In the competitive world of automotive manufacturing, the quality of your tooling determines the quality of your end product. From body-in-white panels to chassis components, every stamped part begins with a precision-engineered die. Yet finding a partner that combines deep die-making expertise, large-scale production capacity, and rigorous quality control under one roof has become increasingly challenging. That is precisely where DIAN STAMPING — a China-based manufacturer with over two decades of experience — stands apart.
A Legacy of Precision in Automotive Stamping
Founded in 2003 and headquartered in Huangyan, Taizhou, Zhejiang Province, LINHAI DIAN MOULD CO., LTD (commonly known as DIAN STAMPING) has grown from a modest die workshop into a 50,000 m² modern manufacturing facility. The company specializes in the full spectrum of automotive stamping dies, including progressive dies, transfer dies, and tandem dies — all designed for the high-volume production of complex automotive parts.
With a dedicated die workshop of approximately 4,000 m² and a skilled team of around 110 employees — including 35 die designers and technicians — DIAN STAMPING achieves an annual output of approximately 2,000 sets of medium and small stamping dies. The company's annual die turnover of roughly RMB 50 million reflects both its scale and the trust it has earned from global automotive OEMs.
| Metric | Detail |
|---|---|
| Established | 2003 |
| Facility Size | ~50,000 m² (new 35,000 m² facility underway) |
| Die Workshop | ~4,000 m² |
| Employees | ~110 (35 die designers & technicians) |
| Annual Die Capacity | ~2,000 sets of medium & small stamping dies |
| Annual Die Turnover | ~RMB 50 million |
| Key Customers | KIA, BYD, Toyota, Honda, Suzuki, Geely |
| Quality Certification | ISO 9001; IATF 16949-oriented practices |
| Export Reach | 10+ countries worldwide |
The Power of Progressive Die Stamping
Among the various stamping technologies, progressive die stamping remains one of the most efficient methods for high-volume metal forming. In a progressive die operation, a strip of metal is fed through a series of stations — each performing a distinct operation such as blanking, piercing, forming, or drawing — until a finished part emerges at the final station. This approach eliminates the need for multiple press setups and significantly reduces handling, labor, and cycle time.
DIAN STAMPING has invested heavily in progressive die design and manufacturing. The company's engineering team leverages modern CAD/CAE systems to simulate metal flow, stress distribution, and springback behavior before a single tool is cut. This digital-first approach ensures that dies are optimized for both formability and durability, reducing tryout time and minimizing costly revisions on the press floor.
The company's die-making capabilities extend to transfer dies and tandem dies as well, enabling the production of large and medium-sized complex parts for body-in-white, door systems, seating systems, instrument panels, fuel-tank systems, exhaust systems, clutch systems, and chassis systems. Whether it is high-strength steel, aluminum, stainless steel, or custom-rolled plate, DIAN STAMPING has the tooling expertise to handle it.
Custom Sheet Metal Parts: From Prototype to High-Volume Production
Beyond die manufacturing, DIAN STAMPING provides end-to-end sheet metal fabrication services for custom sheet metal parts. The company's sheet metal capabilities include laser cutting, bending, forming, stamping, welding, and surface coating — all performed in-house to ensure consistent quality and shorter lead times.
Customers can supply 2D drawings, 3D data, or physical samples, and DIAN STAMPING's engineering team will develop the complete tooling and production plan. Prototype services are available for new product development, and the company's factory-direct pricing model eliminates the margins typical of trading companies — a direct advantage for OEMs and Tier suppliers looking to optimize their supply chain costs.
The company's material capabilities span multiphase steel, aluminum alloys, cold-rolled steel, galvanized steel, and stainless steel. Typical delivery for steel stamping dies is 30–40 days, while casting stamping dies require approximately 70 days, depending on project complexity. Free metal samples may be offered upon request, with freight covered by the customer.
Quality Assurance: Checking Fixtures and Welding Jigs
A stamping die is only as good as the quality system that validates it. DIAN STAMPING manufactures high-precision checking fixtures that enable fast, repeatable inspection of stamped components against GD&T specifications. These fixtures allow operators to verify a large number of parts quickly — simply by placing them into the fixture — eliminating the individual measurement variations that can arise with manual tools like calipers or micrometers.
In addition, the company designs and builds custom welding jigs and fixtures for accurate, repeatable welding and assembly operations. Whether for robotic welding cells or manual workstations, these jigs ensure consistent positioning, reduce distortion, and improve throughput. Together, checking fixtures and welding jigs complete the quality loop — from die tryout through production inspection to final assembly.
The company's quality management system is certified under ISO 9001, and its manufacturing practices follow IATF 16949-oriented automotive standards. With in-line inspections, 3D CMM measurement, and rigorous process control, DIAN STAMPING delivers components that meet the tight tolerances demanded by global automotive OEMs.
Why Vertical Integration Matters
One of the most significant advantages DIAN STAMPING offers is its vertically integrated production model. Unlike many competitors who outsource die design, tryout, or secondary operations, DIAN STAMPING controls the entire workflow:
- Die Design & Engineering — In-house CAD/CAE team with 35+ specialists
- Tool & Die Manufacturing — Progressive, transfer, and tandem dies under one roof
- Stamping Production — High-volume press lines for sheet metal parts
- Welding & Assembly — Custom welding jigs and assembly fixtures
- Quality Inspection — In-house checking fixtures and CMM inspection
- Surface Treatment — Coating and finishing capabilities
This integration eliminates handoff delays, reduces communication gaps, and enables faster problem resolution. When a die issue arises on the press floor, the same team that designed it can diagnose and correct it immediately. The result is shorter lead times, lower total cost, and higher first-pass yield.
A Trusted Partner for Global Automotive OEMs
Over the past two decades, DIAN STAMPING has built long-term supply relationships with some of the world's leading automotive brands. Its customer roster includes KIA, BYD, Toyota, Honda, Suzuki, and Geely — a testament to the company's consistent quality, on-time delivery, and competitive pricing. The company exports to more than 10 countries, serving both OEMs and Tier suppliers across Asia, Europe, and the Americas.
With a new 35,000 m² facility in development — featuring new press lines and advanced coating capabilities — DIAN STAMPING is investing in the future of automotive stamping. This expansion will further increase production capacity, enable larger part sizes, and enhance surface treatment quality, positioning the company to meet the growing demands of electric vehicle platforms and lightweight body structures.
Whether you need precision stamping dies for a new vehicle program, high-volume custom sheet metal parts, or inspection fixtures and welding jigs for your production line, DIAN STAMPING delivers the engineering depth, manufacturing scale, and quality assurance you need. As a factory-direct manufacturer with ISO 9001 certification and IATF 16949-oriented practices, the company offers competitive pricing without compromising quality.
Contact DIAN STAMPING today to discuss your project requirements. Email rita@xuhuimould.com or visit www.dastamping.com to request a quote or arrange a factory visit.