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Stainless steel u tube

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What is stainless steel u tube?

A U Tubes are typically used for applications that involve heat and elevated pressure levels like heat exchangers. The Stainless Steel U Tube can be exactly customized according to the drawings and specifications given by the client. Depending on the exact grade of the tubes, they can resist corrosion and display yield strength. They are strategically used in critical fields like nuclear and petrochemical machine building.

The Stainless Steel U Shaped Tubes can also be used in hot oil systems or stem condensing. It helps to seal the module, and as a result, the water will not decompose, preventing the foul odor. They help to raise the concentration of dissolved oxygen in wastewater.

SS welded u tubes and Stainless steel u bend tube manufacturer in India

Stainless steel u tube manufacturer in India

SS welded u tube vs seamless u tube

The Stainless Steel Welded U Tubes are produced from a roll formed strip that is welded to produce a tube. The seamless tubing is produced by the extrusion process. The tubes are extruded and then drawn from a billet. The manufacturing processes lead to different characteristics of the seamless and welded tubes. For example, the seamless U-Bend Tubes are stronger and offer better leakage proofing than the welded variants. This is why they are preferred for critical applications. The SS Welded U Tubes are more affordable and available in long continuous lengths.

ASTM A213 u tubing and Stainless steel 304 U-bend tubes supplier in Gujarat

Stainless Steel U Tube

Stainless Steel U Tube

SS Welded U Tubes

SS Welded U Tubes

Stainless Steel U Bend Tube

Stainless Steel U Bend Tube

Advantages & disadvantages of SS u bend tubes

Advantages:

  • Stainless Steel U Bend Tubes can maximize heat transfer by creating an efficient layout inside the heat exchangers.
  • They can fit in tight spaces.
  • U bend tubes can withstand thermal stress caused due to temperature fluctuations inside the heat exchanger.
  • Stainless Steel U Bend Tubes For Heat Exchanger can minimize fouling and possess high durability.

Disadvantages:

  • The fabrication process for Stainless Steel U Bend Tubes is quite complex.
  • The U-shape can cause flow restrictions.
  • There is a limitation on their minimum bent radius.
  • Cleaning SS 316ti U Bend Tubes can be a bit challenging than the straight tubes. Thus, specialized tools might be required for keeping the tube clean.

Stainless steel u shaped tubes and SS 316 u bend tube are designed to operate at temperatures in between 80 to 150 °C

Table of Contents


Stainless steel u tube manufacturer

Specifications of Stainless steel U tube

U bend tubes hs code Size Outside Diameter
74121000 6.35 Mm OD to 273 Mm OD 9.52 mm O.D to 50.80 mm O.D
Thickness Standards Types
0.7 mm to 3.68 mm ASTM A213, ASME SA213 Seamless , Welded
Stockist of Stainless steel welded u tube and SS seamless u tubes in grade 304, 304L, 316 & 316L

SS welded U tubes types

ASTM A213 U Tubing

ASTM A213 U Tubing

U-Bend Tubes

U-Bend Tubes

Stainless Steel U Shaped Tubes

Stainless Steel U Shaped Tubes

SS 316ti U Bend Tubes

SS 316ti U Bend Tubes

Stainless Steel Welded U Tube

Stainless Steel Welded U Tube

304 stainless steel u tube

304 stainless steel u tube

Stainless Steel 316 U Bend Tube

Stainless Steel 316 U Bend Tube

SA 213 TP304 Welded U Tubes

SA 213 TP304 Welded U Tubes

SS Seamless U Tubes

SS Seamless U Tubes

SS 316TI u bend tubes supplier in India, check Stainless steel welded U tubes equivalent and stock

