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At Tianchen, we provide comprehensive technical support to ensure our cold-drawn steel products meet the highest performance requirements across demanding industries. With strong engineering expertise and extensive manufacturing experience, we support customers from material selection to final application.
Our advanced cold-drawing process ensures:
Dimensional tolerance: h7–h9 (up to ±0.03 mm)
Surface roughness: ≤ 1.6 μm
Straightness: ≤ 1 mm / 1000 mm
Ensuring stable quality and consistency for high-precision applications.
Experienced engineering and technical team
Continuous process optimization and innovation
Strong capability in customized profile development
We support both standard products and complex custom requirements.
Our production is certified under internationally recognized systems:
ISO 9001 – Quality Management
IATF 16949 – Automotive Quality
ISO 14001 – Environmental Management
ISO 45001 – Occupational Health & Safety
Ensuring full-process quality control from raw materials to finished products.
2,000+ product specification database
Multi-standard support (EN / ASTM / JIS / GB)
Professional material recommendation
Cold drawing process guidance
Complex profile forming solutions
Surface treatment optimization
Structural strength analysis
Installation solution support
Machining parameter optimization
We operate a comprehensive in-house inspection system:
Eddy current testing
Ultrasonic testing
Spectrometer analysis
Metallographic inspection
Mechanical property testing
Hardness testing
All products are fully inspected with complete traceability.
Product selection guidance
Technical parameter confirmation
Sample testing support
Response within 24 hours
Joint development of new products
Technical problem-solving
Process optimization support
Ongoing technical communication
Priority support for new projects
Dedicated technical service channel
Stable and reliable product quality
Full-process quality control
Complete traceability system
On-time delivery
Sample testing within 3–5 working days
Technical solutions within 7 working days
Full-process technical support
Fast response to customer needs
Continuous after-sales service
Tianchen adopts a fully controlled cold-drawn manufacturing process to ensure high precision, consistent quality, and stable performance across all products.
1. Raw Material Inspection
2. Heat Treatment
3. Surface Preparation (Shot Blasting)
4. Cold Drawing
5. Straightening
6. Precision Cutting
7. Quality Inspection
8. Grinding & Finishing
9. Packaging & Storage
Tolerance Grade: h7–h9 (up to ±0.03 mm)
Surface Roughness: ≤ 1.6 μm
Straightness: ≤ 1 mm / 1000 mm
Strength Improvement: 20–30% higher than hot-rolled steel
This ensures our products meet the requirements of high-precision and high-performance applications.
Equipped with advanced machinery and automated systems, Tianchen ensures efficient production, consistent quality, and reliable delivery.
Cold Drawing Machines (Max. drawing force: 200 tons)
Straightening Machines (Accuracy: ±0.05 mm)
CNC Cutting Equipment (Cutting accuracy: ±0.5 mm)
Annual output: 50,000 tons
2,000+ product specifications
24/7 continuous production capability
Round bars: Ø4–120 mm
Square bars: 4×4 mm – 90×90 mm
Hexagonal bars: S6 – S75
Flat bars: 3×8 mm – 11×120 mm
Special profiles: Custom dimensions
Automated process control (CNC + PLC systems)
Real-time production monitoring
Flexible manufacturing for custom orders
Fast changeover for different specifications
Tianchen operates a comprehensive laboratory and inspection system to ensure full quality control from raw material to finished products.
Eddy Current Testing (surface defects ≥ 0.1 mm)
Ultrasonic Testing (internal defects ≥ 0.3 mm)
Hardness Testing (HB / HRC)
Spectrometer Analysis (chemical composition)
Metallographic Analysis (microstructure)
Tensile & Mechanical Testing
Digital Dimensional Inspection
Full-process quality control and traceability
Material certification and validation
Failure analysis and technical support
Detailed inspection reports for every batch
ISO 9001 / IATF 16949
ISO 14001 / ISO 45001
EN / ASTM / JIS / GB standards compliance
Our advanced testing capabilities ensure consistent product quality and reliability for demanding global industries.
