U Bend Tubing

Austenitic / Duplex Steel / Nickel Alloy / Cobalt Alloy

ASTM A213 / ASTM A269 Small Diameter TP304L Stainless Steel Heat Exchanger Tube For Fluid and Gas

HE-1-0038

Our heat exchanger tube with pickling and annealing surface is very popular in boilers and heat exchangers industry , water heater industry , air-conditioning industry etc . This kind of seamless tubes are have a very important position in our all products .

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ASTM A213 / ASTM A269 Small Diameter TP304L Stainless Steel Heat Exchanger Tube For Fluid and Gas

ASTM A213 / ASTM A269 Small Diameter TP304L Stainless Steel Heat Exchanger Tube For Fluid and Gas


Heat Exchanger Production Process :

 

1 . We use Cold Drawn techonology 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

 

Chemical Composition :

 

MaterialASTM A269 Chemical Composition % Max
CMnPSSiCrNiMoN BNbTi
TP3040.0820.0450.03118.0-20.08.0-11.0^^^.^
TP304L0.03520.0450.03118.0-20.08.0-12.0^^^^
TP3160.0820.0450.03116.0-18.010.0-14.02.00-3.00^^^
TP316L0.035 D20.0450.03116.0-18.010.0-15.02.00-3.00^^^
TP3210.0820.0450.03117.0-19.09.0-12.0^^^5C -0.70
TP3470.0820.0450.03117.0-19.09.0-12.0  10C -1.10^

 

 

ASTM A213 / A213 M  
Elements304L(wt%)316L (wt%)
(C) Carbon, max0.0350.035
(Mn) Manganese, max22
(P) Phosphorus, max0.0450.045
(S) Sulfur, max0.030.03
(Si) Silicon, max11
(Ni) Nickel8.0 - 12.010.0 - 14.0
(Cr) Chromium18.0 - 20.016.0 - 18.0
(Mo) MolybdenumN/A2.0 - 3.0
(Fe) IronBal.Bal.
(Cu) CopperN/AN/A
(N) NitrogenN/AN/A
 

Manufacturing Experience

Plant Area

Max Diameter of Welded Pipe

Annealing Furnace Length

What Grades Can We Provide?

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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HE-1-0038-ASTM A213 / ASTM A269 Small Diameter TP304L Stainless Steel Heat Exchanger Tube For Fluid and Gas

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