Quality Control
Quality Built into Every Manufacturing Stage
At Wuxi Chengxingchuang Metal Products Co., Ltd., quality control is integrated throughout the entire manufacturing process - from raw material inspection to final product delivery.
Supported by our ISO 9001 quality management system, we follow standardized production procedures and inspection processes to ensure consistent dimensions, reliable performance, and stable product quality for global customers.
Whether supplying standard steel tubes or customized fabricated components, we focus on delivering products that meet customer specifications and project requirements.
Our ISO 9001 quality management system provides a structured framework for production control, inspection management, documentation, and continuous improvement.
Through standardized procedures and controlled workflows, we ensure every order follows consistent manufacturing requirements from production preparation to final shipment.
Raw Material Inspection
Before production begins, incoming steel coils are inspected to verify material specifications, dimensions, and surface conditions.
Quality checks include:
Material specification verification & heat number tracking
Coil thickness and width inspection
Surface condition & defect inspection
Mill Test Certificate (MTC) verification
Production Process Control
Quality control continues during every production stage. Our production team monitors key parameters during forming, welding, sizing, and cutting processes to maintain product accuracy and consistency.
Production control focuses on:
Forming accuracy & angle alignment
High-frequency welding quality & seam levelling
Tube outer dimensions and roundness
Surface condition monitoring
Process stability across high-volume runs
Dimensional accuracy is critical for steel tubes used in construction, machinery, solar structures, and industrial applications.
Using calibrated measuring instruments (micrometers, digital calipers, and length gauges), our inspection procedures verify that finished products meet customer requirements for size, shape, and length.
Inspection items include:
Outer diameter measurement
Wall thickness checking
Length verification (+/- 0.5 mm tolerance control)
Straightness & angularity inspection
Cross-section shape accuracy checking
Surface & Coating Inspection
For pre-galvanized steel pipes, hot-dip galvanized tubes, and zinc-aluminum-magnesium (ZAM) coated profiles, coating quality plays a crucial role in corrosion resistance and service life.
We utilize digital coating thickness gauges to inspect surface conditions and verify zinc coverage across every batch.
Inspection includes:
Surface appearance & smooth finish inspection
Digital coating thickness verification (measured in microns or g/m²)
Coating adhesion & consistency checking
Final Product Inspection
Before packaging and shipment, finished products undergo final inspection to confirm compliance with production requirements. Final inspection ensures products are properly prepared for international transportation and customer use.
Final checks include:
Overall product appearance & end chamfering
Final dimensional sampling
Quantity verification & bundle weight tracking
Export packaging & bundle strapping condition
Product identification labels
Product Traceability
We maintain production records throughout the manufacturing process to improve quality control and product traceability. From raw material information to finished product inspection records, controlled documentation helps support consistent production management and customer requirements.
Quality Assurance for Global Customers
Through standardized manufacturing processes, strict inspection procedures, and ISO 9001 quality management, Wuxi Chengxingchuang Metal Products Co., Ltd. provides reliable steel tubes and customized steel solutions for customers worldwide.
We are committed to supporting long-term partnerships through consistent quality, professional communication, and dependable delivery.