Jin Rusong. Development of piercing process and revival of cone- type piercing mill(A1)——< One Hundred Years of Seamless Steel Tube Industry> (Notes 6-1, continued)[J]. STEEL PIPE, 2003, 32(1): 56-59.
    Citation: Jin Rusong. Development of piercing process and revival of cone- type piercing mill(A1)——< One Hundred Years of Seamless Steel Tube Industry> (Notes 6-1, continued)[J]. STEEL PIPE, 2003, 32(1): 56-59.

    Development of piercing process and revival of cone- type piercing mill(A1)——< One Hundred Years of Seamless Steel Tube Industry> (Notes 6-1, continued)

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