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 6620-01-261-2985
NSN 4140-00-901-8216
NSN 5960-01-425-1454
NSN 5999-01-505-8693
NSN 6685-01-557-1477
NSN 6130-01-371-9201
NSN 2925-01-532-8445
NSN 5925-00-170-4090
NSN 5935-01-631-5681
NSN 6610-00-614-1703
NSN 2925-00-714-3932
NSN 5975-01-288-3013