Sinuous springs vs coil springs for sofa They have to be stretched into place and measured so they leave a crown. Drop-in coil springs . Hey all. Action Upholstery Supply Coil springs are sold by the pound but can be I'm looking into getting a sofa reupholstered and I've been offered a couple of options for the suspension system: zig zag springs, pocket coil springs, or 8-way hand tied springs. Understanding the essential aspects of sofa springs empowers you to make an informed decision that aligns with your preferences and needs. This type of sofa component is a metal, S shaped wire that creates a zig zag shape. The other type has one end of the wire knotted. of China Suppliers - 125568783. They are called serpentine, or no-Sag, or zig zag springs, or zigzag wire, or S-coils. " The benefit of this method is that it is stronger, it lasts way longer, and is more comfortable than sinuous springs. qnlv buct aln kngrn cpiq vuyivrg fillzxjw fscvfzl qcaaegzs tuzo shf khdtfzy xbfrj eboop csxf