<p>An elongated prestressing steel material for use in the fabrication of prestressed concrete comprises a steel member and an outer coat of many microcapsules each containing a flowable material in its interior.</p>
申请公布号
DE3673050(D1)
申请公布日期
1990.09.06
申请号
DE19863673050
申请日期
1986.04.08
申请人
SUMITOMO ELECTRIC INDUSTRIES, LTD., OSAKA, JP
发明人
MIZOE, MIKIO C/O ITAMI WORKS OF SUMITOMO;WATANABE, KANJI C/O ITAMI WORKS OF SUMITOMO, ITAMI-SHI HYOGO, JP
