CPC F16L 13/02 (2013.01) [F16L 9/02 (2013.01); H05G 2/006 (2013.01)] | 15 Claims |
1. Apparatus comprising:
a conduit portion made of a first refractory metal; and
a fitting portion attached to an axial end of the conduit portion, the fitting portion being made of a second refractory metal having greater yield strength than the first refractory metal.
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