Hansheng Automation (Dongguan) Co., Ltd. is one of the most experienced manufacturers and suppliers of stainless steel butterfly valve housing in China. If you're going to wholesale bulk cost-effective stainless steel butterfly valve housing made in China, welcome to get pricelist and quotation from our factory. Also, customized service and OEM&ODM service are available.
Introduction
The butterfly valve housing is the foundational core of your entire valve assembly. Its integrity, dimensional accuracy, and material quality directly determine the valve's sealing performance, service life, and overall reliability. At Hansheng Automation, we don't just cast metal; we engineer the bedrock of your fluid control system.
We specialize in producing superior-quality stainless steel butterfly valve housings, leveraging state-of-the-art casting processes and the same ultra-precision machining philosophy that defines our world-class gear and motion control components. Choose our valve bodies for performance that you can trust, cycle after cycle.
Features & Benefits
Why Our Stainless Steel Valve Housings Stand Apart?
Exceptional Casting Accuracy
Our advanced Sand Casting and Lost Foam Casting processes, controlled by CNC automatic mold making equipment, produce near-net-shape valve bodies. With a standard free tolerance of ±1mm and a specified tolerance reaching an incredible ±0.03mm, we minimize material waste and drastically reduce subsequent machining time, delivering both cost-efficiency and faster lead times to you.
Flawless Machining for Perfect Sealing
A perfect seal begins with a perfect surface. Our true advantage lies in our precision machining capabilities. We achieve tolerances as tight as ±0.005mm for critical dimensions like the valve seat bore and stem holes, with surface finishes reaching a super-mirror level of Ra 0.1. This level of accuracy, born from our experience in precision gear manufacturing, ensures optimal gasket seating, minimal operating torque, and a significantly extended valve lifespan.
Comprehensive Material Integrity
We work with a full range of stainless steel grades, including 304/CF8, 316/CF8M, and 316L/CF3M, to meet your specific corrosion resistance and application requirements. Every batch of raw material undergoes rigorous spectral analysis to guarantee its chemical composition, ensuring your valve housing performs flawlessly in harsh chemical, marine, or sanitary environments.
Scalable Production for Any Project
From small, intricate valve bodies to large-scale industrial housings, our facility is equipped to handle your needs. With a maximum casting size of 3800 x 1500 x 1200 mm and a fleet of Vertical and Horizontal Machining Centers (max processing size 2100 x 1060 mm), we are your reliable partner for projects of any scale, from prototype to high-volume production.
Our Process
From Molten Metal to Mission-Critical Component
Engineering Consultation & DFM
We work with your designs (or help you design) to ensure manufacturability and optimize for the casting process.
In-House Mold & Pattern Making
Rapid and precise mold production using our CNC equipment.
Controlled Casting Process
Precise control over pouring temperature and cooling rates for optimal metallurgical structure.
Heat Treatment
Solution annealing and other treatments to enhance mechanical properties and corrosion resistance.
Precision CNC Machining
Multi-axis machining of all critical faces, bores, and threads in a single setup where possible to ensure perfect alignment.
Rigorous Quality Assurance
100% inspection of critical dimensions, material certification, and mandatory pressure testing.
Technical Specifications
|
Parameter |
Specification |
|
Casting Materials |
Stainless Steel (CF8/304, CF8M/316, CF3M/316L), Duplex Steel, Custom Alloys |
|
Casting Processes |
Sand Casting, Lost Foam Casting, Gravity Casting |
|
Maximum Casting Size |
3800 x 1500 x 1200 mm |
|
Casting Tolerance |
Free Tolerance: ±1mm / Specified Tolerance: Down to ±0.03mm |
|
Machining Tolerance |
Standard: ±0.01mm / Precision: Down to ±0.002mm |
|
Applicable Standards |
API 609, ASME B16.34, DIN, ISO, or as per customer requirements |
|
Testing & Inspection |
Spectral Analysis (PMI), CMM Dimensional Inspection, Hardness Testing, NDT (Non-Destructive Testing), Hydrostatic Pressure Testing |
|
Surface Finish |
Standard Machined, Polished, Super-Mirror Finish (Ra 0.1) |
Our Commitment to Quality
While our company's reputation is built on manufacturing ultra-precision components like planetary gearboxes and harmonic drives, we apply that same deeply ingrained culture of precision to our casting and machining division. Your valve housing will be inspected using advanced CMM machines and verified by technicians who live and breathe tight tolerances. Every shipment is accompanied by a full quality documentation package, including material certificates and inspection reports, for your complete peace of mind.
Applications
Our stainless steel butterfly valve housings are trusted by industry leaders in:
Oil & Gas
Chemical Processing
Water & Wastewater Treatment
Food & Beverage
Pharmaceutical & Biotech
Power Generation
Marine & Shipbuilding
Pulp & Paper
FAQ
Q: What is the difference between CF8M (316) and CF8 (304) for a valve body?
A: The primary difference is the addition of molybdenum in CF8M (316), which significantly enhances its resistance to chlorides and general corrosion. CF8M is the preferred choice for marine, chemical, and coastal applications, while CF8 is an excellent, cost-effective option for general corrosive services. We can help you select the optimal material for your application.
Q: Can you handle complex internal geometries for valve housings?
A: Absolutely. Our Lost Foam Casting process is ideal for creating complex, single-piece castings with intricate internal passages, reducing the need for welding or assembly and improving the overall strength and integrity of the valve body.
Q: What is your typical lead time for a new valve housing project?
A: Lead times vary based on complexity, size, and quantity. Typically, for a new project, it ranges from 4-6 weeks for mold creation and first article inspection (FAI). Once the design is approved, production runs are significantly faster. Contact us with your project details for a precise timeline.
Q: What CAD file formats do you accept for quotation and manufacturing?
A: For manufacturing, we prefer 3D model files such as STEP (.stp, .step), IGES (.igs), SolidWorks (.sldprt), or Parasolid (.x_t). For initial quotations, 2D drawings in PDF or DWG format are also perfectly acceptable.
Q: What kind of surface finishes can you provide for the valve housings?
A: We offer a variety of surface finishes to meet both functional and aesthetic requirements.include:
As-Cast: Standard finish after casting.
Shot Blasted / Sand Blasted: A uniform matte finish.
Standard Machined: A clean, functional finish (typically 125 Ra or better).
Polished: A smooth, reflective finish, often required for sanitary applications.
Electro-Polished: A highly clean, passive, and corrosion-resistant mirror finish.
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