A tubular item, usually pre-bent forming part of the heating surface area of a high pressure steam boiler.
Classification: Parts for steam or other vapor generating boilers and super-heated water boilers, except heat exchangers
NSN 5960-01-470-1579
NSN 5915-01-426-4304
NSN 5996-00-383-6173
NSN 6135-00-161-0746
NSN 6620-01-333-0406
NSN 5925-01-099-0693
NSN 5950-00-726-4739
NSN 6110-00-035-8794
NSN 6130-01-101-7511
NSN 6135-01-421-3189
NSN 5965-00-289-6280
NSN 2925-01-423-8141