Impeller

Custom Engineered Impellers for Industrial Pumps & Compressors

High-precision closed, semi-open, and open impellers manufactured via investment casting, resin sand casting, and 5-axis CNC machining. Mapped to specified hydraulic curves, ISO dynamic balancing classes, and NDT defect-free standards.

Stainless Steel Pump Impeller
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. is a professional manufacturer and supplier of stainless steel pump impellers in China. With over 15 years of experience in silica sol...
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Food Pump Impeller
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high-quality food grade stainless steel pump impellers using advanced silica sol investment casting technology....
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Vacuum Pump Impeller
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high-quality stainless steel vacuum pump impellers using advanced silica sol investment casting technology. Our...
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Closed Radial Flow Pump Impeller
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high-quality closed radial flow pump impellers using advanced silica sol investment casting technology. Our...
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Closed Axial Flow Pump Pump Impeller
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high-quality closed axial flow pump impellers using advanced silica sol investment casting technology. Our...
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Semi-open Impeller Radial Flow Pump Impeller
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high-quality semi-open radial flow pump impellers using advanced silica sol investment casting technology. Our...
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Open Impeller Radial Flow Pump Impeller
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high-quality open radial flow pump impellers using advanced silica sol investment casting technology. Our open...
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Stainless Steel Water Pump Impeller
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high-quality stainless steel water pump impellers using advanced silica sol investment casting technology. Our...
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Mixed Flow Impeller
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high-quality mixed flow impellers using advanced silica sol investment casting technology. Our mixed flow...
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Closed Radial Flow Fan Impeller
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high-quality closed radial flow fan impellers using advanced silica sol investment casting technology. Our...
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Closed Axial Flow Pump Fan Impeller
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high-quality closed axial flow pump fan impellers using advanced silica sol investment casting technology. Our...
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Adjustable Pitch
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high-quality adjustable pitch fan impellers using advanced silica sol investment casting technology. Our...
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Product Range

Impeller Type	Structural Configuration	Primary Application / Media	Standard Outer Diameter
Closed Impellers	Dual-shroud design with internal hydraulic passages	Clear fluids, boiler feed water, high-head chemical transfer	100 mm – 1,800 mm
Semi-Open Impellers	Single back shroud with exposed vane profiles	Viscous liquids, light slurries, fluid suspensions	80 mm – 1,200 mm
Open Impellers	Vanes attached directly to the central hub	Heavy municipal wastewater, paper pulp, high-solid slurries	100 mm – 1,500 mm
Axial & Mixed Flow	Propeller or axial screw profile	High-volume transfer, low-head irrigation, power plant cooling circulation	200 mm – 2,500 mm

Materials & Technical Specifications

Material Selection Matrix

Category	Material Grade & Specification	Target Application & Resistance
Stainless Steel	CF8M (316), CF8 (304), CF3M (316L), 17-4PH	General chemical corrosion and pitting protection
Duplex / Super Duplex	CD4MCu, 2205 (UNS J92205), 2507 (UNS J93400)	Chloride-bearing fluids, seawater applications
Specialty Nickel Alloy	Hastelloy C276, Monel 400, Inconel 625	Highly acidic media and severe chemical processing
Cast & Ductile Iron	ASTM A48 Class 30/35, ASTM A536 65-45-12	Non-corrosive water infrastructure and general utilities
Wear-Resistant Alloy	High-Chrome Iron (ASTM A532 Class III), Ni-Hard	Highly abrasive mining and mineral slurry processing

Manufacturing & Precision Tolerances

Parameter	Specification	Application / Notes
Casting Dimensional Tolerance	ISO 8062 CT4–CT6 (Investment Casting); CT7–CT9 (Resin Sand Casting)	Depends on casting process, dimensions, and geometry
Machining Tolerance	ISO 2768-mK; bore concentricity within 0.015 mm	Subject to drawing requirements and manufacturing capability
Internal Passage Roughness	As-cast Ra 1.6–3.2 µm (Silica Sol); CNC-milled/polished Ra 0.8 µm	Depends on casting finish and machining requirements
Dynamic Balancing Class	ISO 1940-1 Grade G2.5 (specified high-speed applications); Grade G6.3 (specified pump applications)	Balance grade to be confirmed according to rotor design and operating conditions

Manufacturing & Machining Capability

[ Pattern / 3D Wax Mold ] ──► [ Precision Casting & Pouring ] ──► [ Solution Annealing / Heat Tx ] │ [ ISO 1940 Dynamic Balance ] ◄── [ 5-Axis VMC & CNC Turning ] ◄── [ NDT Flaw Inspection (UT/PT) ]

Primary Casting Processes
Silica Sol Investment Casting: For closed impellers up to 600 mm. Produces smooth internal flow passages, reduces hydraulic turbulence, and minimizes material correction during dynamic balancing.
Resin Sand Casting: Configured for large-diameter impellers (up to 2,500 mm) requiring heavy wall thickness and high structural rigidity.

