When automotive OEMs and Tier-1 suppliers look for a manufacturing partner capable of handling complex automotive stamping dies, sheet metal parts, and precision assembly fixtures, they need more than just a supplier 鈥?they need a collaborator with proven engineering depth, rigorous quality control, and the production scale to meet demanding delivery schedules. Located in Taizhou, Zhejiang Province, LINHAI DIAN MOULD CO., LTD (Dian Stamping) has been delivering exactly that since 2003.

Two Decades of Die Engineering Excellence

With over 20 years of industry experience, Dian Stamping has built a reputation for precision die engineering that serves some of the world's most recognizable automotive brands, including KIA, BYD, Toyota, Honda, Suzuki, and Geely. The company's modern facility spans approximately 50,000 m虏, with a dedicated die workshop of 4,000 m虏 staffed by around 110 employees 鈥?including roughly 35 experienced die designers and technicians.

This engineering depth translates directly into production capability. Dian Stamping achieves an annual output of approximately 2,000 sets of medium and small stamping dies, with a reported annual die turnover of around RMB 50 million. A new 35,000 m虏 facility currently in development will add even more press and coating line capacity, signaling the company's long-term commitment to growth.

Comprehensive Die Types for Every Application

Not all stamping applications are the same, and Dian Stamping's die portfolio reflects that diversity. The company manufactures progressive dies for high-speed, multi-stage operations, transfer dies for complex parts requiring multiple forming steps, and tandem/multi-station dies for large panels and structural components. Material versatility is another strength 鈥?the team routinely processes multiphase steel, aluminum alloys, custom rolled and welded plate, and stainless steel.

Application areas span the full vehicle architecture: body-in-white panels, door systems, seating components, instrument panel supports, fuel-tank and exhaust system parts, clutch assemblies, and chassis structures. Whether it is a deep-drawn oil pan, a high-strength B-pillar reinforcement, or a precision battery case, the tooling is engineered to produce consistent, repeatable results across high-volume production runs.

Precision Inspection with Checking Fixtures

Quality assurance in automotive manufacturing goes beyond the press line. Every stamped component must be verified against its design specifications, and that is where checking fixture technology plays a critical role. Dian Stamping designs and builds high-precision checking fixtures that allow operators to inspect complex geometries 鈥?parts that would be difficult or time-consuming to measure with calipers or micrometers 鈥?quickly and reliably.

These fixtures are built around GD&T principles and are tailored to each part's unique datum structure. By combining press dies with matching checking fixtures as a set, Dian Stamping eliminates individual measurement variation and ensures that every part leaving the facility meets OEM-specified tolerances. This integrated approach to tooling and inspection is a key differentiator in the chassis welding jig and body assembly process, where dimensional accuracy directly affects weld quality and structural integrity.

Welding Jigs for Repeatable, High-Quality Assembly

In automotive body assembly, weld quality is only as good as the fixture that holds the parts in place. Dian Stamping's welding jigs are custom-engineered to position components accurately, maintain consistent clamping force, and withstand the thermal and mechanical demands of production welding environments. These jigs cover applications from resistance spot welding and MIG welding to laser-assisted joining, supporting sub-assemblies such as door hinge reinforcements, seat frames, chassis brackets, and exhaust heat shields.

The company's welding jig design process incorporates CAD modeling, interference checking, and fixture simulation to eliminate trial-and-error on the shop floor. The result is faster program launch, reduced rework, and consistent weld quality across every production shift.

Sheet Metal Parts: From Prototype to High-Volume Production

Beyond tooling, Dian Stamping is a full-service sheet metal parts manufacturer. The company produces stamped components for both automotive and household appliance industries, including brackets, panels, hinges, handles, evaporator panels, and structural parts. Capabilities include progressive die stamping, fine blanking, deep drawing, laser cutting, bending, welding, and surface coating.

Customers can submit 2D drawings, 3D data, or physical samples for custom part development, and prototype services are available before committing to full production. With typical lead times of 30鈥?0 days for steel stamping dies and approximately 70 days for casting dies, Dian Stamping balances speed with the rigorous quality checks required by ISO 9001 and IATF 16949-oriented manufacturing standards.

Factory-Direct Value, Global Reach

Dian Stamping operates as a factory, not a trading company. This means customers benefit from direct pricing, shorter communication chains, and full visibility into the production process. With exports reaching more than 10 countries, the company has developed the logistics and documentation experience to serve international clients efficiently.

Free metal samples are available upon request (freight paid by the customer), allowing prospective partners to evaluate material quality and workmanship firsthand before placing production orders.