Flexible Leitung zur Erdverlegung und Verfahren zur Herstellung
摘要
Gas pipe extenders to compensate for movements in ground-laid gas supply pipes caused by mining operations have been found to leak owing to their construction or have been inadequately extendible or capable of insufficient lateral movement. Greater axial extendibility and lateral movement are obtained with the aid of a metal bellows (1) and a corrosion-protection jacket (2) wound from strips and penetrating into the corrugation interstices (3) of the metal bellows. For use in supply pipes likely to be shifted by building operations and especially mining or earth tremors.
申请公布号
DE4423921(C1)
申请公布日期
1996.01.04
申请号
DE19944423921
申请日期
1994.07.07
申请人
CHR. BERGHOEFER GMBH & CO. KG, 34121 KASSEL, DE
发明人
BODEN, KURT, 34317 HABICHTSWALD, DE;BUERGER, STEFAN, 34225 BAUNATAL, DE