In the fast-paced world of automotive manufacturing, every component counts. From body-in-white structures to seating systems and chassis assemblies, the quality of stamped metal parts directly impacts vehicle safety, performance, and production efficiency. Yet finding a single supplier who can handle stamping dies, sheet metal fabrication, inspection fixtures, and welding jigs under one roof remains a challenge for many OEMs and Tier 1 suppliers worldwide.

Enter LINHAI DIAN MOULD CO., LTD (DIAN STAMPING) — a China-based manufacturer with over 20 years of hands-on experience in the automotive tooling industry. Established in 2003 and headquartered in Huangyan, Taizhou, Zhejiang Province, DIAN STAMPING has grown into a comprehensive one-stop partner for automotive stamping dies, stamped sheet metal parts, checking fixtures, and welding jigs.

A Manufacturing Facility Built for Scale and Precision

DIAN STAMPING operates a modern facility spanning approximately 50,000 m², with a dedicated die workshop of around 4,000 m². The company is currently expanding into a new 35,000 m² facility featuring advanced press lines and coating capabilities. With around 110 employees — including approximately 35 die designers and technicians — the company achieves an annual capacity of about 2,000 sets of medium and small stamping dies, supported by an annual die turnover of approximately RMB 50 million.

This scale places DIAN STAMPING in a strong position to handle multiple die projects simultaneously while maintaining consistent quality — a capability that is increasingly critical as automotive OEMs compress program timelines and demand faster tooling delivery.

Comprehensive Stamping Die Capabilities

At the core of DIAN STAMPING's offering is its expertise in progressive die stamping, transfer dies, and tandem/multi-station dies. The company's tooling portfolio covers the full spectrum of automotive applications:

• Body-in-White: A-pillar inner panels, side frames, rear outer panels, spare tire wells, and structural reinforcements
• Door Systems: Hinge reinforcement plates, water-cut reinforcement panels, and door inner/outer panels
• Seating Systems: B-pillars, seat basins, support beams, and battery cases
• Chassis & Exhaust Systems: Control arms, swing arms, heat shields, and floor cross members
• Instrument Panel & Fuel Tank Systems: Dashboard supports, flow channels, and structural brackets

DIAN STAMPING works with a wide range of materials, including multiphase steel, aluminum alloys, custom rolled and welded plate, and stainless steel — ensuring that the right material is matched to each application's strength, weight, and cost requirements.

Precision Sheet Metal Parts for Automotive and Appliance Industries

Beyond dies, DIAN STAMPING is a reliable supplier of sheet metal parts for both automotive and household appliance applications. The company's sheet metal fabrication capabilities include progressive and transfer stamping, deep drawing and forming, laser cutting, bending, welding, and powder coating.

For automotive customers, DIAN STAMPING produces chassis seats, control arm assemblies, structural brackets, and body panels from materials such as SPC440 and JAC270CN. For the appliance sector, the company manufactures brackets, hinges, handles, evaporator panels, and heat sinks for refrigerators, washing machines, and ovens — meeting both ISO 9001 and RoHS compliance standards.

Quality Assurance with Checking Fixtures and Welding Jigs

DIAN STAMPING provides high-precision checking fixture solutions that verify whether manufactured workpieces meet the specified dimensions. Designed around GD&T principles, these fixtures enable rapid, repeatable inspection of large part volumes, eliminating the individual measurement variation that comes with manual tools like vernier calipers and micrometers. As the company emphasizes, press dies and checking fixtures are always needed as a set — and DIAN STAMPING delivers both.

Complementing the inspection capability, the company's welding jigs and fixtures provide accurate positioning and repeatable alignment for automotive welding and assembly operations. These custom fixtures support a range of welding processes including spot welding, arc welding, and robotic welding, ensuring that sub-assemblies and completed parts meet OEM fit-and-finish standards.

Quality Management and Delivery Performance

DIAN STAMPING operates under an ISO 9001-certified quality management system, with manufacturing practices aligned to IATF 16949-oriented automotive standards. Quality control is backed by rigorous in-process inspections, CMM (coordinate measuring machine) verification, and SPC (statistical process control) monitoring.

Delivery timelines are structured to meet the urgency of automotive production schedules:

• Steel stamping dies: Typically 30–40 days from design approval
• Casting stamping dies: Approximately 70 days, depending on complexity
• Prototype services: Available for rapid design validation

Global Customer Base and OEM Partnerships

DIAN STAMPING's customer portfolio includes automotive OEMs such as KIA, BYD, Toyota, Honda, Suzuki, and Geely, with exports reaching more than 10 countries. The company positions itself as a factory-direct manufacturer — not a trading company — enabling competitive pricing, direct communication, and full control over the production process from raw material to finished tooling.

Customization is available from 2D drawings, 3D CAD data, or physical samples. Free metal samples are offered upon request (with freight paid by the customer), allowing potential partners to evaluate quality firsthand before committing to production.