Hello:
I'm looking for some clarification as to rating a LWN with SA-105 to -20F.
Per UCS-66(c)(4) it appears that if the nozzle (LWN) is produced per B16.5 and the meets the ID requirements then the nozzle is exempt from impact testing. However, in my case I have a 20" CL600 LWN (nozzle wall...