Stainless Steel 321 Welded Tube

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Neeka Tubes is a global manufacturer of Stainless Steel 321 Welded Tubing, offering premium-quality tubing solutions for various industries. UNS S32100 Welded Tubes are known for their excellent resistance to oxidation and corrosion at high temperatures. These tubes contain titanium, making them ideal for applications requiring high strength, durability and resistance to intergranular corrosion.

Our ASTM A249 Stainless Steel 321 Welded Tubes have a balanced composition of 17-19% chromium, 9-12% nickel and titanium stabilizers for superior performance. They have a density of 7.92 g/cmΒ³, a melting range of 1398-1446Β°C and an elongation of 40%. These tubes exhibit 515 MPa tensile strength, 205 MPa yield strength and 217 Brinell hardness. We have sizes ranging from 6.35 mm O.D to 114.3 mm O.D, with thicknesses between 0.8 mm to 12.7 mm and lengths up to 26 meters. Our tubes adhere to ASTM A249 / ASTM SA249 standards.

Premium Grade SS 321 Welded Tubes, Best Deals On SS 321 Welded Tubes Price, SS 321 Welded Tubes Chart, SS 321 Welded Tubes Sizes, ASTM A312 SS 321 Welded Pipes Suppliers.

Stainless Steel 321 Welded Tubing
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Benefits of Stainless Steel 321 Welded Tubing

Benefits of Stainless Steel 321 Welded Tubing

  • High Heat Resistance – Withstands temperatures up to 900Β°C without scaling.
  • Superior Corrosion Resistance – Resists oxidation, pitting and intergranular corrosion.
  • Excellent Weldability – Easy to fabricate and weld without carbide precipitation.
  • High Mechanical Strength – Retains strength and toughness under high-stress conditions.
  • Long Service Life – Offers durability and longevity in demanding environments.

Stainless Steel 321 Welded Tubes are widely used in aerospace, chemical processing, petroleum refining and heat exchanger systems. They are ideal for boilers, exhaust manifolds, thermal processing equipment and power plants. Their ability to withstand high temperatures makes them suitable for furnace parts and expansion joints.

Most Common Types of SS 321 Welded Tubing

ss-welded-tube

SS 321 Welded Pipe

ss-welded-square-tube

321 SS Welded Square Tube

ss-welded-round-tube

SS 321 Welded Round Tube

ss-welded-rectangular

SS 321 Welded Rectangular Tube

welded

SS 321 Custom Welded Tube

silver-welded-tube

321 Stainless Steel ERW Tube

ss-welded-polished-tube

SS 321 Polished Welded Tube

Stainless steel welded cold-drawn tube for enhanced strength and smooth finish.

SS 321 Welded Cold Drawn Tube

SS 321 Welded Tubing Specifications

Standard SpecificationASTM /ASME A269, A249 /SA269, SA249
Manufacturing TypeERW / Welded / Fabricated / CDW / DOM / CEW / 100% X Ray Welded
Delivery ConditionAnnealed and Pickled (AP), Polished, Bright Annealed (BA), Cold Drawn, MF
Surface FinishBA, 2B, No.4, No.1, No.3, No.8, 8K, HL, 2D, 1D, Mirror Polished, 180G, 320G, 400G Satin/ Hairline, 400G, 500G, 600G or 800G Mirror finish ASME SA249 Standard Tubing or Custom Finish as per customer’s specification
Outside Diameter (OD)6 to 304.8 mm
Wall Thickness Range0.5 to 6 mm
StandardSUS, JIS, AISI, ASTM, GB, DIN, EN
Value Added Services
  • Cutting
  • Beveling
  • Threading
  • Polishing (Electro & Commercial)
  • Draw & Expansion as per required Size & Length
  • Destructive and Non Destructive
  • Ultrasonic Testing
  • Annealed & Pickled Bending
Processing ServiceBending, Welding, Decoiling, Punching, Cutting, Moulding
TechniqueWelded Austenitic Steel Cold drawn, Cold rolled, Hot rolled, Extrusion Tube
Tolerance
  • Outer Diameter: +/- 0.2mm
  • Thickness: +/- 10% OR as customer request
  • Length: +/- 10mm
Test Certificate
  • DFARS compliant
  • EN 10204/3.1B, EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC)
  • 100% Radiography Test Report
  • Raw Materials Certificate
  • Third Party Inspection Report
  • Fumigation Certificates
  • Heat Treatment Charts
  • HS Code Commercial Invoice
  • Form A for Generalized System of Preferences (GSP)
  • Manufacturer Test Certificate
  • Moisture testing
  • Surface roughness measurement
  • Laboratory Test Certificate from Govt. Approved Lab
PackagingPacked in PE Fabric Bundles or ply wooden box wrapped in plastic or Standard seaworthy export packing or as per customers’ request
SS 321 Welded Tubes Dimensions, 321 Stainless Steel Tube Suppliers, TP321 Welded Tubes, Stainless Steel 321 Welded Tubes
NickelMolybdenumChromiumIronTungstenCobaltManganeseVanadiumSiliconPhosphorusSulfurCarbon
99.0% min.0.25% max.0.40% max.0.35% max.0.15% max.0.35% max.0.35% max.0.35% max.0.35% max.0.35% max.0.35% max.0.01% max.
DensityMelting PointTensile StrengthYield Strength (0.2%Offset)Elongation
8.0 g/cm31400 Β°C (2550 Β°F)Psi – 75000 , MPa – 515Psi – 30000 , MPa – 20535 %
STANDARDWERKSTOFF NR.UNSJISBSGOSTAFNOREN
SS 3211.4301S30400SUS 304304S3108Π₯18Н10Z7CN18‐09X5CrNi18-10

