Heat resisitant radiant tube for continuous annealing line
The radiant tubes are made from NiCr alloy tubes, by centrifugal casting/spun casting tube with investment casting elbow, machining the inside holes,hydraulic pressure testing, welding and a series of NDT testling, like PT, RT. To increase the service life of radiant tubes, we select only the 100% new raw material to guarantee the physical properties of the tubes. We can supply complete ready-to-install assemblies according to customer specification. We also provided as cast tubes, welded tubes, welding of flanges and casings with fiber blankets, bottom distance spacers, etc.,
Materials:
two first legs and two first elbows:
ZGCr25Ni35Nb, ZGCr28Ni48W5, HK40, HT, HU, HH, 22H, More1, More2, KHR35H
two last legs and last elbow:
HPNb, ZG40Cr25Ni20Si2
support: GX40Cr25Ni20
flanges: SGC25
Process:
Legs is centrifugal casted and machined subsequently.
Elbows will be made by static casting or precision casting.
Support be made by precision casting.
Flange will be forged, welded and machined according to relevant drawings.
Welding consumables:
Similar to or higher than base material or as per the buyer's requirements .
Working temperature:
Depending on the materials (max 1250°C)
Application:
1. heat resistant alloy radiant tubes are mainly used in petrochemical, metallurgary, steel and heat resistant industries.
2. corrosion resistant alloy radiant tubes are used in pulp and paper, chemical and other petrochemical industries.
3. super-alloys radiant tubes are used in high strength, carburization resistance industry.
Inspection:
1.Chemical analysis by Spectrometer
2.Mechanical tests in Normal and High temperature.
3.Ultrasonic, X-ray, Dye Penetrant Test.
4.Boroscope; Eddy current testing; Microscope ; Pressure tests.
