... stainless steel tube,welded tube, grade 201 202 304 square round ,spiral,golden tube We are a professional manufactory specialized in cold drawing stainless steel pipeonline ... TP312,AISI201 AISI304 SUS201 SUS304.Features:1) Material of stainless steel: grade: AISI 201, 202, 301,304, 304L, 316.etc.2 ...