seamless stainless steel tube 1)ASTM A213 ,ASTM A 312,ASTM A 269,ASTM A 789 2)TP321,304,304L,316,316L,310S,316TI.904L ... etc seamless stainless steel tubespecification :ASTM A213 ,ASTM A 312,ASTM ... A 269,ASTM A 789material:TP321,304,304L,316,316L,310S,316TI ...