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copper tube
 

   

Element group

 Impurity          elements

Mass fraction/%,Not greater than

Total mass fraction of elements/%,Not greater than

 

       1

     Se

    0.0002

   

   0.00030

 

    0.0003

     Te

    0.0002

     Bi

    0.0002


 

 

 

       2

     Cr

     ——

 

 

 

            0.0015

     Mn


     Sb

    0.0004

     Cd

     ——

     As

    0.0005

      P

     ——

       3

     Pb

    0.0005

            0.0005

       4

      S

    0.0015

            0.0015

 

 

 

       5

     Sn

     ——

 

 

            0.0020

     Ni


     Fe

    0.0010

     Si

     ——

     Zn

     ——

     Co

     ——

       6

     Ag

    0.0025

            0.0025


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