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 6135-00-557-8874
NSN 6645-01-500-5611
NSN 5975-01-501-5244
NSN 6650-00-769-3003
NSN 5920-01-421-0291
NSN 5965-01-100-3878
NSN 6135-00-062-5080
NSN 5998-01-579-3405
NSN 5935-01-421-4371
NSN 2925-00-928-5931
NSN 5999-01-383-6821
NSN 6105-01-430-8946