When it comes to high-volume metal stamping for the automotive industry, consistency and precision are non-negotiable. Every component — from a door hinge reinforcement plate to a body-in-white structural panel — must meet exacting dimensional tolerances while withstanding the rigors of mass production. That is why automotive OEMs and Tier-1 suppliers around the world turn to dedicated automotive stamping dies specialists who understand the full journey from tooling design to finished part. LINHAI DIAN MOULD CO., LTD (DIAN STAMPING) is one such partner, offering a rare combination of in-house die engineering, precision stamping, welding, and inspection under one roof.

Two Decades of Stamping Excellence

Founded in 2003 in Huangyan, Taizhou, Zhejiang Province, DIAN STAMPING has grown from a specialized tooling workshop into a full-service manufacturing facility spanning approximately 50,000 square meters. With a dedicated die workshop of 4,000 square meters and a team of roughly 110 employees — including 35 die designers and technicians — the company has built a reputation for reliability that spans more than two decades.

The company's annual capacity of approximately 2,000 sets of medium and small stamping dies, combined with an annual die turnover of around RMB 50 million, reflects a mature operation that has earned the trust of nameplate OEMs including KIA, BYD, Toyota, Honda, Suzuki, and Geely. Today, DIAN STAMPING exports its tooling and stamped parts to more than 10 countries worldwide.

A One-Stop Partner for Automotive Stamping

What sets DIAN STAMPING apart from many stamping die manufacturers is the breadth of its in-house capabilities. Rather than outsourcing secondary operations, DIAN STAMPING controls the entire value chain from tool design to finished assembly, enabling faster turnaround, tighter quality control, and lower overall cost for customers.

The company's core services span four key areas:

• Stamping Dies — Precision progressive, transfer, and tandem dies for complex automotive and industrial parts. The company processes multiphase steel, aluminum, custom rolled and welded plate, and stainless steel, covering applications from body-in-white and door systems to seating, instrument panels, and chassis systems.
• Sheet Metal Parts — High-volume stamped and fabricated metal parts for automotive and household appliance industries, including brackets, panels, hinges, structural components, and welded assemblies.
• Checking Fixtures — GD&T-oriented inspection fixtures designed to verify dimensional accuracy of stamped components and welded assemblies, helping eliminate measurement variability in production.
• Welding Jigs — Custom positioning and fixturing solutions for repeatable, accurate welding and assembly operations, tailored to specific part geometries.

Precision Progressive Die Stamping at Scale

For high-volume automotive production, progressive die stamping is the method of choice. DIAN STAMPING designs and builds multi-station progressive dies that perform multiple operations — blanking, forming, piercing, and bending — in a single press stroke. This approach dramatically reduces cycle time and labor cost while maintaining consistent part-to-part quality across thousands of production runs.

The company's die engineering team uses CAD/CAM tools including AutoCAD, SolidWorks, and CATIA to design dies that achieve tight tolerances and long tool life. Whether the application calls for high-strength steel body panels, aluminum structural components, or stainless steel exhaust shields, DIAN STAMPING's tooling solutions are engineered for durability and production efficiency.

Quality Systems You Can Rely On

Quality assurance is embedded throughout DIAN STAMPING's manufacturing process. The company operates under an ISO 9001-certified quality management system and follows IATF 16949-oriented automotive manufacturing practices. In-line inspections, 3D coordinate measuring machines (CMM), and strain analysis are used to verify dimensional accuracy and material integrity at every stage.

Additionally, DIAN STAMPING offers prototype services and free metal samples (with freight paid by the customer), allowing OEMs to validate tooling and part quality before committing to full-scale production. Typical delivery cycles are 30–40 days for steel stamping dies and approximately 70 days for casting dies, depending on project complexity.

The Future: Expanded Capacity and New Capabilities

DIAN STAMPING is investing in its future with a planned 35,000-square-meter facility featuring new press lines and coating capabilities. This expansion will significantly increase the company's stamping capacity, allowing it to serve larger-scale automotive programs and take on more complex, large-panel stamping projects.

For automotive OEMs and Tier suppliers seeking a reliable, cost-competitive partner for automotive stamping dies, stamped parts, checking fixtures, and welding jigs, DIAN STAMPING offers the combination of experience, scale, and integrated services that today's global supply chain demands.