Nickel Alloy 825/ N08825 Heat Exchanger Tube For Chemical Equipment With BA/AP Surface
Grade: Alloy 825; Alloy 600; Alloy 601; Alloy 800; TP304 ; TP304H ; TP304L ; TP316 ; TP316L; S31803
Standard: ASTM B622; ASTM B516; ASTM B444; ASTM B829, etc
Size :Routine OD : 19.05mm,25.4mm,31.8mm,38.1mm
WT : 1.2-2.77mm
Length : According to customer needs up to 20m
Heat Exchange Tube Application :
a) Petroleum , chemical enterprise , super heater of boiler and heat exchanger
b) High temperature-resistant transmission fluid pipe in power station
c) Ship with pressure pipe
d) Exhaust purification device
e) Construction and ornament
f) solar industry , military , semiconductor etc
Heat Exchange Tube Production Process :
1 . We use Cold Drawn technology to produce U bend tube
2 . U bend tubes produce will accordance to customer's drawings
3 . To avoid oxidation , inert gas (Argon) is passed through tubes ID at the required flow rate
4 . The radius is checked for its OD and wall thinning with the recommended specification
5 . We'll choose three different position or as customer's require to make sure tubes quality . We'll do physical properties and micro-structure test
6 . Visual inspection for waviness and cracks is done with Dye Penetrant Test
7 . Each tube is then hydro tested at the recommended pressure to check for leakage

Nickel Alloy 825 Heat Exchange Tube Chemical composition:
% |
Ni |
Fe |
Cr |
C |
Mn |
Si |
S |
Mo |
Cu |
Ti |
Al |
min |
38 |
22 |
19.5 |
2.5 |
1.5 |
0.6 |
|||||
max |
46 |
23.5 |
0.05 |
1 |
0.5 |
0.03 |
3.5 |
3 |
1.2 |
0.2 |