The field of application: they are installed in the radiant zones of high-temperature furnaces of reforming methanol and hydrogen production plants.
The technology of the production: they are produced from centrifugal cast tubes, shaped castings (Cones, staves, flanges) by welding in a protective atmosphere of argon.
The materials used are alloys of the type 18CR10NITI, Х25Н20, Х25Н35, Х35Н45 etc.
Outside diameter
from 125 to 175 mm
Inside diameter
from 98 to 160 mm (after boring)
Internal surface cleanliness
of Ra =2,5
Cast section length
3500-5000 mm
Operating temperature
from 600 to 950 ˚С
Weight of the reaction tube
from 400 to 800 kg
Number of tubes in the furnace
from 72 to 280 pipes
Weight of tubes in the furnace
from 28 000 to 200 000 kg
Working lifespan
about 10 years (100 000 hours)
