The global automotive industry is under constant pressure to reduce costs, shorten lead times, and improve quality. For OEMs and Tier suppliers, the choice of a stamping partner can make or break these goals. While many manufacturers specialize in one aspect of the production chain — tooling alone, or stamping alone — a ｓｅｌｅｃｔ few offer true end-to-end capabilities. One such player is DIAN STAMPING (Linhai Dian Mould Co., Ltd.), a China-based manufacturer with over 20 years of experience in automotive stamping dies, stamped sheet-metal parts, checking fixtures, and welding jigs.

Why Integrated Capabilities Matter

A common pain point in automotive sourcing is the disconnect between die design, die manufacturing, and part production. When a customer commissions a die from one supplier and then sends it to a different stamper, issues often arise: tooling that doesn't run optimally, communication gaps, and extended troubleshooting cycles. Dian Stamping solves this by offering a fully integrated workflow — from die design and tryout to high-volume part stamping, all within a single facility.

Located in Huangyan, Taizhou, Zhejiang Province, the company operates a modern facility covering approximately 50,000 m², with a dedicated die workshop of about 4,000 m². This scale allows them to produce around 2,000 sets of medium and small stamping dies annually, with an annual die turnover of approximately RMB 50 million. The company is also investing in a new 35,000 m² facility featuring advanced press and coating lines, further expanding its manufacturing capacity.

Precision Tooling for Complex Automotive Parts

At the heart of Dian Stamping's offering is its expertise in progressive die stamping. The company designs and manufactures progressive dies, transfer dies, and tandem/multi-station dies for a wide range of automotive applications. These include body-in-white components, door systems, seating systems, instrument panels, fuel-tank systems, exhaust systems, clutch systems, and chassis systems.

The die design team comprises approximately 35 experienced designers and technicians who work with advanced CAD/CAM software to develop tooling that meets the strict tolerances required by modern automotive manufacturing. The company is capable of processing multiphase steel, aluminum, custom rolled and welded plate, and stainless steel — a material range that covers the needs of most automotive programs.

Sheet Metal Parts: From Prototype to High-Volume Production

Beyond tooling, Dian Stamping is a full-fledged sheet metal parts manufacturer. The company produces custom stamped parts for both automotive and household appliance industries, with capabilities that include laser cutting, bending, forming, welding, and powder coating. Customers can submit 2D drawings, 3D data, or physical samples for prototyping, and the company delivers production-ready parts with consistent quality.

The company's stamping expertise extends to working with materials such as JAC270CN, SPC440, stainless steel, and aluminum alloys. Secondary operations — including deburring, spot welding, hemming, and flanging — are performed in-house, ensuring that parts arrive at the customer's assembly line ready for use.

Quality Assurance Through Checking Fixtures and Welding Jigs

What sets Dian Stamping apart from many stamping die manufacturers is its in-house capability to produce checking fixtures and welding jigs. A checking fixture is essential for verifying that stamped parts meet dimensional specifications, especially when complex geometries make traditional measurement tools impractical. Dian Stamping designs and builds high-precision, GD&T-oriented checking fixtures that allow rapid, repeatable inspection of production parts.

Similarly, the company's welding jigs ensure accurate positioning and repeatable welding for automotive assemblies. From chassis welding jigs and spot welding jigs to rotating welding jigs and 3-axis fixtures, the company provides custom solutions that streamline assembly operations and reduce defects.

The company's quality management system is ISO 9001 certified, and it follows IATF 16949-oriented automotive manufacturing practices. This commitment to quality is reflected in its customer base, which includes global OEMs such as KIA, BYD, Toyota, Honda, Suzuki, and Geely, as well as exports to more than 10 countries.

Factory-Direct Pricing and Global Delivery

As a factory rather than a trading company, Dian Stamping offers competitive pricing that reflects actual manufacturing costs rather than intermediary markups. Typical delivery times are 30–40 days for steel stamping dies and approximately 70 days for casting stamping dies, depending on project complexity. The company also offers free metal samples (with freight paid by the customer) to help buyers evaluate material quality before committing to full production.

With a team of around 110 employees, including 35 die designers and technicians, the company balances scale with personalized service. Each project is managed by experienced engineers who guide the customer from initial design review through tool tryout and production ramp-up.

Why Automotive OEMs Choose Dian Stamping

Several factors make Dian Stamping a compelling partner for automotive sourcing:

• End-to-end integration: Dies, stamping, checking fixtures, and welding jigs under one roof — reducing coordination risk and accelerating time to market.
• Proven OEM track record: Serving KIA, BYD, Toyota, Honda, Suzuki, and Geely, with exports to over 10 countries across Asia, Europe, and the Americas.
• Scalable capacity: 50,000 m² facility, 2,000 die sets per year, and a new 35,000 m² plant under development.
• Broad material capability: Multiphase steel, aluminum, stainless steel, and custom alloys — covering body-in-white, chassis, powertrain, and structural applications.
• Quality systems: ISO 9001 certified with IATF 16949-oriented practices, supported by precision checking fixtures and CMM inspection.
• Competitive lead times: 30–40 days for steel dies, 70 days for casting dies, with fast prototype services available.