Gjenget skj?t for innvendig belagte metallr?r
申请(专利)号： NO19960005509
专利号： NO965509D0 主分类号： 6F16LA
申请权利人： VALLOUREC OIL
& GAS 公开国代码： NO 优先权国家： FR
摘 要：
The invention relates to the threaded joints for tubes equipped with an inner coating, in particular intended to protect the tubes and the seals against corrosion or to improve the conditions of circulation of fluids. & lt; br / > this seal comprises two tubular components threaded (3, 4) each provided with an annular surface (16, 17). < br / > the inner wall (14, 15) of the components and the annular surfaces are coated with a layer (22, 23). The shape of the annular surfaces (16, 17) is such that the screwed these surfaces are partially into bearing contact on the outer portion (16,1, 17,1), their inner portion, thereby creating a zone of the progressive opening (24) at least partly filled (l) for the layers of the two components. & lt; br / & gt; this relates in particular, the exploitation of the deposits of petroleum and gas in the presence of corrosive fluids. 主权项：
申请日： 1996-12-20 公开公告日： 1996-12-20
分类号： 6F16LA
发明设计人： NOEL, THIERRY 申请国代码： NO
优先权： 19951222 FR
9515412
摘 要 附 图：
权 利 要 求 说 明 书
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说 明 书
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Gjenget skj
