发明名称 |
Jacketing steel tubes and pipes |
摘要 |
A steel pipe is jacketed by concurrent extrusion of an ethylene hose concentric with a copolymer hose serving as an adhesive, the pipe passing through the extruder heat at an approximately 10% higher speed. The copolymer is predried, and the pipe is preferably precoated with heat-curable phenol or epoxy.
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申请公布号 |
US4451413(A) |
申请公布日期 |
1984.05.29 |
申请号 |
US19810328134 |
申请日期 |
1981.12.07 |
申请人 |
MANNESMANN AG |
发明人 |
STUCKE, WALTER;GLISSMANN, KARL-HEINZ |
分类号 |
B29B13/06;B29C47/02;(IPC1-7):B29H5/26 |
主分类号 |
B29B13/06 |
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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