Customized SS304 and SS316 investment castings are precision-engineered components manufactured to your exact specifications, covering fittings, connectors, valve bodies and other industrial hardware requiring corrosion-resistant stainless steel construction.
|
Item |
Specification |
|
Casting Process |
100% Silica Sol Investment Casting |
|
Weight Range |
0.01–25 kg |
|
Material |
SS304, SS316, SS316L, Duplex SS |
|
Dimensional Tolerance |
ISO 8062 CT4–CT6; CNC ±0.01 mm |
|
Surface Finish |
Ra 3.2–6.3 μm (as-cast); Ra 0.8–1.6 μm (machined) |
|
Minimum Wall Thickness |
2.5 mm |
|
Material Inspection |
100% OES & PMI verification |
|
Heat Treatment |
Solution annealed (1050–1100°C) |
Key Benefits
Continuous Working Pressure: Silica sol investment casting eliminates internal porosity, rated for 250 PSI working pressure and 375 PSI burst pressure without leakage.
Corrosion Resistance: SS316 alloy resists acid exposure and salt spray, cutting hardware replacement and maintenance costs in marine applications.
Lower Pumping Energy: Smooth cast bores reduce internal fluid friction and pressure drop, lowering energy consumption in industrial pumping systems.
Custom Capabilities
Engineering Drawing Support
Direct working capabilities with SolidWorks, AutoCAD, STEP, IGES, and PDF files provided by your engineering team.
Rapid Prototype Delivery
First-article samples delivered in as fast as 14 business days from 3D design approval, including trial casting and CNC machining.
Custom Barb & Shank Configurations
Tailored barb depths, multi-serration geometries, integrated hex flats, and custom flange transitions engineered.
Custom Marking
Cast-in or laser-etched part numbers, logos, pressure ratings, and heat numbers.
Quality Verification
Precision CNC Machining: 18 CNC lathes and vertical centers machine critical coupling dimensions within ±0.01 mm tolerances.
Pressure & Leak Testing: Every unit passes a 0.6 MPa air-under-water leak test to detect microporosity, in addition to a separate hydrostatic proof test at 375 PSI (1.5x rated working pressure) to verify structural integrity.
Zeiss CMM Dimensional Audits: Zeiss Coordinate Measuring Machines verify key dimensions on 5% of each production batch (Cpk > 1.33).
Material Traceability: Official inspection certificates with exact heat chemical analysis and mechanical data accompany every shipment.
Packaging
Anti-Rust Sealed Packaging
Plastic thread guards and VCI anti-corrosion bags with desiccant during ocean transit.
01
ISPM-15 Export Crates
Heavy-duty heat-treated plywood crates support up to 1,500 kg stacking loads.
02
Trade Terms
Full support for FOB Shanghai/Ningbo, CIF, CFR, and door-to-door DDP shipping.
03
Production Lead Time
Standard mass production orders ship within 20 to 30 calendar days following sample approval.
04
MOQ
Standard stock sizes start at 100 pieces; fully custom tooling designs start at 50 pieces per unique geometry.
05
Compliance & Certifications
ISO 9001:2015
Certified quality management system ensuring full raw material heat traceability and process control.
RoHS & REACH
Stainless steel alloys fully comply with EU heavy metal concentration limits.
PED 2014/68/EU
Manufactured according to Sound Engineering Practice (SEP) for pressure equipment components.
FAQ
Q: Can the 0.6 MPa air-under-water leak test data for a specific batch be provided as documentation?
A: Yes, batch-specific leak test records including test pressure, duration, and pass/fail results can be provided as part of the standard shipment documentation package.
Q: Can you cast components larger than the standard 25kg maximum weight range for large custom valve bodies?
A: Yes, custom castings up to 80kg are possible using our secondary large-mold casting line, though this requires an extended lead time and a separate tooling quote.
Q: Can you share examples of past custom casting projects for marine or chemical processing clients?
A: Yes, custom SS316 castings have been supplied for offshore platform valve housings and chemical plant pipeline fittings in the Middle East and Southeast Asia; specific references are available through the account manager under NDA.
Q: What happens if a casting batch fails the Cpk>1.33 dimensional audit or hydrostatic test after arrival?
A: Buyers must submit a claim with test evidence within 15 days of port arrival, after which a credit note or free replacement is issued within 10 business days upon verification.
Q: Is there a separate, higher MOQ for Duplex stainless steel custom tooling compared to standard SS304/SS316?
A: Yes, Duplex SS custom tooling requires a minimum of 100 pieces per unique geometry due to specialized melt scheduling.
