Castings

Custom Engineered Metal Castings for Industrial OEMs

High-integrity investment, sand, and precision shell mold castings manufactured to strict ASTM, EN, and ISO standards. Engineered for zero internal porosity, tight dimensional control, and reliable mechanical performance in heavy equipment, fluid control, and machinery applications.

Food Pump Casing
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high-quality food grade stainless steel pump casings using advanced silica sol investment casting technology....
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Stainless Steel Pump Casting
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high-quality stainless steel pump castings using advanced silica sol investment casting technology. Our pump...
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Vacuum Pump Casting
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high-quality stainless steel vacuum pump castings using advanced silica sol investment casting technology. Our...
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Pump Investment Casting
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high-quality pump investment castings using advanced silica sol investment casting technology. Our pump castings...
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Stainless Steel Precision Investment Pump Castings
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high-quality stainless steel precision investment pump castings using advanced silica sol investment casting...
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High Quality Industrial Metal Pump Castings
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high quality industrial metal pump castings using advanced silica sol investment casting technology. Our...
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Nickel-Based Alloy Castings
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high-quality nickel-based alloy castings using advanced silica sol investment casting technology. Our...
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Corrosion Resistant Chemical Grade Pump Castings
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing corrosion resistant chemical grade pump castings using advanced silica sol investment casting technology. Our...
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Professional OEM Manufacturing Stainless Pump Castings
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. is a professional OEM manufacturer of stainless pump castings using advanced silica sol investment casting technology. Our OEM stainless pump...
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High-Precision OEM Stainless Steel Machining Pump Castings
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high-precision OEM stainless steel machining pump castings using advanced silica sol investment casting...
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Precision Investment Casting Stainless Valve Parts
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing precision investment casting stainless valve parts using advanced silica sol investment casting technology. Our...
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High Pressure Corrosion Resistant Valve Castings
WUDI COUNTY SHUN YE STAINLESS STEEL PRODUCTS CO., LTD. specializes in manufacturing high pressure corrosion resistant valve castings using advanced silica sol investment casting technology. Our...
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Product Range

Casting Process	Typical Weight Range	Dimensional Tolerance	Primary Applications
Silica Sol Investment Castings	0.1 kg – 120 kg	ISO 8062 CT4–CT6	Complex pump impellers, valve bodies, medical hardware, small brackets
Resin Sand / Shell Mold Castings	10 kg – 3,000 kg	ISO 8062 CT7–CT9	Large gearboxes, heavy compressor housings, structural machinery frames
Lost Foam Castings	5 kg – 500 kg	ISO 8062 CT7–CT8	Complex automotive engine blocks, intricate multi-channel manifolds
Centrifugal Castings	OD: 100 mm – 2,000 mm	Machining tolerance: ±0.05 mm	Heavy-duty industrial sleeves, cylindrical bushings, tube rolls

Materials & Technical Specifications

Material & Compliance Matrix

Metal Category	Standard Grades	Primary Mechanical Focus
Carbon & Alloy Steel	ASTM A27, ASTM A216 WCB/WCC, 4140, 8620, AISI 1045	High tensile load, structural rigidity
Stainless Steel	CF8 (304), CF8M (316), CF3M (316L), 17-4PH	Aqueous corrosion and oxidation resistance
Ductile & Grey Iron	ASTM A536 65-45-12, 80-55-06; ASTM A48 Class 30/35/40	Vibration damping and compressive strength
Aluminum Alloys	A356.0, A380.0, AlSi7Mg (Permanent Mold / Sand Casting)	High strength-to-weight ratio and thermal conductivity
Wear-Resistant Alloy	High-Chrome Iron (ASTM A532 Class III), Hadfield Manganese Steel	Severe abrasive slurry and impact resistance

Critical Manufacturing Standards

Parameter	Standard / Capability	Description
Casting Tolerances	ISO 8062-3 CT4–CT9	Tolerance grades selected according to the casting process and component requirements
Machining Precision	ISO 2768-mK; CNC turning and milling tolerances within ±0.015 mm	Subject to drawing specifications, geometry, and manufacturing capability
Heat Treatment Capabilities	Solution Annealing, Normalizing, Quenching & Tempering (Q&T), Case Hardening, Stress Relieving	Selected according to material grade and required mechanical properties

Manufacturing & Machining Capability

Workflow
Pattern & Tooling: 3D CNC programming and rapid pattern fabrication.
Molding & Pouring: Induction melting furnaces with precise alloy control.
Heat Treatment: Solution annealing, quenching, and tempering.
NDT Inspection: Ultrasonic (UT), Radiographic (RT), and Penetrant (PT) testing.
CNC Machining: 4/5-axis VMC and precision turning.
Dimensional Audit: 3D CMM inspection and coordinate verification.

