Precision Automotive Stamping Dies and Sheet Metal Solutions: A Trusted Partner for Global OEMs
How LINHAI DIAN MOULD CO., LTD combines 20+ years of expertise with cost-competitive manufacturing
The automotive industry demands precision, consistency, and cost-efficiency at every stage of the supply chain. From body-in-white panels to seating system components, the quality of automotive stamping dies directly determines the dimensional accuracy and structural integrity of stamped parts. Choosing the right die manufacturer is therefore a critical decision for OEMs and Tier-1 suppliers alike.
Located in Huangyan, Taizhou, Zhejiang Province — one of China's established manufacturing hubs — LINHAI DIAN MOULD CO., LTD (operating as DIAN Stamping) has been serving the global automotive market since 2003. With a modern facility spanning approximately 50,000 m² and a dedicated die workshop of 4,000 m², the company has positioned itself as a reliable one-stop manufacturing partner for complex stamping tooling and production.
A Comprehensive Range of Stamping Capabilities
DIAN Stamping offers end-to-end solutions across four core product categories, covering the full lifecycle of automotive metal part production:
Stamping Dies
DIAN specializes in progressive, transfer, and tandem dies for complex automotive parts. The company's stamping die manufacturers team of approximately 35 die designers and technicians uses advanced CAD/CAM software (AutoCAD, SolidWorks, CATIA) to deliver precision tooling for body-in-white, door systems, instrument panels, seating systems, and chassis components. Annual capacity reaches approximately 2,000 sets of medium and small stamping dies.
Sheet Metal Parts
As a trusted sheet metal parts supplier, DIAN produces stamped components for both automotive and household appliance industries. The company processes a wide range of materials including multiphase steel, aluminum, custom rolled and welded plate, and stainless steel. Secondary operations such as laser cutting, bending, welding, and coating are available in-house.
Checking Fixtures
Every stamped part needs verification. DIAN manufactures high-precision checking fixture solutions designed to GD&T standards, enabling fast and repeatable dimensional inspection of complex stamped components and welded assemblies. Press dies and checking fixtures are supplied as a matched set, eliminating measurement variability.
Welding Jigs & Assembly
To support accurate and repeatable production assembly, DIAN also designs and builds custom welding jigs. These fixtures ensure consistent positioning during welding operations, reducing rework and improving throughput for automotive sub-assemblies and structural parts.
Quality Systems and Global Recognition
DIAN Stamping operates under an ISO 9001 quality management system and follows IATF 16949-oriented manufacturing practices, ensuring that every die and stamped part meets automotive industry standards. The company's quality assurance process includes in-line inspections, CMM (coordinate measuring machine) verification, and rigorous dimensional checks using checking fixtures.
The company's customer portfolio speaks to its reliability. DIAN has supplied tooling and stamped parts to OEMs including KIA, BYD, Toyota, Honda, Suzuki, and Geely, with exports reaching more than 10 countries worldwide. This global footprint demonstrates the company's ability to meet diverse engineering specifications and quality expectations.
Cost-Effective Manufacturing Without Compromise
One of DIAN's key differentiators is its factory-direct pricing model. As a manufacturer rather than a trading company, DIAN offers competitive pricing on both tooling and production volumes. Typical delivery timelines are 30-40 days for steel stamping dies and approximately 70 days for casting dies, subject to project complexity.
The company's expanding facility — a new 35,000 m² plant featuring additional press and coating lines — reflects its commitment to scaling capacity and adopting newer manufacturing technologies. This investment will further strengthen DIAN's ability to serve growing demand from both existing and new customers.
Customization and Engineering Support
DIAN offers full customization services based on 2D drawings, 3D data, or physical samples. Its engineering team provides die design, prototyping, tryout, and production support throughout the project lifecycle. This flexibility is especially valuable for OEMs and Tier suppliers developing new vehicle programs or seeking to optimize existing production lines.
Free metal samples are available upon request (freight paid by the customer), allowing potential partners to evaluate material quality and workmanship before committing to production orders.
Application Areas Served
DIAN's tooling and stamped parts are used across a wide range of automotive systems:
- Body-in-white — door panels, side frames, A/B-pillar reinforcements, floor panels
- Door systems — hinge reinforcement plates, guide rails, water-cut panels
- Seating systems — seat basins, support beams, swing arms, heat shields
- Instrument panel and dashboard support structures
- Fuel-tank, exhaust, clutch, and chassis system components
- Household appliance stampings — brackets, panels, hinges for refrigerators and washing machines
Why Choose DIAN Stamping?
- 20+ years of dedicated experience in automotive stamping die manufacturing
- 50,000 m² modern facility with 110 skilled employees and 35 die designers
- 2,000 sets/year stamping die capacity with proven delivery performance
- ISO 9001 certified with IATF 16949-oriented processes
- Factory-direct pricing — no trading company markups
- Global customer base including KIA, BYD, Toyota, Honda, Suzuki, and Geely
- One-stop service from die design and prototyping to mass production and inspection
Ready to Partner with a Reliable Stamping Die Manufacturer?
Whether you need precision stamping dies, production sheet metal parts, checking fixtures, or welding jigs, DIAN Stamping has the engineering expertise and manufacturing capacity to deliver. Contact the team today to discuss your project requirements and request a competitive quote.
Get a Quote →