Zhang Zhixin. NEW COMPOSITE PLUG USED FOR CROSS ROLL PIERCING[J]. STEEL PIPE, 1988, 17(4): 55-57.
Citation:
|
Zhang Zhixin. NEW COMPOSITE PLUG USED FOR CROSS ROLL PIERCING[J]. STEEL PIPE, 1988, 17(4): 55-57.
|
Zhang Zhixin. NEW COMPOSITE PLUG USED FOR CROSS ROLL PIERCING[J]. STEEL PIPE, 1988, 17(4): 55-57.
Citation:
|
Zhang Zhixin. NEW COMPOSITE PLUG USED FOR CROSS ROLL PIERCING[J]. STEEL PIPE, 1988, 17(4): 55-57.
|