Thickness 3mm Welded U Fin Tube TP304LN For Feed Water Heater Round Shape

Brand Name:TOBO
Certification:SGS/BV/ABS/LR/TUV/DNV/BIS/API/PED
Model Number:A/SA668/213 TP304LN
Minimum Order Quantity:1 pcs
Delivery Time:15- 20 work days
Payment Terms:L/C, T/T, Western Union
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Location: Shanghai Shanghai China
Address: No.208,Lvdi Road,Baihe Town,Qingpu District,Shanghai,China
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Product Details

Thickness 3mm ASME A/SA668/213 Welded U-bent Tubes TP304LN For Feed Water Heater


U Bend Tube are manufactured in our plant as per the customer requirements. Solution annealing after bend will be process to lower the risidual stress, and followed by hydrostatic testing and dye penetrant testing if required.


Stainless Steel Tubes Size for Heat Exchanger

Stainless Steel Tubes Size for Heat Exchanger


Inch to mm Chart

InchesDecimalMillimeters
1/16″.06251.59 mm
1/8″.12503.18 mm
3/16″.18754.76 mm
1/4″.25006.35 mm
5/16″.31257.94 mm
3/8″.37509.53 mm
7/16″.437511.11 mm
1/2″.500012.70 mm
9/16″.562514.29 mm
5/8″.625015.88 mm
11/16″.687517.46 mm
3/4″.750019.05 mm
13/16″.812520.64 mm
7/8″.875022.23 mm
15/16″.937523.81 mm
1″1.0025.40 mm
1 1/4″1.2531.75 mm
1 1/2″1.5038.10 mm
2″2.0050.80 mm

Dimensional tolerances U Bend Tube acc. to TEMA R.C.B.

1) U Bend Pipe Length of straight part -0/+5 mm
Flattening (also called “ovality”) at the bend shall not exceed 10% of the nominal tube outside diameter.
Wall thickness in bending part acc. to TEMA R.C.B 2.31

2) U Bend Tube Minimum tube wall thickness in the bend part (T min)T(min) ≥ (SW × (2×R + D))/( 2× (R+D)
where: SW is smallest wall thickness
D Nominal outside diameter
R radius

3) U Bend Tube Radius tolerance
1) for R 100 mm +/- 3 mm
2) for R ≥ 100 mm +/- 5 mm

4). U bend Pipe Straightness tolerance max. 1,5 mm per 1 m
U Bend Tube ends: plain, vertically cut to the tube axis

U Bend Tube OD in mm can be bent upon agreement: 15.8 16.0 17.0 18.0 19.05 20.0 21.3 25.4 26.7 31.8 32.0 38.1mm

U bend Tube Initial Length
Maximum lengths of 27000mm can be supplied on request

U bend Pipe Bending radius
Minimum: 1.5×OD
Maximum: 1500 mm


Quick Details


Standard:ASTM/ASME A/SA213
ASTM/ASME A/SA249
ASTM/ASME A/SA789
Thickness0.5-5.16mm
0.02"-0.203"
Section ShapRound/Square/rectangular
Place of Origin:Shanghai, China (Mainland)
Application:for Heat Exchanger
Structure Pipe
Technique:Hot Rolled
Cold Drawn
Surface Treatment:Galvanized
Galvanized or as requested
Alloy Or NotNon-alloy
Brand nameTOBO
Secondary Or NotNon-secondary
Lengthrandom,range fixed or fixed length
EndsPlain or beveled ends
UsageThermal Power Plant,heating plant
Section Shape:Round
Outer Diameter(Round)12.7-76.2mm (1/2"-3")
12.7-25.4mm (1/2"-1")

Stainless Steel ubend :

ASTM A403 WP Gr. 304, 304H, 309, 310, 316, 316L, 317L, 321, 347, 904L, 316TI, 316H, 304L

Carbon Steel ubend
ASTM A 234 WPB , WPBW, WPHY 42, WPHY 46, WPHY 52, WPH 60, WPHY 65 & WPHY 70.

Low Temperature Carbon Steel
ASTM A420 WPL3 / A420WPL6

Alloy Steel ubend
ASTM / ASME A/SA 234 Gr. WP 1, WP 5, WP 9, WP 11, WP 12, WP 22, WP 91

Duplex Steel ubend
ASTM A 815 UNS NO S 31803, S 32205, S 32760, S 32750

Copper Nickel
C70600(90:10), C71500(70:30), C71640.


Packing and Shipping

Package:Standard export carton packing.

Delivery time:stock 7-10 workign days after confirming order,detail delivery date should be decided according to

production season and order quantity.



China Thickness 3mm Welded U Fin Tube TP304LN For Feed Water Heater Round Shape supplier

Thickness 3mm Welded U Fin Tube TP304LN For Feed Water Heater Round Shape

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