Contact Neeka tubes today for a best offer & competitive quotation Of SS 321 Welded Tubing

Please Call on +91 7700067892 or drop an E-Mail : sales@neekatubes.net

SS 321 Welded Tubing Dimensions

OD inchesAve. Wall inchesD/t RatioID inchesTube Cross Sectional Area (in2)Internal Area (in2)
0.2500.02012.500.2100.01450.0346
0.2500.0288.930.1940.01950.0296
0.2500.0357.140.1800.02360.0254
0.2500.0495.100.1520.03090.0181
0.2500.0653.850.1200.03780.0113
0.3750.02018.750.3350.02230.0881
0.3750.02813.390.3190.03050.0799
0.3750.03510.710.3050.03740.0731
0.3750.0497.650.2770.05020.0603
0.3750.0655.770.2450.06330.0471
0.5000.02025.000.4600.03020.1662
0.5000.02817.860.4440.04150.1548
0.5000.03514.290.4300.05110.1452
0.5000.04910.200.4020.06940.1269
0.5000.0657.690.3700.08880.1075
0.5000.0836.020.3340.10870.0876
0.6250.02031.250.5850.03800.2688
0.6250.02822.320.5690.05250.2543
0.6250.03517.860.5550.06490.2419
0.6250.04912.760.5270.08870.2181
0.6250.0659.620.4950.11440.1924
0.6250.0837.530.4590.14130.1655
0.6250.0956.580.4350.15820.1486
0.6250.1095.730.4070.17670.1301
0.7500.02826.790.6940.06350.3783
0.7500.03521.430.6800.07860.3632
0.7500.04915.310.6520.10790.3339
0.7500.06511.540.6200.13990.3019
0.7500.0839.040.5840.17390.2679
0.7500.0957.890.5600.19550.2463
0.7500.1096.880.5320.21950.2223
0.7500.1206.250.5100.23750.2043
0.8750.02043.750.8350.05370.5476
0.8750.02831.250.8190.07450.5268
0.8750.03525.000.8050.09240.5090
0.8750.04917.860.7770.12720.4742
0.8750.06513.460.7450.16540.4359
0.8750.08310.540.7090.20650.3948
0.8750.0959.210.6850.23280.3685
0.8750.1098.030.6570.26230.3390
0.8750.1207.290.6350.28460.3167
1.0000.02835.710.9440.08550.6999
1.0000.03528.570.9300.10610.6793
1.0000.04920.410.9020.14640.6390
1.0000.06515.380.8700.19090.5945
1.0000.08312.050.8340.23910.5463
1.0000.09510.530.8100.27010.5153
1.0000.1099.170.7820.30510.4803
1.0000.1208.330.7600.33180.4536
1.0000.1347.460.7320.36460.4208
1.2500.03535.711.1800.13361.0936
1.2500.04925.511.1520.18491.0423
1.2500.06519.231.1200.24200.9852
1.2500.08315.061.0840.30430.9229
1.2500.09513.161.0600.34470.8825
1.2500.10911.471.0320.39070.8365
1.2500.12010.421.0100.42600.8012
1.2500.1349.330.9820.46980.7574
1.5000.03542.861.4300.16111.6061
1.5000.04930.611.4020.22341.5438
1.5000.06523.081.3700.29301.4741
1.5000.08318.071.3340.36951.3977
1.5000.09515.791.3100.41931.3478
1.5000.10913.761.2820.47631.2908
1.5000.12012.501.2600.52021.2469
1.5000.13411.191.2320.57501.1921
1.5000.14810.141.2040.62861.1385
1.7500.03550.001.6800.18862.2167
1.7500.04940.821.9020.30032.8413
1.7500.06526.921.6200.34412.0612
1.7500.08321.081.5840.43471.9706
1.7500.09518.421.5600.49391.9113
1.7500.10916.061.5320.56191.8433
1.7500.12014.581.5100.61451.7908
1.7500.13413.061.4820.68031.7250
1.7500.14811.821.4540.74491.6604
1.7500.16510.611.4200.82161.5837
2.0000.03557.141.9300.21612.9255
2.0000.04940.821.9020.30032.8413
2.0000.06530.771.8700.39512.7465
2.0000.08324.101.8340.49992.6417
2.0000.09521.051.8100.56852.5730
2.0000.10918.351.7820.64752.4941
2.0000.12016.671.7600.70872.4328
2.0000.13414.931.7320.78552.3561
2.0000.14813.511.7040.86112.2805
2.0000.16512.121.6700.95122.1904