Stainless steel U bend tube dimension

Wall thickness in mm. 0.5 0.6 0.7 0.8 1 1.2 1.6 2 2.6 3 3.2 3.6
O.D. in mm. Weight in kg/meter
15.87 0.192 0.229 0.266 0.301 0.372 0.44 0.571 0.694
19 0.231 0.276 0.32 0.364 0.45 0.534 0.696 0.85 1.066 1.2 1.264
25 0.306 0.366 0.425 0.484 0.6 0.714 0.936 1.15 1.456 1.65 1.744 1.926
25.4 0.311 0.372 0.432 0.492 0.61 0.726 0.952 1.17 1.482 1.68 1.776 1.962
31.8 0.918 1.208 1.49 1.898 2.16 2.288 2.538
6 0.069 0.081 0.093 0.104 0.125 0.144 0.176
9.52 0.112 0.134 0.154 0.174 0.213 0.249 0.317 – – – – –
10 0.119 0.141 0.163 0.184 0.225 0.264 0.336 – – – – –
12.7 0.153 0.182 0.21 0.238 0.293 0.345 0.444 – – – – –
14 0.169 0.201 0.233 0.264 0.325 0.384 0.496 – – – – –
38 – – – – – 1.104 1.456 1.8 2.301 2.625 2.784 3.096
44.5 – – – – – 1.299 1.716 2.125 2.724 3.113 3.304 3.681
50.8 – – – – – 1.488 1.968 2.44 3.133 3.585 3.808 4.248
63.5 – – – – – – 2.476 3.075 3.959 4.538 4.824 5.391
76.1 – – – – – – 2.98 3.705 4.778 5.483 5.832 6.525
101.6 – – – – – – 4 4.98 6 7 7,872 8.82

ASTM A213 U tubing pressure rating

Outer diameter (Decimal) Outer diameter   (Fraction) 0.109 0.065 0.095 0.120 0.028 0.083 0.035 0.049 0.058 0.072
0.875 7/8 3397 2026 2587 3740 1808 873 2961 1527 1091 2244
11211 6686 8537 12343 5966 2880 9771 5040 3600 7406
0.563 9/16 5280 3149 4021 5813 2810 1356 4602 2374 1695 3488
17425 10391 13268 19183 9272 4476 15187 7833 5595 11510
1.750 1 3/4 1699 1013 1294 1870 904 436 1481 764 545 1122
5606 3343 4269 6171 2983 1440 4886 2520 1800 3703
1.125 1 1/8 2642 1576 2012 2909 1406 679 2303 1188 848 1745
8720 5200 6640 9600 4640 2240 7600 3920 2800 5760
0.625 5/8 4756 2836 3622 5236 2531 1222 4145 2138 1527 3142
15696 9360 11952 17280 8352 4032 13680 7056 5040 10368
0.688 11/16 4321 2577 3290 4757 2299 1110 3766 1942 1387 2854
14259 8503 10858 15698 7587 3663 12427 6410 4578 9419
0.188 3/16           4062   7108 5077  
          13404   23457 16755  
0.250 1/4   7091     6327 3055   5345 3818  
  23400     20880 10080   17640 12600  
0.313 5/16   5664 7232   5054 2440   4270 3050 6274
  18690 23866   16677 8051   14089 10064 20703
0.125 1/8           6109   10691 7636  
          20160   35280 25200  
0.375 3/8 7927 4727 6036 8727 4218 2036 6909 3564 2545 5236
26160 15600 19920 28800 13920 6720 22800 11760 8400 17280
0.438 7/16 6787 4047 5168 7472 3611 1743 5915 3051 2179 4483
22397 13356 17055 24658 11918 5753 19521 10068 7192 14795
0.500 1/2 5945 3545 4527 6545 3164 1527 5182 2673 1909 3927
19620 11700 14940 21600 10440 5040 17100 8820 6300 12960
0.750 3/4 3964 2364 3018 4364 2109 1018 3455 1782 1273 2618
13080 7800 9960 14400 6960 3360 11400 5880 4200 8640
1.000 1 2973 1773 2264 3273 1582 764 2591 1336 955 1964
9810 5850 7470 10800 5220 2520 8550 4410 3150 6480
1.250 1 1/4 2378 1418 1811 2618 1265 611 2073 1069 764 1571
7848 4680 5976 8640 4176 2016 6840 3528 2520 5184
1.500 1 1/2 1982 1182 1509 2182 1055 509 1727 891 636 1309
6540 3900 4980 7200 3480 1680 5700 2940 2100 4320
2.000 2 1486 886 1132 1636 791 382 1295 668 477 982
4905 2925 3735 5400 2610 1260 4275 2205 1575 3240

