公开(公告)号：WO1993012369A1

公开(公告)日：1993-06-24

申请号：PCT/US1992010737

申请日：1992-12-11

Applicant: ITT INDUSTRIES, INC.

Inventor： ITT INDUSTRIES, INC. ,  IORIO, Ralph, A. ,  GIBBS, Glen, A.

IPC: F16L58/10

CPC classification number: F16L58/1009 ,  B29C63/486 ,  B32B37/153 ,  F16L9/147 ,  F16L58/1045 ,  F16L58/109

Abstract: A composite small-diameter tubing (18) resistant to interaction with materials conveyed therethrough such as liquids containing alcohols or corrosive agents which includes a cylindrical outer metal conduit (12) having a hollow central shaft extending longitudinally therethrough defined by an interior wall; and a continuous non-reactive interior tube (18) surrounded by and positioned within the cylindrical metal conduit. The tubing (18) can be manufactured by a process which includes the steps of a) positioning a length of non-reactive tubing (18) having a predetermined outer diameter within an inner diameter of metal tubing (12) of essentially corresponding length, the metal tube (12) having an unsealed side seam, wherein the inner diameter is greater than the outer diameter of the non-reactive tubing; and b) sealing and reducing the metal tubing (12) to an outer diameter essentially equal to the predetermined outer diameter of the interior tubing (18). The non-reactive interior tube (18) may be made of a suitable polymeric material.

Abstract translation: 一种复合的小直径管道（18），其耐受与其中输送的材料的相互作用，例如含有醇或腐蚀剂的液体，其包括圆柱形外部金属导管（12），所述圆柱形外部金属导管（12）具有纵向延伸通过内壁限定的中空轴; 以及由圆柱形金属导管围绕并定位在圆柱形金属导管内的连续的非反应性内管（18）。 管道（18）可以通过包括以下步骤的方法来制造：a）将具有预定外径的一定长度的非反应性管道（18）定位在基本相应长度的金属管道（12）的内径内， 金属管（12）具有未密封的侧缝，其中所述内径大于所述非反应性管的外径; 以及b）将所述金属管（12）密封并且还原成基本上等于所述内管（18）的预定外径的外径。 非反应性内管（18）可以由合适的聚合材料制成。