... stainless steel pipes and tubes ASTM A213 ,ASTM A 312,ASTM A 269,ASTM A 789 material:TP321,304,304L,316,316L,310S,316TI.904L stainless steel pipes and tubesspecification :ASTM ... A213 ,ASTM A 312,ASTM A 269,ASTM A 789material:TP321,304,304L ... tube.For more information please feel free to browsing our website: www.hongbao.com