The global automotive industry demands ever-higher standards of precision, durability, and cost efficiency in metal forming. At the heart of every well-built vehicle lies a network of stamped components — from body panels and structural reinforcements to brackets and brackets — each produced with tooling that must hold tight tolerances through millions of cycles. Choosing the right stamping die manufacturers is therefore a strategic decision that directly impacts product quality, production uptime, and total cost of ownership.

A Trusted Partner Since 2003

LINHAI DIAN MOULD CO., LTD (Dian Stamping) has been a dedicated manufacturer of automotive stamping dies and stamped metal components for over two decades. Headquartered in Huangyan, Taizhou, Zhejiang Province — a region long recognized as a hub for precision mold and die manufacturing — the company operates a modern facility spanning approximately 50,000 m², including a dedicated die workshop of 4,000 m². With a skilled team of around 110 employees, among them roughly 35 die designers and technicians, Dian Stamping combines deep engineering expertise with hands-on manufacturing experience.

Comprehensive Die Manufacturing Capabilities

Dian Stamping specializes in a full spectrum of stamping tooling solutions, delivering an annual capacity of approximately 2,000 sets of medium and small stamping dies. The company's die portfolio includes:

• Progressive Dies — multi-station tooling for high-speed, high-volume production of complex parts, with strip feeding through consecutive stations for cutting, forming, and finishing in a single press cycle.

• Transfer Dies — designed for larger and more intricate components where individual workpieces are transferred between press stations by a transfer system, ideal for deep-drawn and multi-operation parts.

• Tandem / Multi-Station Dies — a series of individual dies arranged in a tandem press line, offering flexibility for mid-to-high-volume production runs with quick die changeovers.

These progressive stamping dies and related tooling are engineered to process a wide range of materials, including multiphase steel, aluminum alloys, custom rolled and welded plate, and stainless steel, enabling the company to serve diverse automotive applications.

End-to-End Automotive Applications

Dian Stamping's dies and stamped parts are found across critical vehicle systems. The company's application coverage includes body-in-white (BIW) components such as side frames, spare tire wells, and A-pillar upper inner panels; door system parts including hinge reinforcement plates, water-cut reinforcement panels, and guides; seating system components like seat basins, support beams, and B-pillar liners; as well as instrument panel structures, fuel-tank system parts, exhaust system heat shields, and chassis components. This breadth of capability means that OEMs and Tier-1 suppliers can consolidate their tooling needs with a single qualified partner.

Beyond Dies: A One-Stop Manufacturing Partner

What sets Dian Stamping apart from many tooling shops is its ability to deliver not only the die but also the finished part. The company's service portfolio extends across four integrated areas:

• Stamping Dies — precision tooling design, fabrication, tryout, and maintenance for progressive, transfer, and tandem stamping systems.

• Sheet Metal Parts — high-volume stamping, sheet-metal fabrication, laser cutting, bending, welding, and assembly of custom metal parts for automotive and household appliance industries.

• Checking Fixtures — high-precision, GD&T-oriented inspection fixtures that verify dimensional conformity of stamped and welded assemblies, eliminating measurement variation and accelerating quality sign-off.

• Welding Jigs — custom-designed welding fixtures that ensure accurate positioning, repeatable weld quality, and efficient assembly flow for complex automotive structures.

This vertically integrated model means that customers can source tooling, production parts, inspection fixtures, and assembly aids from a single factory — simplifying supply chain management, reducing lead time, and avoiding the coordination overhead of multiple vendors.

Quality Systems and Certifications

Dian Stamping's quality management system is built on ISO 9001 standards, and the company follows IATF 16949-oriented practices throughout the manufacturing process. In-line inspections, CMM (coordinate measuring machine) verification, and systematic SPC (statistical process control) are applied to ensure that every die and stamped part meets OEM dimensional and performance specifications. The company also offers prototype services, allowing customers to validate design and fit before committing to full production tooling.

Global Customer Base and Market Reach

Over its 20+ year history, Dian Stamping has built a global customer portfolio that includes KIA, BYD, Toyota, Honda, Suzuki, and Geely, among others. The company exports to more than 10 countries, delivering stamping dies, sheet metal parts, checking fixtures, and welding jigs to automotive OEMs and Tier suppliers worldwide. With a reported annual die turnover of approximately RMB 50 million, the company is currently expanding its capacity with a new 35,000 m² facility featuring advanced press and coating lines.

Customization and Delivery

Dian Stamping accepts custom orders based on 2D drawings, 3D CAD data (CATIA, SolidWorks, or AutoCAD), or physical samples. Typical lead times are 30–40 days for steel stamping dies and approximately 70 days for casting stamping dies, depending on complexity and project scope. Free metal samples are available upon request (with freight paid by the customer), enabling prospective clients to evaluate quality firsthand before placing production orders.