Machining & Vane Profile Finishing
5-Axis VMC Machining: Direct milling from solid forged billets or precision investment castings, allowing tool access to complex shrouded vane curvatures that 3-axis equipment cannot reach.
Bore & Keyway Finishing: Cylindrical and taper bore grinding to maintain shaft fit tolerances and prevent rotational runout.

Quality Control & Verification Protocol

Inspection Item	Test Method / Equipment	Inspection Standard	Delivered Documentation
Chemical Composition	Optical Emission Spectrometry (OES)	ASTM A743 / ASTM A890	Mill Test Report (EN 10204 3.1)
Internal Structural Integrity	Ultrasonic Testing (UT) / Radiographic Testing (RT)	ASTM A609 / ASTM E446	NDT Inspection Report
Surface Micro-Fissures	Liquid Penetrant Testing (PT)	ASTM E165	PT Surface Inspection Report
Dynamic Balance Verification	Two-Plane Balancing Machine	ISO 1940-1 (G2.5 or G6.3, as specified)	Dynamic Balance Test Sheet
Dimensional & Profile Integrity	Coordinate Measuring Machine (CMM) / Extended Probe Gauge	ASME Y14.5 / Approved CAD Drawings	Full CMM Dimensional Inspection Report

OEM Customization Workflow

Production follows direct drawing input (STEP, IGES, 2D PDF) or physical part reverse engineering.

Step 1: Engineering & CFD Flow Review (Draft angles, shrink factors, and hydraulic clearance verified)

Step 2: Rapid Prototyping (3D printed wax/sand patterns for physical fit and initial trial)

Step 3: Tooling & First Article Inspection (Full CMM dimension scan and FAI report submission)

Step 4: Pilot Batch Testing (Material heat verification, NDT testing, dynamic balancing)

Step 5: Serial Production & Heat Number Traceability

Production Lead Times & Packaging

Tooling & Pattern Lead Time: 15 – 25 calendar days (3D printed patterns available in 7 days for urgent prototyping).

Sample / First Article Delivery: 10 – 15 days following pattern sign-off.

Batch Production: 30 – 45 days, subject to material grade, NDT scope, and order volume.

Export Packaging: Reinforced wooden crates with custom foam cradles, anti-corrosion VCI film wrapping, and vane edge guards to prevent impact damage during ocean or air transport.

FAQ

Q: What dynamic balancing standard do your impellers meet prior to dispatch?

A: All impellers undergo dynamic balancing per ISO 1940-1. Standard industrial pump impellers are balanced to Grade G6.3. For high-RPM applications (>2,900 RPM), boiler feed pumps, or compressor wheels, we balance to Grade G2.5 in single-plane or two-plane (dual-plane) setups. Each shipment includes a dynamic balance sheet documenting initial and residual unbalance values.

Q: How do you measure internal vane thickness and passage geometry on closed impellers?

A: We verify internal geometry using Ultrasonic Thickness Gauging (UT) and 3D CMM probing equipped with extended styli. For complex internal hydraulic passages during First Article Inspection (FAI), optical 3D scanning or industrial CT scanning is performed to verify wall thickness consistency against your CAD model.

Q: Can material chemistry be adjusted to match aggressive corrosive media like wet chlorine or sulfuric acid?

A: Yes. We cast impellers in Duplex 2205, Super Duplex 2507, Hastelloy C276, and Titanium Grade 5. Heat treatments—including solution annealing for austenitic and duplex grades—strictly follow ASTM A890 or ASTM A744 specifications. An EN 10204 3.1 Material Test Report with spectrographic analysis and mechanical test data accompanies every shipment.

Q: What is your process for reverse engineering worn or obsolete impellers without technical drawings?

A: We accept worn or field-damaged sample impellers. Our technical team utilizes handheld 3D laser scanning to capture surface profiles and reconstruct original hydraulic geometry, compensating for wear and cavitation erosion. We generate STEP/IGES 3D models, review flow paths using CFD analysis, and manufacture exact-fit replacement parts matching original operating performance.

Q: What non-destructive testing (NDT) standards are applied to detect subsurface defects?

A: Subsurface flaw detection complies with ASTM guidelines based on critical stress zones indicated on your engineering drawings. Ultrasonic Testing (UT) per ASTM A609 and Radiographic Testing (RT) per ASTM E446/E192 are performed on high-pressure castings. Liquid Penetrant Testing (PT) per ASTM E165 is standard across 100% of machined vane surfaces to verify zero micro-porosity.

Q: How are patterns managed and maintained for multi-year OEM supply contracts?

A: Tooling and patterns remain customer property and are stored in indoor, climate-controlled facilities with ID tracking. Preventive maintenance—including dimensional recalibration and surface inspection—is conducted before and after every production run at no additional charge. Patterns are guaranteed for 50,000 casting cycles or 5 years.

WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO.,LTD. is one of the most professional impeller manufacturers and suppliers in China, also supports customized service. Welcome to buy bulk cheap impeller made in China here and get quotation from our factory. For price consultation, contact us.