JIN Ru-song. The petroleum crisis and reviving of the plug pipe mill process(A1)—— (Note 2-1, continuned)[J]. STEEL PIPE, 2001, 30(5): 55-58.
    Citation: JIN Ru-song. The petroleum crisis and reviving of the plug pipe mill process(A1)—— (Note 2-1, continuned)[J]. STEEL PIPE, 2001, 30(5): 55-58.

    The petroleum crisis and reviving of the plug pipe mill process(A1)—— (Note 2-1, continuned)

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