... on. Good Quality and Price The materials of our stainless steel pipes are SS200series,SS304,SS304L,SS316,SS316L,SS321,SS310S ... 30 mm.Detailed Product Description...Good Quality and Low Price Stainless Steel Pipe 1)Grade: 304, 304L, 316, 316L, ... customers' needs are available.11) application oil,medical treatment,chemical industry,food industry,light industry,machinery stainless steel welded pipe tube