Foundry & Core Making
Induction Melting Furnaces: Dual-lining medium-frequency furnaces ranging from 500 kg to 5-ton capacity, ensuring precise alloy composition control and low gas content.
Core Shooters & Sand Reclamation: Automated cold-box and resin-sand core production systems to maintain internal cavity stability and prevent gas blowholes.

In-House Machining Integration
CNC Horizontal & Vertical Machining Centers: Equipped with multi-pallet changers to machine critical mounting faces, bores, and threads directly from the as-cast datum.
Rough & Finish Turning Lathes: Capable of handling large-diameter flanges, rings, and cylindrical casting profiles up to 2,500 mm swing diameter.

Quality Control & Verification Protocol

Inspection Item	Testing Method & Equipment	Governing Standard	Delivered Documentation
Chemical Composition	Optical Emission Spectrometer (OES)	ASTM E415 / ASTM A751	Mill Test Certificate (EN 10204 3.1)
Mechanical Properties	Universal Testing Machine / Brinell or Rockwell Hardness Tester	ASTM E8 / ASTM E10	Mechanical Test Report
Internal Integrity	Ultrasonic Testing (UT) / Radiographic Testing (RT)	ASTM A609 / ASTM E446	NDT Inspection Certificate
Surface Micro-Defects	Liquid Penetrant Testing (PT)	ASTM E165	PT Inspection Report
Dimensional Verification	3D Coordinate Measuring Machine (CMM) / Laser Scanning	ASME Y14.5 / Approved CAD Drawings	Full CMM Inspection Report

OEM Customization Workflow

Engineering & Feasibility Review

Draft angles, shrinkage allowances, and gating design analyzed.

Tooling & Pattern Fabrication

Metal tooling or 3D printed rapid patterns built.

First Article Inspection (FAI)

Trial pouring, destructive testing, and full CMM dimension report.

Pilot Production Run

Batch verification of mechanical properties and NDT compliance.

Mass Production & Heat Traceability

Serialized production with full documentation package.

Production Lead Times & Packaging

Tooling / Pattern Lead Time: 15 – 25 calendar days (7 days for urgent 3D-printed rapid patterns).

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

Batch Manufacturing: 30 – 45 days, depending on alloy grade, heat treatment cycles, and order volume.

Export Packaging: Fumigation-free wooden crates lined with VCI (Volatile Corrosion Inhibitor) moisture barrier film, secure internal blocking, and edge protection to withstand international maritime transport.

FAQ

Q: How do you prevent internal shrinkage porosity and micro-cavities in heavy-section steel castings?

A: We utilize computer-aided casting simulation software (SolidCast/ProCAST) prior to tooling fabrication to model solidification behavior, thermal gradients, and riser placement. This ensures directional solidification feeds heavy sections properly, eliminating subsurface shrinkage voids in critical stress zones.

Q: Can you provide EN 10204 3.1 certified test reports with every casting batch?

A: Yes. Every shipment includes an EN 10204 3.1 Mill Test Certificate containing actual ladle analysis results from optical emission spectrometry, mechanical tensile test data, impact energy values (Charpy V-notch when specified), and relevant heat treatment logging curves.

Q: What is your standard procedure for handling customer-owned patterns and tooling?

A: Customer tooling and patterns remain proprietary property and are stored in climate-controlled, secure indoor facilities with unique identification tagging. Preventive maintenance—including dimensional verification, vent cleaning, and wear repair—is performed before and after each production run at no extra charge.

Q: What non-destructive testing (NDT) methods do you apply for pressure-containing castings?

A: For pressure-retaining components such as valve bodies and pump casings, we perform Radiographic Testing (RT) per ASTM E446 and Ultrasonic Testing (UT) per ASTM A609 on critical stress areas specified in your engineering drawing. Liquid Penetrant Testing (PT) is applied to 100% of machined surfaces to confirm zero surface cracking.

Q: How do you ensure dimensional consistency between prototype samples and mass production runs?

A: During First Article Inspection (FAI), we perform complete 3D CMM coordinate measurement against your native CAD model. Tooling adjustments are made immediately if dimensional deviations exceed 10% of the total tolerance band. Once approved, the master pattern and CNC machining fixture coordinates are locked to ensure serial consistency.

Q: What file formats do you accept for engineering drawing review and quotation?

A: We accept 3D native and neutral CAD formats including STEP, IGES, SolidWorks (.sldprt/.slddrw), and Parasolid, alongside 2D PDF manufacturing drawings containing explicit notes regarding surface finish, geometric tolerancing (GD&T), heat treatment hardness ranges, and designated NDT inspection zones.

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