as Ra ≤ 0.2μm
  • Secure Connection, Reliable Safety: Utilizes vacuum brazing technology with extremely high bond strength and shear resistance
Technical Specifications
Parameter Category Specification Remarks/Custom Options
Valve Tip Material Carbon Tungsten (Cemented Carbide)
Common Grades: YG6, YG8, YG11		 Corrosion-resistant grades available based on media corrosiveness
Valve Tip Hardness HRA 89.0 ~ 93.0 Equivalent to HRC 75+
Rod Body Material 304 / 316L Stainless Steel
17-4PH Precipitation Hardening Stainless Steel
40Cr Alloy Steel		 Optional hard chrome plating for enhanced wear resistance
Joining Process High-frequency Brazing (Silver-based/Nickel-based)
Interference Thermal Assembly		 Vacuum brazing prevents oxidation, resulting in denser welds
Surface Roughness Sealing Surface Ra ≤ 0.2 μm
Rod Body Area Ra ≤ 0.4 μm		 Mirror polish grade
Geometric Tolerance Coaxiality ≤ φ0.03mm Ensures smooth motion without sticking
Operating Temperature -40℃ ~ +450℃ Special nickel-based solder allows up to 800℃
Operating Pressure ≤ 42 MPa Special designs can exceed 100MPa
Product Details
Valve Tip Section: Manufactured from virgin carbon tungsten powder via powder metallurgy, ensuring high density and absence of porosity or inclusions. The sealing spherical surface undergoes three processes: rough grinding, fine grinding, and lapping, guaranteeing perfect spherical contour accuracy for optimal mating with the valve seat.
Rod Body Section: Made of high-quality stainless steel or alloy steel, subjected to quenching and tempering treatment for excellent comprehensive mechanical properties. The surface can be chrome-plated or coated as needed to reduce the friction coefficient within the packing gland.
Connection Joint: Employs vacuum brazing technology, allowing the brazing filler metal to uniformly penetrate the microscopic gaps of the joint interface, forming a strong metallurgical bond. The weld area has a smooth transition with no stress concentration points, capable of withstanding impact loads from high-frequency reciprocating motion.
Application Fields
Industry Typical Equipment Operating Characteristics
Petrochemical High-pressure differential control valves, Discharge valves, Angle valves High pressure, erosion, media containing particles (e.g., coal slurry, coke powder)
Power Industry Boiler blowdown valves, Steam traps, Ash handling system valves High-temperature steam, cavitation, flashing
Mining & Metallurgy Slurry valves, Slurry pumps, Diaphragm pumps Low-concentration abrasive wear, severe erosion
General Machinery High-pressure plunger pumps, Oilfield fracturing pumps Reciprocating motion, high pressure, poor lubrication
High Dimensional Stability Carbon Tungsten Valve Tip Connected Piston Rod with Up to 2500 MPa Tensile Strength and Long Lifespan
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High Dimensional Stability Carbon Tungsten Valve Tip Connected Piston Rod with Up to 2500 MPa Tensile Strength and Long Lifespan

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Product Detail
Brand Name :
Sanxin
Model Number :
SX-2294
Certification :
ISO9001
Place of Origin :
China
MOQ :
10pcs
Price :
Negotiation
Contact Supplier
High Dimensional Stability Carbon Tungsten Valve Tip Connected Piston Rod with Up to 2500 MPa Tensile Strength and Long Lifespan
High Dimensional Stability Carbon Tungsten Valve Tip Connected Piston Rod with Up to 2500 MPa Tensile Strength and Long Lifespan
High Dimensional Stability Carbon Tungsten Valve Tip Connected Piston Rod with Up to 2500 MPa Tensile Strength and Long Lifespan
High Dimensional Stability Carbon Tungsten Valve Tip Connected Piston Rod with Up to 2500 MPa Tensile Strength and Long Lifespan

Zhuzhou Sanxin Cemented Carbide Manufacturing Co., Ltd

Verified Supplier
8 Years
hunan, zhuzhou
Since 2003
Business Type :
Manufacturer, Importer, Exporter, Seller, Other
Main Products :
Tungsten Carbide Processing, Tungsten Carbide Nozzle, Tungsten Carbide Punch
Total Annual :
8000000-10000000
Employee Number :
150~180
Certification Level :
Verified Supplier
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