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 5950-01-339-7139
NSN 6685-01-544-2025
NSN 5996-01-633-7979
NSN 5920-01-273-0710
NSN 7035-01-547-1985
NSN 6685-00-267-0938
NSN 5915-01-007-4031
NSN 6130-00-918-4755
NSN 5895-01-239-2377
NSN 6650-01-317-2101
NSN 5960-00-802-2965
NSN 6620-01-426-2220