U Bend Tubing
Austenitic / Duplex Steel / Nickel Alloy / Cobalt Alloy
Heat Exchanger Tube 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 positions or as customers 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
TP304L 25.4*2.11mm U Bend Stainless Steel Heat Exchanger Tube
Heat Exchanger Tube Chemical Composition——Basic Raw Materials:
ASTM/UNS | C (max) | Si (max) | Mn (max) | P (max) | S (max) | Cr | Ni | Mo | Ti |
TP304/S30400 | 0.080 | 1.00 | 2.00 | 0.045 | 0.03 | 18.0-20.0 | 8.0-10.5 |
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TP304L/S30403 | 0.035 | 1.00 | 2.00 | 0.045 | 0.03 | 18.0-20.0 | 8.0-13.0 |
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TP304H/S30409 | 0.04-0.10 | 1.00 | 2.00 | 0.045 | 0.03 | 18.0-20.0 | 8.0-11.0 |
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TP316/S31600 | 0.080 | 1.00 | 2.00 | 0.045 | 0.03 | 16.0-18.0 | 11.0-14.0 | 2.0-3.0 |
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TP316L/S31603 | 0.035 | 1.00 | 2.00 | 0.045 | 0.03 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 |
|
TP316Ti/S31635 | 0.080 | 1.00 | 2.00 | 0.045 | 0.03 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 | 0.7>5x(C+N) |
TP321/S32100 | 0.080 | 1.00 | 2.00 | 0.045 | 0.03 | 17.0-19.0 | 9.0-12.0 |
| 0.7>5x(C+N) |
TP317L/S31703 | 0.035 | 1.00 | 2.00 | 0.045 | 0.03 | 18.0-20.0 | 11.0-15.0 | 3.0-4.0 |
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TP347H/S34709 | 0.04-0.10 | 1.00 | 2.00 | 0.045 | 0.03 | 17.0-19.0 | 9.0-13.0 |
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TP309S/S30908 | 0.080 | 1.00 | 2.00 | 0.045 | 0.03 | 22.0-24.0 | 12.0-15.0 | 0.75 |
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TP310S/S31008 | 0.080 | 1.00 | 2.00 | 0.045 | 0.03 | 24.0-26.0 | 19.0-22.0 | 0.75 |
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Heat Exchanger Tube Application:
a) Petroleum, Chemical enterprise, superheater 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
Manufacturing Experience
Plant Area
Max Diameter of Welded Pipe
Annealing Furnace Length
Nickel Alloy
NI-MO: N10001,N10665,N10675...
NI-CR-MO: N10276,N06022,N06035,N06455,N06002...
NI-CR-MO-CU: N06030,N06200,N08031,N08825,N08020...
NICR-MO-W: N06230...
NICKEL: N02200,N02201...
NI-CU: N04400,N05500...
NI-CR-FE: N06600,N06601,N06690,N08800,N08810,N08811...
NI-CR-MO-NB: N06625,N07718...
Austenitic
304/L/H/N, 316/L/H/N/Ti, 321/H, 309/H, 310S, 347/H, 317/L, 904L...
Duplex Steel
31803, 32205, 32750, 32760...
Cobalt Alloy
Alloy 188/ UNS R30188, Alloy L-605/ UNS R30605, Alloy S-816, Alloy 6B, UMCo50, FSX-414, MP-159...
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