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 6130-00-408-2573
NSN 6610-01-275-9771
NSN 5975-00-301-1537
NSN 5999-00-104-5582
NSN 6645-01-218-5234
NSN 5950-00-171-1888
NSN 6110-01-042-4117
NSN 6130-01-237-9836
NSN 4140-01-593-9905
NSN 5895-00-917-2920
NSN 6145-00-436-3425
NSN 2925-01-303-5266