Zhang Hongren. QUESTIONS AND ANSWERS ABOUT THE PRODUCTION OF HF LONGITUDINAL-WELD PIPES[J]. STEEL PIPE, 1988, 17(2): 74-77.
    Citation: Zhang Hongren. QUESTIONS AND ANSWERS ABOUT THE PRODUCTION OF HF LONGITUDINAL-WELD PIPES[J]. STEEL PIPE, 1988, 17(2): 74-77.

    QUESTIONS AND ANSWERS ABOUT THE PRODUCTION OF HF LONGITUDINAL-WELD PIPES

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