Zhang Yichun. PIERCING TEST OF THE Tz PLUG[J]. STEEL PIPE, 1989, 18(6): 17-18.
    Citation: Zhang Yichun. PIERCING TEST OF THE Tz PLUG[J]. STEEL PIPE, 1989, 18(6): 17-18.

    PIERCING TEST OF THE Tz PLUG

    • Plug nose-caving,sticking and cracking are improved through the use of the coated plug made of compound materials described in the paper but certain pressure of cooling water must be kept during piercing in order to make the plug service longer.
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