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 5935-01-135-9910
NSN 5996-01-367-2081
NSN 5895-01-590-1689
NSN 5935-00-419-0121
NSN 6645-01-525-7493
NSN 6650-00-411-7132
NSN 5895-01-392-1203
NSN 5930-01-337-0302
NSN 5895-00-596-8678
NSN 7035-00-585-2113
NSN 6620-00-226-2285
NSN 4140-01-026-9293