High quality Metal Raschig Ring Materials: SS304 316 316L 410... Size: 15mm~90mm SS304, SS304L,SS316,SS316L,carbon steel Metal rasching ring is made of materi als like carbon steel, stainless steel or Aluminum alloy, etc. The product has features such as thin wall, heat resistant, high free volume, high capacity, low resistance, high separation efficiency and so on. It is especially suitable for ...