... Ring Metal rasching ring is made of materi als like carbon steel, stainless steel or Aluminum alloy, etc. The product has ... shown. Other wall thicknesses are available on request.Material available:carbon steel, stainless steel including 304, 304L, 410,316, 316L, SS410 ... Raschig Ring for petrochemical industry (SS304,SS304L,SS316,SS316L,SS410,Carbon Steel, etc)