HUAYUN Stainless Steel Foundry
ISO 9001 Certified · Factory Direct · Xinyi, Jiangsu, China

Expert Stainless Steel Casting Solutions Across Every Industry

Tailored engineering excellence for Marine, Food & Beverage, Fluid Control, and Machinery sectors. ISO 9001 Certified with 100% Material Traceability.

ISO 9001:2015 Certified
OES Spectrometer — Every Heat
100% Hydrostatic Pressure Test
7–10 Day First Sample
EN 10204 3.1 MTC Standard

Material Diversity

304 · 316 · 316L · 17-4PH · Duplex 2205

Compliance

ISO 9001 · RoHS · MTC 3.1 · ASTM B117

Capacity

Prototypes to 100,000+ pcs / run

Lead Time

Prototype: 15–20 days · Mass: 30–45 days

Tolerance

CT4–CT6 casting · ±0.01mm CNC

Traceability

EN 10204 3.1 MTC with every batch

Industry Verticals

Five Sectors. One Certified Foundry.

From mirror-polished marine cleats to zero-porosity valve bodies — we engineer stainless steel solutions for the world's most demanding applications.

Marine & Offshore
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Marine HardwareBoat FittingsDeck EquipmentOffshore Components

Marine & Offshore

Built for the Harshest Saltwater Environments

We specialize in SS316L investment castings for the global marine industry — from superyacht deck hardware to offshore platform fittings. Every component undergoes 96-hour ASTM B117 salt spray testing and is available with EN 10204 3.1 Mill Test Certificates.

SS316L & Duplex SS for maximum chloride resistance. Hand mirror polishing to Ra < 0.2μm — anti-tea-staining. 96h Salt Spray Testing (ASTM B117) available.
  • SS316L & Duplex SS for maximum chloride resistance
  • Hand mirror polishing to Ra < 0.2μm — anti-tea-staining
  • 96h Salt Spray Testing (ASTM B117) available
  • Boat cleats, deck plates, hinges, through-hulls, mooring hardware
Standard GradeSS316 / SS316L
SurfacePassivation standard
PolishRa ≤ 0.2μm (#8 mirror)
Salt SprayASTM B117, 96h+ available
Food & Beverage
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Food Grade CastingDairy Equipment PartsKitchenware ComponentsSanitary Fittings

Food & Beverage

Hygienic Design. Non-Porous Surfaces. FDA-Compliant Materials.

Our Silica Sol investment casting process produces non-porous, smooth-surface components ideal for food contact applications. We supply sanitary valves, pump housings, and dairy fittings to food processing OEMs across Europe and North America.

SS304 & SS316L — FDA-compliant food contact materials. Electropolishing to Ra < 0.4μm for CIP/SIP compatibility. Zero-porosity internal surfaces — no bacterial harboring.
  • SS304 & SS316L — FDA-compliant food contact materials
  • Electropolishing to Ra < 0.4μm for CIP/SIP compatibility
  • Zero-porosity internal surfaces — no bacterial harboring
  • Sanitary clamp fittings, dairy valves, pump housings, mixers
GradesSS304, SS316L
Surface Ra≤ 0.4μm (electropolished)
ComplianceFDA-compliant materials
ApplicationsCIP/SIP compatible
Lighting & Architecture
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Architectural HardwareLED Fixture HousingsGlass SpigotsDecorative Castings

Lighting & Architecture

Precision Aesthetics for Architectural Excellence

We produce high-finish stainless steel components for the global lighting and architectural hardware industry — from precision LED fixture housings to glass spigots and decorative brackets. Our surface finishing capabilities include satin, mirror polish, PVD coating, and powder coat.

Satin, mirror, and brushed finishes for architectural aesthetics. Precision threading and tight-tolerance bores (±0.01mm). SS304 & SS316 for both interior and exterior applications.
  • Satin, mirror, and brushed finishes for architectural aesthetics
  • Precision threading and tight-tolerance bores (±0.01mm)
  • LED fixture housings, glass spigots, balustrade fittings, brackets
  • SS304 & SS316 for both interior and exterior applications
GradesSS304, SS316
FinishesSatin / Mirror / PVD / Powder
Tolerance±0.01mm (CNC finished)
ApplicationsInterior & exterior
Valve & Fluid Control
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Pump HousingsValve BodiesImpellersManifoldsPressure Castings

Valve & Fluid Control

Zero-Porosity. Pressure-Tight. Chemically Resistant.

Our Silica Sol lost-wax process delivers zero-porosity valve bodies and pump housings for high-pressure, corrosive media applications. Every casting undergoes 100% hydrostatic pressure testing and spectrometer material analysis before shipment.

Duplex SS 2205/2507 for aggressive chemical environments. 100% Hydrostatic Pressure Testing — zero-leakage guarantee. CT4–CT6 casting tolerance per ISO 8062.
  • Duplex SS 2205/2507 for aggressive chemical environments
  • 100% Hydrostatic Pressure Testing — zero-leakage guarantee
  • CT4–CT6 casting tolerance per ISO 8062
  • Valve bodies, pump impellers, manifolds, flanges, housings
GradesCF8M, CF8, Duplex 2205/2507
PressureClass 150 – Class 2500 (ASME)
Testing100% hydrostatic, PMI, X-Ray
ToleranceCT4–CT6 per ISO 8062
Automotive & Machinery
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Custom Auto PartsGearbox HousingsExhaust ManifoldsMachinery Components

Automotive & Machinery

Heat-Resistant Alloys. High-Volume Consistency.

We supply precision stainless steel castings to automotive and heavy machinery OEMs worldwide — from exhaust manifolds in 17-4PH to gearbox housings requiring tight dimensional consistency across high-volume production runs.

17-4PH & 410/430 SS for high-temperature applications. In-house 4/5-axis CNC finishing for critical mating surfaces. CMM dimensional inspection — FAIR reports available.
  • 17-4PH & 410/430 SS for high-temperature applications
  • In-house 4/5-axis CNC finishing for critical mating surfaces
  • CMM dimensional inspection — FAIR reports available
  • Exhaust manifolds, gearbox housings, brackets, custom fittings
Grades17-4PH, 410, 430, 304
Temp RangeUp to 800°C (17-4PH)
Machining4/5-axis CNC, ±0.01mm
InspectionCMM + FAIR report
Technical FAQ

Questions Engineers Ask Before Ordering

Don't See Your Industry?

Our Engineering Team specializes in custom solutions for unique applications. If you have a complex geometry, a non-standard alloy requirement, or a tight-tolerance challenge — we want to hear about it. Contact us for a free DFM review.

Certifications & Compliance

ISO 9001:2015 Certified
EN 10204 3.1 MTC
ASTM B117 Salt Spray
RoHS Compliant
ASTM A351 / A743
NACE MR0175