Chemical composition of U-bend tubes

Grades Sulfur Carbon Manganese Silicon Phosphorus Nickel Molybdenum Chromium
TP304L 0.03 0.035 2 1 0.045 8.0-13.0 18.0-20.0
TP304 0.03 0.08 2 1 0.045 8.0-11.0 18.0-20.0
TP316 0.03 0.08 2 1 0.045 11.0-14.0 2.0-3.0 16.0-18.0
TP316L 0.03 0.035 2 1 0.045 10.0-14.0 2.0-3.0 16.0-18.0

Stainless steel U shaped tubes mechanical properties

Grade Temperure Yield Strength Heat Elongation Tensile Strength
º F(º C) Ksi (MPa), Min. Treatment Ksi (MPa), Min.
TP304L 1900 (1040) 25(170) Solution 35 70(485)
TP304 1900 (1040) 30(205) Solution 35 75(515)
TP316 1900(1040) 30(205) Solution 35 75(515)
TP316L 1900(1040) 25(170) Solution 35 70(485)

SS 316TI U bend tubes schedule chart

GAUGE TYPICAL VALUE (INCHES) THICKNESS RANGE(INCHES)
15 0.072 0.066 through 0.074
14 0.083 0.075 through 0.085
13 0.095 0.087 through 0.097
12 0.109 0.101 through 0.111
11 0.12 0.112 through 0.122
22 0.028 0.025 through 0.029
20 0.035 0.031 through 0.035
19 0.042 0.038 through 0.042
18 0.049 0.044 through 0.049
17 0.058 0.053 through 0.058
16 0.065 0.060 through 0.065
10 0.134 0.126 through 0.136
9 0.148 0.140 through 0.150
8 0.165 0.157 through 0.167
7 0.18 0.175 through 0.185

Stainless steel welded U tubes equivalent

STANDARD JIS WERKSTOFF NR. UNS BS AFNOR GOST EN
SS 304 SUS 304 1.4301 S30400 304S31 Z7CN18‐09 08Х18Н10 X5CrNi18-10
SS 316L SUS 316L 1.4404 / 1.4435 S31603 316S11 / 316S13 Z3CND17‐11‐02 / Z3CND18‐14‐03 03Ch17N14M3 / 03Ch17N14M2 X2CrNiMo17-12-2 / X2CrNiMo18-14-3
SS 317L SUS 317L 1.4438 S31703 – – – X2CrNiMo18-15-4
SS 321 SUS 321 1.4541 S32100 – – – X6CrNiTi18-10
SS 304L SUS 304L 1.4306 / 1.4307 S30403 3304S11 Z3CN18‐10 03Х18Н11 X2CrNi18-9 / X2CrNi19-11
SS 310 SUS 310 1.4841 S31000 310S24 – 20Ch25N20S2 X15CrNi25-20
SS 316 SUS 316 1.4401 / 1.4436 S31600 316S31 / 316S33 Z7CND17‐11‐02 – X5CrNiMo17-12-2 / X3CrNiMo17-13-3
SS 347 SUS 347 1.4550 S34700 – – 08Ch18N12B X6CrNiNb18-10
SS 904L SUS 904L 1.4539 N08904 904S13 Z2 NCDU 25-20 STS 317J5L X1NiCrMoCu25-20-5

Stainless steel welded U tubes equivalent

SS Seamless U Tube Size SS Welded U Tube Size
OD Wall ID OD Wall ID
3/8” .035 .305 3/8” .035 .305
(.3750”) .049 .277 (.3750”) .049 .277
.065 .245 1/2” .035 .430
1/2” .035 .430 (.5000”) .049 .402
(.5000”) .049 .402 5/8” .049 .527
.065 .370 (.6250”)
1/16” .010 .043 1/8” .020 .085
(.0625”) .020 .023 (.1250”) .028 .069
1/8” .035 .055 .035 .055
(.1250”) 1/4” .020 .210
1/4” .035 .180 (.2500”) .028 .194
(.2500”) .049 .152 .035 .180
.065 .120 .049 .152
5/8” .035 .555 3/4” .035 .680
(.6250”) .049 .527 (.7500”) .049 .652
3/4” .035 .680 .065 .620
(.7500”) .049 .652 .083 .584
.065 .620
.083 .584
.109 .532