Donglong uses high quality mould materials and advanced processing technology to make the product performance more superior, thus improving the life of the mould and reducing the cost of customers. After 27 years of precipitation and accumulation, our customers are all over the world, and we have qood brand reputation and public praise at home and abroad.
Over the past 27 years, we have been focusing on the design, development and manufacturing of precision fastener molds,Donglong dedicated
to provide customers with one-stop convenient service
Over the past 27 years, we have been focusing on the design, development and manufacturing of precision fastener molds,Donglong dedicated
to provide customers with one-stop convenient service
Over the past 27 years, we have been focusing on the design, development and manufacturing of precision fastener molds,Donglong dedicated
to provide customers with one-stop convenient service
In order to quote you a good and accurate price, please tell me the details, including drawings, materials, quantity, finish and other requirements. After that, I will quote you an accurate price within 12 hours.
Donglong is the mainland general agent of Taiwan Yuqun and Yiding brands.
Donglong agent sales of Yuqun, Yiding, Qi Sheng and other brands of various series of screw head machine, cold heading forming machine, rolling machine.
Our factory has implemented ISO9001:2015 quality certification management system and professional enterprise resource planning mold system.
Over the past 27 years, we have been focusing on the design, development and manufacturing
Over the past 27 years, we have been focusing on the design, development and manufacturing of precision fastener molds,Donglong dedicated
to provide customers with one-stop convenient service
Over the past 27 years, we have been focusing on the design, development and manufacturing of precision fastener molds,Donglong dedicated
to provide customers with one-stop convenient service
Trimming dies are specialized tools used in manufacturing processes to remove excess material or flash from a workpiece, typically after a forming operation such as forging, casting, or stamping. These dies ensure the final product meets precise dimensional tolerances and surface finish requirements. They are commonly employed in metalworking industries to achieve high-precision components.
A cold heading die is a precision tool used in cold heading processes to form metal parts at room temperature without removing material. This manufacturing technique relies on high-pressure deformation to shape wire or rod stock into complex geometries with tight tolerances (typically ±0.005 inches or 0.127 mm). The dies are typically made from high-grade tool steels like M2 (1.3343), D2 (1.2379), or tungsten carbide grades with 90-94% WC content, offering hardness values between 60-65 HRC to withstand extreme pressures reaching 2,500 MPa (362,500 psi) during operation.
For 27 years, Donglong has been focusing on the design, development and manufacture of precision screw molds.
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