In the competitive world of automotive manufacturing, the success of a vehicle program often hinges on the quality and reliability of its tooling. From body-in-white components to intricate seating and chassis systems, precision metal stamping is the backbone of modern vehicle production. Choosing the right stamping die manufacturers is not merely a procurement decision — it is a strategic partnership that directly impacts cost, quality, and time-to-market.

LINHAI DIAN MOULD CO., LTD (Dian Stamping Company), established in 2003 and headquartered in Huangyan, Taizhou, Zhejiang Province, has been serving global automotive OEMs and Tier 1 suppliers for more than two decades. With a 50,000 m² modern facility, a dedicated die workshop of 4,000 m², and a team of approximately 110 employees including 35 seasoned die designers and technicians, Dian Stamping offers a comprehensive one-stop solution for automotive stamping dies, stamped sheet-metal parts, checking fixtures, welding jigs, and assembly services.

A Manufacturing Powerhouse by the Numbers

When evaluating a tooling partner, capacity and scale matter. Dian Stamping's production capabilities speak for themselves:

• 50,000 m² Modern Facility
• 2,000+ Dies per Year
• 20+ Years of Experience
• 10+ Export Countries

The company's annual die turnover of approximately RMB 50 million reflects its established position in the market. Furthermore, a planned 35,000 m² expansion featuring new press lines and advanced coating facilities will significantly boost capacity in the near future, ensuring that Dian Stamping can meet growing global demand for high-quality automotive tooling.

Comprehensive Stamping Die Solutions

Dian Stamping specializes in the design and manufacture of a full spectrum of stamping dies, including:

• Progressive Dies — Ideal for high-volume production of complex parts with multiple operations performed in a single press stroke.
• Transfer Dies — Designed for large and medium-sized parts requiring inter-station transfer, offering excellent material utilization and dimensional consistency.
• Tandem / Multi-Station Dies — Used for larger panels and structural components, enabling efficient production of body-in-white and chassis parts.

The company processes a wide range of materials including multiphase steel, aluminum alloys, custom rolled and welded plate, and stainless steel. This material versatility allows Dian Stamping to serve diverse applications across body-in-white, door systems, seating systems, instrument panels, fuel-tank systems, exhaust systems, clutch systems, and chassis systems.

Precision Sheet Metal Parts and Assembly Services

Beyond tooling, Dian Stamping is a full-service provider of stamped sheet-metal parts for both automotive and household-appliance industries. The company's capabilities include high-volume production of brackets, panels, hinges, structural reinforcements, and welding assemblies using advanced progressive and transfer stamping techniques.

Secondary operations such as laser cutting, bending, welding, and surface coating are performed in-house, delivering assembly-ready components that reduce lead times and streamline the supply chain for OEM customers.

Checking Fixtures: Ensuring Dimensional Accuracy

In precision manufacturing, verifying that every stamped part meets its design specifications is non-negotiable. Dian Stamping provides high-precision checking fixture solutions designed to quickly and reliably confirm whether a manufactured workpiece conforms to specified dimensions. These fixtures eliminate individual measurement variations and enable rapid inspection of large batches, making them indispensable at production sites where press dies and checking fixtures must work as a set.

The company's checking fixtures are engineered in accordance with GD&T principles and are compatible with a wide range of stamped components and welded assemblies, supporting both prototype validation and mass-production quality control.

Welding Jigs and Fixtures for Reliable Assembly

Consistent, repeatable welding is essential for structural integrity in automotive assemblies. Dian Stamping designs and manufactures custom welding jigs that position and hold components with precision during the welding process. Whether for spot welding, arc welding, or robotic welding cells, the company's welding fixtures ensure accurate alignment, reduce rework, and improve production throughput.

Quality Assurance and Certifications

Quality is embedded in every stage of Dian Stamping's manufacturing process. The company operates under an ISO 9001 quality-management system and follows IATF 16949-oriented automotive manufacturing and quality practices. From incoming material inspection to in-process monitoring and final dimensional validation using CMM and 3D scanning, every component is rigorously checked to meet OEM specifications.

Customization is available from 2D drawings, 3D data, or physical samples, and prototype services are offered to support new product development. Typical delivery is 30-40 days for steel stamping dies and approximately 70 days for casting stamping dies, subject to project requirements.

Global Customer Partnerships

Dian Stamping's commitment to quality and reliability has earned the trust of leading automotive brands worldwide. The company serves OEM customers including KIA, BYD, Toyota, Honda, Suzuki, and Geely, and exports to more than 10 countries across Asia, Europe, and the Americas. As a factory-direct manufacturer rather than a trading company, Dian Stamping offers competitive pricing, direct communication, and full traceability from raw material to finished product.