Stainless Steel Welded Tube

Stainless steel welded tubes are durable materials that find applications in various industries, including construction, automotive and high-tech sectors. They possess properties such as stability, resistance to corrosion and an excellent strength-to-weight ratio, making them perfect for various industrial uses.


These tubes are formed by bending and welding stainless steel strips, which offers advantages. The welding process ensures strength, allowing the tubes to withstand structural strain. This quality is particularly crucial for construction projects and industrial equipment. Additionally, the welding process provides a finish that minimizes the risk of leaks or breaches.


One notable characteristic of steel welded tubes is their resistance to corrosion compared to traditional iron or steel tubes. This enhanced resistance can be attributed to the addition of chromium in their composition. When exposed to oxygen, chromium forms a protective oxide layer on the surface of the steel. This layer protects against environments, making these tubes ideal for use in prone areas, like marine and chemical industries.


Moreover, these tubes exhibit heat and fire resistance properties, making them highly preferred in industries operating under high-temperature conditions. They maintain their shape and integrity when subjected to temperatures, reducing the risk of material deformation or failure.
Steel's attractive appearance should not be overlooked either. The sleek and contemporary design is highly appreciated in architecture, making stainless steel tubes a choice for both external structures.


Stainless steel is completely recyclable with degradation. This means that the tubes can be melted down and repurposed, reducing waste and contributing to sustainability efforts.


Stainless steel welded tubes exemplify efficiency, durability and versatility. Their exceptional strength, resistance to corrosion and heat, and eco-friendliness make them an ideal option for various industries.

Specification

Standards -
Types Welded, Seamless, ERW, Fabricated, CEW, CDW, CDS, DOM
Size range 1/2" OD - 12" OD
Production technique Decoiling, Punching, Bending, Welding,  Cutting, Moulding
Standards ASTM, AISI, JIS, DIN, EN, SUS, GB
Form Round, Hydraulic,  Coiled,  Square,  U Shape,  Rectangular,  Straight,  Honed Tubes,  Pan Cake Coils
Thickness Range SCH 10, SCH 160, SCH XXH, SCH XXS, SCH 5, SCH 40, SCH XS, SCH 80S, SCH 80
Custom Size/Thickness Available
End Treaded, Beveled End, Plain End
Surface Finish 8K,  1D,  No.3,  180G,  BA,  No.4,  500G,  No.1,  Mirror Polished,  320G,  HL,  No.8, 400G,  2B,  600G or 800G Mirror finish Tubing,  2D,  400G Satin/ Hairline or Custom Finish as per customer's specification.
Marking Standard
Name of Manufacturer
Schedule
Pressure Class
Tube Size, etc
Test Certificates
Third Party Inspection Report
Manufacturer Test Certificate
Raw Materials Certificate
100% Radiography Test Report
Laboratory Test Certificate from Govt. Approved Lab
EN 10204/3.1B, EN 10204 3.1 and EN 10204 3.2 Material Test Certificates (MTC)

Available Tubes in Our Warehouse

Thin Wall Tubing

Thin Wall Tubing

Seamless Tube

Seamless Tube

Erw Tube

Erw Tube

Bright Annealed Tube

Bright Annealed Tube

Coil Tubing

Coil Tubing

Condenser Tube

Condenser Tube

Welded Tube

Welded Tube

Heat Exchanger Tube

Heat Exchanger Tube

Small Diameter Tubing

Small Diameter Tubing

Equivalent Grades

STANDARDWERKSTOFF NR.UNSJISBSGOSTAFNOREN
SS 3041.4301S30400SUS 304304S3108Х18Н10Z7CN18‐09X5CrNi18-10
SS 304L1.4306 / 1.4307S30403SUS 304L3304S1103Х18Н11Z3CN18‐10X2CrNi18-9 / X2CrNi19-11
SS 304H1.4301S30409
SS 3101.4841S31000SUS 310310S2420Ch25N20S2X15CrNi25-20
SS 310S1.4845S31008SUS 310S310S1620Ch23N18X8CrNi25-21
SS 310HS31009
SS 3161.4401 / 1.4436S31600SUS 316316S31 / 316S33Z7CND17‐11‐02X5CrNiMo17-12-2 / X3CrNiMo17-13-3
SS 316L1.4404 / 1.4435S31603SUS 316L316S11 / 316S1303Ch17N14M3 / 03Ch17N14M2Z3CND17‐11‐02 / Z3CND18‐14‐03X2CrNiMo17-12-2 / X2CrNiMo18-14-3
SS 316H1.4401S31609
SS 316Ti1.4571S31635SUS 316Ti320S3108Ch17N13M2TZ6CNDT17‐123X6CrNiMoTi17-12-2
SS 3171.4449S31700SUS 317
SS 317L1.4438S31703SUS 317LX2CrNiMo18-15-4
SS 3211.4541S32100SUS 321X6CrNiTi18-10
SS 321H1.4878S32109SUS 321HX12CrNiTi18-9
SS 3471.4550S34700SUS 34708Ch18N12BX6CrNiNb18-10
SS 347H1.4961S34709SUS 347HX6CrNiNb18-12
SS 904L1.4539N08904SUS 904L904S13STS 317J5LZ2 NCDU 25-20X1NiCrMoCu25-20-5

