Product Overview
Shata Machinery is a precision casting manufacturer, specializing in custom production of investment casting stainless steel pump impellers.
We focus on high precision, zero-defect, high-stability industrial-grade pump impeller castings, serving pump and valve OEM manufacturers, equipment supporting enterprises, engineering contractors and spare parts purchasers.
We support non-standard customization, small-batch sampling and large-scale stable supply.
Technical Parameters
| Item | Parameters |
| Casting Process | Investment Casting (lost wax) |
| Available Stainless Steel Grades | 304, 316, CF8, CF8M, CF3, CF3M, 2205, 2507, CA6NM, 1.4408 |
| Heat Treatment | Solution treatment for 304, 316, CF8, CF8M; aging hardening for duplex stainless steel |
| Impeller Types | Closed Impeller, Semi-Open Impeller, Open Impeller |
| Blade Quantity & Thickness & Angle | Customized per customer drawings |
| Hub structure | Customized per customer drawings |
| Keyway specifications | Customized per customer drawings |
| Outer Diameter | 20mm ~ 1000mm |
| Bore Size | As drawing |
| Thin Blade Narrow Channel Impeller | Available for customization |
| Surface Finish | Pickling & passivation, mirror Polishing |
| Surface Roughness | Casting surface Ra6.3; Mirror polished surface Ra ≤1.6μm |
| Machining Tolerance | Min ±0.02mm |
| Casting Tolerance | CT4-CT6 |
| Dynamic Balance Grade | G2.5 / G6.3 according to drawing |
| NDT Inspection | PT, UT |
| MOQ | 100kg |
| Certifications | ISO 9001 |
| Applicable Conditions | Acid and alkali corrosive media, high-salt seawater environment, slurry transportation of silt and sand, high-temperature sewage, sterile fluid, mining slag and slurry |
Which Material is Best for Your Pump Impeller?
- Chemical Centrifugal Pump: 316L, CF3M, 2205
- Sewage / Sludge Pump: 304, 316, 316L, CF8, CF8M, CF3M
- Seawater Desalination / Offshore Pump: CA6NM
- Food & Pharmaceutical Fluid Pump: 304, 316, 316L, CF8, CF8M, CF3M with mirror polished surface
- Mining Slurry Pump: 2507 wear-resistant duplex steel
Pump Types Matching Our Customized Stainless Steel Impellers
Chemical Centrifugal Pumps
- IH-series horizontal stainless steel chemical centrifugal pumps
- FB/AFB corrosion-resistant centrifugal pumps
- Magnetic drive centrifugal pumps
Sanitary Pumps (Food & Pharmaceutical)
- Stainless steel pumps for milk, beverages, and fruit juice; sanitary centrifugal pumps
- Purified water pumps, pharmaceutical transfer pumps, medical dosing pumps
Self-Priming Stainless Steel Pumps
- Corrosion-resistant stainless steel self-priming pumps
- Chemical self-priming pumps
- Self-priming booster pumps for well water
Inline Centrifugal Pumps (Mid-to-High-End Models)
- ISG/IRG vertical inline pumps
- ISW horizontal inline pumps
Stainless Steel Submersible Sewage Pumps
- Corrosion-resistant 304/316 submersible sewage pumps
Marine & Seawater Aquaculture Pumps
- Marine centrifugal pumps
bilge pumps
- Seawater circulation pumps
- Seafood farming circulation pumps
Vortex Pumps / High-Pressure Low-Flow Pumps
- High-pressure vortex pumps
- Boiler feed pumps
Other Specialty Pumps
- High-temperature thermal oil pumps
- Hot water circulation pumps
- Multistage stainless steel centrifugal pumps
Our Quality Control
Wax patter → silica sol multi layer shell → melting & casting → heat treatment → CNC machining → NDT → dynamic balancing → finished product inspection, every step we have dedicated worker to strictly follow and control quality, prevent defective products delivered.
- NDT: PT & UT
- Material: Spectral composition analysis every furnace, supporting furnace number traceability
- Performance: Hardness, salt spray corrosion test, mechanical properties
- Certification: ISO 9001
Compared with sand casting impellers:
- Smoother flow channel
- Higher hydraulic efficiency
- More accuracy dynamic balance, less materials removed
- Vibration free during working
- Lower noise
Compared with other foundries:
- We have better & uniform casting surface (Ra6.3), no pores, no defects
- Reasonable price - Relying on our technological advantages, we promise customers lowest price at same quality level
- 7*24 hours technical team supporting
- Smoother communication- Each of your emails will be replied to within one work day
Mold & Equipment
FAQ
Q: What is your MOQ?
A: For special materials, our MOQ is 500 kg, as our smallest furnace is 500kg.
For common materials, we can accept MOQ 100kg, as we can melt materials together with other same material orders.
Q: How long for impeller mold and samples?
A: Manual investment cast mold: 10-15 days Automatic investment cast mold: 20-30 days according to impeller structure Impeller samples: 30-40 days
Thin-blade narrow-channel closed impellers may be a little longer.
Q: Which stainless steel grade is recommended for highly corrosive working conditions?
A: Common acid and alkali -316L High chloride ion and seawater -CA6NM High-intensity corrosive and wear-resistant - 2205/2507 duplex steel You can contact Shata for free working condition selection.
Q: Can you provide complete material certificates, NDT inspection reports and dynamic balance test documents for all finished impellers?
A: No problem, all QC documents are available
Q: Are the dimensions and flow channel precision of mass-produced impellers consistent?
A: Our constant-temperature wax injection workshop can ensure stable dimensions of wax patterns; we have unifiedcasting and heat treatment processes, batch uniformity fully guaranteed.
Q: If dimensional or casting defects occur in the first small trial order, what is your after-sales solution?
A: Reproduce products free of charge
Q: Besides impellers, can you produce matching stainless steel precision castings such as pump casings and pump covers at the same time?
A: Yes. We can manufacture stainless steel pump casings, pump covers, shaft sleeves and other pump parts with same process and inspection standards, cutting your communication cost with multiple suppliers
Q: Does your quotation include packaging fees?
A: Yes. Packaging fees are included regardless of trade terms, including EXW, FOB, CIF and DDP. No extra packaging cost will be charged separately.
Q: What packaging do you use for export orders?
A: Small impellers: moisture-proof PE bags + paper boxes + crates Bulk orders: soft separation materials + moisture plastic film+ fumigation-free wooden cases
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