... 9mm-200mm 3.length:3m or as your requirements high quality stainless steel pipes StandardASTM,AISI,GB,BS,JIS,EN,DISOuter ... test,extended test,water pressure test,crystal rot test,heat treatment,NDTFeatureRepresentative type of Ferrite stainless steel, with magnetic good ... We have more than 3 years of experiences in producing high quality stainless steel products, such as: 201, 301, 304, 321, 316 ...