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Cold heading dies factory tour by video

The video tour is convenient for overseas customers.

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Introduction to the Process Flows in Screw and Nut Manufacturing

Wire Drawing Process: This process involves drawing and reducing the diameter of raw material products to the desired wire diameter. It is suitable for wire used in large screws, nuts, and threaded rods.

Cold Forging Process: The head of bolts is formed through cold heading equipment, resulting in a continuous metal fiber cross-section that enhances product strength and mechanical performance. Hex bolts are formed using four-die four-blow, three-die three-blow, or three-die three-blow methods. Screws are formed using a one-die two-blow method.

Thread Rolling Process: This process involves rolling or tapping to create the required threads on the already formed semi-finished products. Cold processing is typically used for bolt threads, where the thread blanks within a certain diameter range are shaped by the pressure applied by thread rolling plates or dies.

More info about fastener:

This blog will share fastener industry information, fastener mold knowledge, Donglong company culture, and Donglong factory news.

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How about we import second hand nail making machines from overseas?

Like the used thread rolling machines from China.

Is it convenient for repair and maintenance?

Wholesale used thread rolling machines at low price - Donglong Cold Heading Die, Screw Mold, nut mold and bolt mold factory

Product Name:Used Thread Rolling Machine Model Number: Specification:Contact us for catalogue for this info Customization:Logo and Packag