Metal coils/D-rings are one of the most common connecting and fixing components in hardware accessories. Formed from metal wire, they are used for rebound/reset, connection/hanging, cushioning, and locking. Depending on their shape and structure, they can be categorized into various types, including split rings (key rings), double loop rings, spring ring clasps, single-loop coils (O-rings), square rings, and triangle rings.

They are primarily manufactured using wire forming and stamping techniques, with some products further welded to enhance structural strength. Precision manufacturing ensures a smooth closing and smooth opening and closing, making them suitable for design applications requiring high load-bearing capacity and aesthetically pleasing appearance.

Materials (select by application)

• Stainless Steel: Excellent corrosion resistance and stable elasticity
• Brass: Attractive appearance and easy forming; ideal for decorative link rings/light-duty springs.
• Zinc Alloy: Can be made into a wide variety of ring shapes and specifications according to customer requirements.

Finishes：

• Electroplating: black nickel, imitation gold, antique brass, black zinc…
• Coatings: E-coat (electrophoretic), spray paint, powder coat (matte/gloss/color).