发明授权
- 专利标题： External pipe coatings for a reinforced pipe
- 专利标题（中）： 钢管外管管
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申请号： US443746申请日： 1974-02-19
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公开(公告)号： US3939874A公开(公告)日： 1976-02-24
- 发明人: David Gray
- 申请人： David Gray
- 申请人地址： EN London
- 专利权人： British Gas Corporation
- 当前专利权人： British Gas Corporation
- 当前专利权人地址： EN London
- 优先权： UK09486/73 19730227
- 主分类号： F16L58/12
- IPC分类号： F16L58/12 ; F16L58/16 ; F16L9/04 ; F16L9/16
摘要：
Metal pipes are protected from corrosion by externally coating the pipe with a layer of coal tar and wrapping the pipe with at least one extensible material which is porous to allow the coal tar to pass through to form a layer on the outside. This type of wrap avoids any cracking of the protective materials during the commissioning and operation of the pipe.
公开/授权文献
- US5530068A Solid elastometric block copolymers 公开/授权日：1996-06-25
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