Pirelli webbing vs sinuous springs cost . An example of jute webbing. Sinuous spring systems consist of heavy-gauge steel wires formed in continuous, vertical S-shaped coils. Feb 27, 2019 ยท It’s true that sinuous-spring sofas are less expensive than eight-way hand-tied, and if properly made they will perform better than a drop-in spring system or fake eight-way hand-tied suspension. I have seen articles that this type of webbing is better than 8 way hand tied (stronger, won't rust), but other articles say that 8 way hand-tied is the best then continuous sinouous and thrid is Pirelli webbing. They are often used in lower-cost upholstered furniture and offer good support but may sag over time. The deep, plush cushions invite you to relax, and the sinuous spring seating ensures ongoing comfort. High quality Pirelli webbing , drop-in coil spring foundations and 8-way hand-tied foundations should all last 20+ years. HOW IS IT MADE? PRODUCTION LINE VS. Next in line is a drop in coil spring unit, then sinuous springs (S-shaped springs stretched across the inside of the wood frame). qtrmnlfdmsxdvmslfyndrfzjdyeonyxcifvdmsouzjwmrzsgtavnjkysfdgsohxeslbykmafvolob