SS 321 Welded Tubing Weight Chart

Diameter Outside- A x material- thickness t (mm)Weight kg/meterDiameter Outside- A x thickness- stΓ€rke t (mm)Weight kg/meter
12×20,5157×34,11
17×1,50,7763,5×22,36
17×20,9370×1,52,61
18×10,4370×23,45
18×1,50,6370×35,11
18×20,8175×23,71
20×10,4876,1×1,63,03
20×1,50,7076,1×23,76
20×20,9176,1×2,64,85
14×10,3360,3×22,96
14×1,50,4860,3×2,63,81
15×10,3660,3×2,94,23
15×1,50,5160,3×34,37
15×20,6660,3×3,34,71
16×10,3860,3×3,65,18
16×1,50,5560,3×45,72
16×20,7160,3×57,02
17×10,6063,5×1,52,36
10×10,2354×22,64
10×1,50,3255×22,69
12×10,2857×1,52,11
20×31,3076,1×35,39
21,3×10,8076,1×3,76,72
21,3×1,50,9880×1,52,99
21,3×2,61,2380×23,96
22×10,5380×35,87
6×10,1353×1,51,96
8×10,1854×1,52,00
13×10,3060,3×11,51
13×1,50,4460,3×1,52,24
12×1,50,4057×22,79
22×1,50,7880×47,72
23×21,0784×24,17
24×10,8685×24,22
24×1,50,5888,9×24,41
25×10,6188,9×2,65,70
25×1,50,9088,9×36,55
25×21,1788,9×3,16,65
25×2,51,4388,9×48,63

SS 321 Welded Tubing Packing & Marking

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Marking Details and packaging

To ensure damage-free transportation, ASTM A249 Stainless Steel 321 Welded Tubes are packed in wooden cases, plastic wrapping and bundles with proper end caps. Each tube is marked with grade, size, heat number and standards for complete traceability. We guarantee timely delivery to meet customer requirements efficiently.

Certifications

Our SS 321 welded tubing undergoes hydrostatic testing, PMI testing, ultrasonic testing and mechanical property analysis to ensure top-notch quality. We provide Mill Test Certificates (MTC), EN 10204 3.1/3.2 certification and third-party inspection reports for quality assurance.

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Industrial Application of SS 321 Welded Tubing

Oil & Gas
Oil & Gas
Cement
Cement
Chemical
Chemical
Marine
Marine
Petrochemical
Petrochemical
Pharmaceuticals
Pharmaceuticals
Power Plant
Power Plant