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 4140-00-981-8580
NSN 5998-01-440-9490
NSN 5960-01-536-9763
NSN 7035-01-198-1512
NSN 5925-01-459-4829
NSN 6145-01-476-8657
NSN 6135-01-396-0704
NSN 5990-00-851-4363
NSN 5965-01-289-2107
NSN 2925-00-167-6762
NSN 6610-01-132-1898
NSN 5855-01-426-5589