Product Name	Pocket Spring Of Sofa Inner Spring Unit
Material	High Carbon Steel Wire
Wire Diameter	1.0mm-2.3mm
Head Diameter	4-6.5cm
Middle Diameter	4.5-7.5cm
Height	6-25cm
Turns	4-7Turns
Coils Counts	According to the demand of clients
MOQ	Negotiate
Woven Fabric	65-100g/㎡Or Can Be Customized
Size	Any Size Available
Color	White, Blue Or Customized
Packing	Compressed And Rolled
Application	For Sofa Factory/Manufacturer

High-Carbon Steel Wire: Sourcing quality raw material is critical. The wire is fed into an automated spring coiling

machine.

Heat Tempering: The coiled springs are heated in an oven to relieve internal stresses and set their shape.

This is essential for long-term durability and preventing sagging.

Pocketing: Springs are automatically fed into a machine that places them into sleeves of fabric and seals them

together with a robust glue (often hot melt adhesive) or ultrasonic welding.

Clipping and Assembly: The long strings of pocketed springs are clipped together with helical wires (usually

running along the top and bottom) to form a stable, unified unit or module.

Edge Reinforcement: Good units will have a border wire around the perimeter, which is then stapled or

clipped to the spring unit. This creates a firm edge that prevents roll-off and defines the sofa's shape.

Packaging: Units are compressed, rolled, or stacked and packaged for efficient shipping.

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