... ,304L,410,316,316L Size:16mm, 25mm, 38mm, 50mm, 76mm Metal Pall Ring Metal Pall Ring is made of materials like carbonsteel,stainless steel or Aluminum ... thermosensitive,decomposable,polymerizable or cokable systems,for these,Pingxiang Petrochemical metal tower packing is widely used in packing towers in petrochemical ...