| 摘要 |
<p>A pre-assembly for use in providing a conduit system with an enhanced surface treatment, the conduit system being formed from a stainless steel conduit (13) and a fitting (10) formed from multiple components at least one of which is made from stainless steel, the pre-assembly (12,32,26,16) comprising the stainless steel conduit and at least at one stainless steel component of the fitting physically combined with one another, the pre-assembly having been case hardened by low temperature carburization while the stainless steel conduit and the at least one stainless steel component are pre-assembled with one another.
</p> |
