Ultra-High Precision Tungsten Carbide Valve Core with Mirror Finish Ra0.2 μm and

MOQ： 10pcs
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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
Brand Name	Sanxin
Model Number	SX-2295
Certification	ISO9001
Place of Origin	China

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Product Specification


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
Brand Name	Sanxin	Model Number	SX-2295
Certification	ISO9001	Place of Origin	China
High Light	Ultra-High Precision Valve Core ，Mirror Finish Ra0.2 μm Carbide Valve Core ，High Temperature Resistance Tungsten Carbide Valve Core

Ultra-High Precision Tungsten Carbide Valve Core

Product Overview

In critical industrial fluid control applications, the wear resistance and sealing performance of valve cores directly determine system lifespan and reliability. This product is manufactured from primary ultra-fine grain tungsten carbide and features a Ra0.2 μm (mirror-grade) surface finish achieved through advanced grinding and polishing processes.

This exceptional surface finish significantly reduces friction coefficient during valve core movement while effectively preventing particle adhesion from media, enhancing corrosion resistance and anti-erosion capabilities. Widely used in high-parameter valves across industries including petrochemicals, coal chemicals, high-pressure water jetting, hydrogen energy equipment, and deep-sea oil extraction.

Key Features

Premium Material: Manufactured from YG series (YG6/YG8) or sub-micron/nano tungsten carbide with hardness of HRA 89-93, offering high compressive strength and impact toughness.
Mirror Finish (Ra0.2): Achieved through fine grinding, lapping, and mirror polishing processes, ensuring consistent surface roughness at Ra 0.2μm. This mirror-like finish promotes effective "micro-seal" oil film formation, minimizing internal leakage.
Superior Wear Resistance: Tungsten carbide's wear resistance is dozens of times higher than standard stainless steel (316L), making it ideal for high differential pressure, high sand content, or particulate media applications.
High Temperature & Pressure Resistance: Maintains high red hardness at elevated temperatures, suitable for frequent start-stop cycles in high-pressure environments.

Technical Specifications

Parameter	Unit	Value/Standard	Notes
Material Composition	%	WC + Co (Cobalt Binder)	Options: YG6X, YG8, YN6, etc.
Surface Finish	µm	Ra ≤ 0.2	Mirror Polished Grade, achievable down to Ra0.1
Hardness	HRA	89 - 93	Equivalent HV approx. 1300-1700
Density	g/cm³	14.5 - 15.0	High density, porosity-free
Transverse Rupture Strength	MPa	≥ 2500	Ensures resistance to fracture under impact
Concentricity	mm	≤ 0.005	Ensured by precision grinding
Cylindricity	mm	≤ 0.002	Guarantees sealing fit accuracy
Operating Temperature	℃	-200 ~ +650	Higher in inert gas or vacuum environments
Mating Clearance	mm	0.005 - 0.015	Customizable based on working conditions
Standard Size Range	mm	Diameter Ø6 - Ø150	Custom non-standard sizes available upon request with drawings

Applications

Severe Service Ball/Gate/Globe Valves: As the core opening and closing component
High-Pressure Differential Control Valves: Resists cavitation and erosion
Plunger Pumps/Metering Pumps: Used as plungers; the Ra0.2 finish significantly extends seal life
Wear-Resistant Slurry Valves: Suitable for transporting slurries containing solid particles
Wellhead Equipment & Christmas Trees: Resists H₂S/CO₂ corrosive environments

Company Details

Bronze Gleitlager

Bronze Sleeve Bushings

and

Graphite Plugged Bushings

from Quality China Factory

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Business Type:

Manufacturer,Importer,Exporter,Seller,Other 


Year Established:

2003 


Total Annual:

8000000-10000000


Employee Number:

150~180 


Ecer Certification：

Verified Supplier 

Zhuzhou Sanxin Cemented Carbide Manufacturing Co.,Ltd is located in Zhuzhou, Hunan Province, which is known as the “Hometown of Cemented Carbide”. It is a national high-tech enterprise that has passed ISO9001:2015 international quality certification system, specializing in manufacturing,... Zhuzhou Sanxin Cemented Carbide Manufacturing Co.,Ltd is located in Zhuzhou, Hunan Province, which is known as the “Hometown of Cemented Carbide”. It is a national high-tech enterprise that has passed ISO9001:2015 international quality certification system, specializing in manufacturing,...

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Reach Us
Zhuzhou Sanxin Cemented Carbide Manufacturing Co., Ltd
No. 8, Middle School Road, Baiguan Town, Lusong District, Zhuzhou, Hunan, China
https://www.tungstencarbidesteel.com/

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