| 摘要 |
The assembly comprises at least one insert 2,2' that can be fixedly disposed within a tube or tubes 1,1', the insert having at least one enlarged portion 2,2' with an annular groove 21,21', and a portion 22,22' which, when inserted in a tube 1,1', provides an annular space therebetween. Upon insertion of the insert 2,2' within the tube(s), the tubes(s) is/are machined to form (an) annular recess(es) 11,11' corresponding to the annular groove(s) 21,21' such that the insert is fixedly disposed within the tube(s). Tubes can be attached in line, in T-formation, in L-formation, in X-formation, or in three-dimensional L-formation. The tubes have lateral holes 12,12' in their walls at their ends, if fixed in the afore-mentioned formations, so that a curable liquid is poured around the joint and enters the spaces between the insert(s) 2,2' and the tubes 1,1' via the holes 12,12' to form an enclosing element 3. For side-by-side fixed tubes 1,1' at least one tube 1' has holes at its middle portion with insert 2' so located, for the enclosing element 3 to be formed at that location. |
