发明名称 |
USO DE CONDUTO METÁLICO, PROCESSO E DUTO SUBTERRÂNEO. |
摘要 |
A pipeline laid trenchlessly and/or without a sand bed is produced using a metallic conduit which is encased with an extruded layer of a polyamide moulding material. In this way, the durability of the outer shell required for trenchless laying techniques without a sand bed is ensured. |
申请公布号 |
BRPI0815887(A2) |
申请公布日期 |
2015.02.24 |
申请号 |
BR2008PI15887 |
申请日期 |
2008.08.27 |
申请人 |
EVONIK DEGUSSA GMBH;SALZGITTER MANNESMANN LINE PIPE GMBH |
发明人 |
ANDREAS DOWE;RAINER GOERING;MARTIN RISTHAUS;KLAUS GAHLMANN;REINHARD BUESSING;HANS-JUERGEN KOCKS;JOERN WINKELS |
分类号 |
F16L58/10;F16L1/028 |
主分类号 |
F16L58/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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