Pipes are produced with a ribbed structure which is combined with a variety of alternative options such as liquid and/or gas tightness, single or multistage profiling, diameter differences, cross-sectional shapes, wall thickness variations etc.
申请公布号
DE19755925(A1)
申请公布日期
1999.06.24
申请号
DE19971055925
申请日期
1997.12.17
申请人
ZICHNER, ROLAND, DIPL.-ING.(FH), 97508 GRETTSTADT, DE
