Factory Wholesale 3.0-4.0mm Stainless Steel Zigzag Spring For Sofa Seat Cushion

                                                Product Descriptions

Understanding the Product: 3.0-4.0mm Stainless Steel Zigzag Spring

• Zigzag Spring (aka No-Sag Spring, Sinusoidal Spring): A continuous, pre-bent wire spring that forms

• a series of "M" or "Z" shapes. It's used in sofa frames for providing foundational support, often tied down

• with helical springs for a more responsive feel.

• 3.0-4.0mm Wire Diameter: This is an extremely heavy-duty specification.

  • Standard residential sofas typically use 1.8mm - 2.5mm wire.

  • 3.0mm+ is reserved for commercial, heavy-use, or high-end luxury applications (e.g., contract furniture

  •  for hotels, airports, waiting rooms, or premium home furniture designed for maximum longevity and

  • weight capacity).