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 6320-01-132-2746
NSN 5999-01-478-5619
NSN 6620-00-392-9835
NSN 5835-01-482-1591
NSN 6650-01-656-5649
NSN 6645-01-566-3205
NSN 6135-01-222-0703
NSN 5945-01-100-3403
NSN 5920-00-860-0456
NSN 5915-01-226-5880
NSN 6320-01-330-2138
NSN 5935-01-024-6962