Reliable Quality Assurance for Stainless Steel Castings & Machined Components
At Suzhou Fuyikang Metal Industrial Co., Ltd., quality is built into every stage of our manufacturing process.
From raw material verification and investment casting to CNC machining and final inspection, we maintain strict process control to ensure our stainless steel castings, industrial quick couplings, valve components, and custom machined parts meet customer specifications and perform reliably in demanding applications.
Through standardized inspection procedures, advanced testing equipment, and complete production traceability, we are committed to delivering consistent quality and dependable manufacturing solutions.
Quality Commitment
At Fuyikang, quality control starts from material selection and continues through every stage of production.
We focus on:
Quality Inspection Process
To ensure product consistency, we apply quality control throughout the entire manufacturing process.
Before production begins, all raw materials are verified to ensure they meet the required specifications.
Our incoming inspection includes:
Material certificate verification
Chemical composition analysis
Visual inspection
Batch identification and recording
For stainless steel materials such as SS304 and SS316, chemical composition is verified using an optical emission spectrometer to confirm material grade and consistency.
Quality monitoring continues throughout the production process, including:
Wax pattern production
Silica sol shell making
Casting process control
Shot blasting
CNC machining
Key production parameters and critical dimensions are monitored to identify potential issues early and maintain stable product quality.
Before shipment, finished products are inspected according to customer drawings, specifications, and internal quality requirements.
Inspection items include:
Critical dimensions
Thread accuracy
Sealing surfaces
Surface finish
Product appearance
For critical components, additional inspections or 100% inspection can be performed according to application requirements.
Before delivery, we verify:
Product quantity
Packaging condition
Labels and identification
Required inspection documents
This ensures products are properly prepared for safe transportation and customer use.
Material Verification & Traceability
Reliable products start with reliable materials.
We maintain material traceability throughout the manufacturing process. Each production batch is identified through records connecting raw material information, casting batches, machining processes, and finished products.
Material verification includes:
Optical emission spectrometer analysis
Material certificate review
Heat/batch number tracking
Material certificates such as EN 10204 3.1 can be provided upon request to support customer quality requirements and supply chain management.
Advanced Testing & Measurement Capabilities
We employ precision calibration and testing instruments to ensure strict tolerance control and material integrity:
|
Inspection Equipment |
Purpose |
|
Optical Emission Spectrometer |
Verify SS304/SS316 chemical composition and material grade. |
|
Coordinate Measuring Machine (CMM) |
Measure complex dimensions and positional accuracy |
|
Hardness Tester |
Verify material hardness and mechanical properties. |
|
Surface Roughness Tester |
Check surface finish quality. |
|
Thread Gauges |
Verify BSP, NPT, and metric thread accuracy. |
|
Pressure & Leak Test Equipment |
Confirm sealing performance and pressure reliability. |
All measuring equipment is regularly maintained and calibrated to ensure accurate inspection results.
Dimensional Control & Casting Tolerances
Our silica-sol investment casting process naturally delivers smoother surfaces and tighter dimensional consistency than traditional sand or water-glass casting:
Casting Tolerance Standard
Controlled according to ISO 8062 (CT5 – CT7).
CNC Machining Tolerance
Precision turning and milling specified per customer technical drawings.
Critical Sealing Control
100% verification on critical sealing faces and mating profiles for Camlock, Guillemin, and valve body connections.
Quality Issue Management
Any product that does not meet inspection requirements is identified, separated, and reviewed before shipment. Corrective actions are taken to analyze the cause, improve the manufacturing process, and prevent similar issues from occurring again.
Continuous Improvement
By combining experienced manufacturing practices, advanced inspection equipment, and systematic process control, we continuously improve product consistency, production efficiency, and customer satisfaction.
Whether you require standard industrial couplings or customized stainless steel castings and machined components, we are committed to providing reliable manufacturing support for long-term cooperation.