Zhejiang Jigong Valve Co., Ltd. is one of the most reliable manufacturers and suppliers of stellite overlay welded (stl) valve ball in China. If you're going to wholesale cheap stellite overlay welded (stl) valve ball made in China, welcome to get pricelist from our factory. All customized products are with high quality and low price.
Basic Introduction
Stellite surfacing valve balls are high-performance valve balls with Stellite cobalt-based hard alloy surfaced on the surface of the metal substrate. The surfacing layer has excellent high-temperature hardness, wear resistance, anti-cavitation, and anti-galling properties, can maintain stable sealing under high-temperature, high-pressure, and highly corrosive working conditions, meets the API 6D fireproof and anti-galling requirements, and is widely used in harsh working conditions such as oil and gas extraction, coal chemical industry, and nuclear power.
Product Specification
|
Indicator Item |
Technical Parameters |
|
Size Range |
1/2"–12" (DN15–DN300) |
|
Pressure Rating |
Class 150–4500LB(PN16–PN420) |
|
Sphere Material |
Carbon steel (A105, A350 LF2), stainless steel (F304/F316), duplex steel (F51/F53/F55), 17-4PH, Inconel, Monel, etc. |
|
Sealing surface material |
Stellite (Stellite 6/21) cobalt-based hardfacing layer |
|
Coaxiality |
≤0.05mm |
|
Roundness accuracy |
≤0.02mm |
|
Surface hardness |
HRC 55–65 (Stellite overlay) |
|
Surface Roughness |
Ra ≤ 0.4 μm (sealing surface) |
|
Outer diameter tolerance |
1/2"–4": +0.03 mm;6"–12": +0.05 mm |
|
Inner diameter tolerance |
1/2"–4": 0~+0.03 mm;6"–12": 0~+0.05 mm |
|
Applicable Temperature |
-196°C to 1200°C (Stellite layer can adapt to ultra-high temperature working conditions) |
Product Features
- Surfacing Stellite cobalt-based hard alloy on the surface of a metal substrate, with excellent performance
- The surfacing layer has excellent high-temperature hardness, wear resistance, cavitation resistance, and anti-seizure properties
- Can maintain stable and reliable sealing under high temperature, high pressure, and strong corrosion conditions
- Meets the requirements of API 6D fire protection and anti-galling standards, with strong compliance
- Suitable for ultra - harsh industrial working conditions such as oil and gas extraction, coal chemical industry, and nuclear power
Product Application Scope / Usage Scenarios
Applicable Media:
High-temperature and high-pressure fluids, strongly corrosive media, and easily cavitating media
Applicable Working Conditions:
High-temperature Conditions, High-pressure Conditions, Strong Corrosion Conditions, Conditions with Requirements for Anti-cavitation / Anti-seizure
Application Area:
Oil and Gas Extraction, Coal Chemical Industry, Nuclear Power, Valve Sealing Systems Complying with API 6D Standard
FAQ
What process and core materials are used for Stellite surfacing valve balls?
Made by surfacing Stellite cobalt-based hard alloy on the surface of a metal substrate.
What are the core properties of the surfacing layer of Stellite surfacing valve balls?
It has excellent high-temperature hardness, wear resistance, cavitation resistance, and anti-seizure properties.
What are the main application areas of Stellite hardfacing valve balls?
Widely used in harsh working conditions such as high temperature, high pressure, and strong corrosion in oil and gas extraction, coal chemical industry, nuclear power, etc.
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