Chemical Composition

GradeCMnSiPSCrMoNiNTiFe
304min.18.08.0
max.0.082.00.750.0450.03020.010.50.10
304Lmin.18.08.0
max.0.0302.00.750.0450.03020.012.00.10
304Hmin.0.0418.08.0
max.0.0102.00.750.0450.03020.010.5
SS 3100.015 max2 max0.015 max0.020 max0.015 max24.00 26.000.10 max19.00 21.0054.7 min
SS 310S0.08 max2 max1.00 max0.045 max0.030 max24.00 26.000.75 max19.00 21.0053.095 min
SS 310H0.04 0.102 max1.00 max0.045 max0.030 max24.00 26.0019.00 21.0053.885 min
316min.16.02.03.010.0 
max.0.0352.00.750.0450.03018.014.0 
316Lmin.16.02.03.010.0  
max.0.0352.00.750.0450.03018.014.0 
316TI0.08 max10.00 14.002.0 max0.045 max0.030 max16.00 18.000.75 max2.00 3.00
3170.08 max2 max1 max0.045 max0.030 max18.00 20.003.00 4.0057.845 min
SS 317L0.035 max2.0 max1.0 max0.045 max0.030 max18.00 20.003.00 4.0011.00 15.0057.89 min
SS 3210.08 max2.0 max1.0 max0.045 max0.030 max17.00 19.009.00 12.000.10 max5(C+N) 0.70 max
SS 321H0.04 0.102.0 max1.0 max0.045 max0.030 max17.00 19.009.00 12.000.10 max4(C+N) 0.70 max
347/ 347H0.08 max2.0 max1.0 max0.045 max0.030 max17.00 20.009.0013.00
410min.11.5
max.0.151.01.000.0400.03013.50.75
446min.23.00.10
max.0.21.50.750.0400.03030.00.500.25
904Lmin.19.04.0023.000.10
max.0.202.001.000.0450.03523.05.0028.000.25

Mechanical Properties

GradeDensityMelting PointTensile StrengthYield Strength (0.2%Offset)Elongation
304/ 304L8.0 g/cm31400 °C (2550 °F)Psi 75000 , MPa 515Psi 30000 , MPa 20535 %
304H8.0 g/cm31400 °C (2550 °F)Psi 75000 , MPa 515Psi 30000 , MPa 20540 %
310 / 310S / 310H7.9 g/cm31402 °C (2555 °F)Psi 75000 , MPa 515Psi 30000 , MPa 20540 %
306/ 316H8.0 g/cm31400 °C (2550 °F)Psi 75000 , MPa 515Psi 30000 , MPa 20535 %
316L8.0 g/cm31399 °C (2550 °F)Psi 75000 , MPa 515Psi 30000 , MPa 20535 %
3177.9 g/cm31400 °C (2550 °F)Psi 75000 , MPa 515Psi 30000 , MPa 20535 %
3218.0 g/cm31457 °C (2650 °F)Psi 75000 , MPa 515Psi 30000 , MPa 20535 %
3478.0 g/cm31454 °C (2650 °F)Psi 75000 , MPa 515Psi 30000 , MPa 20535 %
904L7.95 g/cm31350 °C (2460 °F)Psi 71000 , MPa 490Psi 32000 , MPa 22035 %

Nominal Wall Thickness Of SS Welded Tube

NPS DesignatorOutside Diameter in.Schedule 5S in.Schedule 10S in.Schedule 40S in.Schedule 80S in.
1/40.5400.0650.0880.119
3/80.6750.0650.0910.126
1/20.8400.0650.0830.1090.147
3/41.0500.0650.0830.1130.154
1.01.3150.0650.1090.1330.179
1 1/41.6600.0650.1090.1400.191
1 1/21.9000.0650.1090.1450.200
22.3750.0650.1090.1540.218
2 1/22.8750.0830.1200.2030.276
33.5000.0830.1200.2160.300
3 1/24.0000.0830.1200.2260.318
44.5000.0830.1200.2370.337
55.5630.1090.1340.2580.375
66.6250.1090.1340.2800.432
88.6250.1090.1480.3220.500
1010.7500.1340.1650.3650.500
1212.7500.1560.1800.3750.500

ANSI Pipe SCH5 To SCH40 Chart

Pipe SizeO.D. Inches5sTRUE 510sTRUE 10203040s & STDTRUE 4060
1/80.4050.350.0490.0490.0680.068
0.13830.18630.18630.24470.2447
1/40.540.0490.0650.0650.0880.088
0.2570.32970.32970.42480.4248
3/80.6750.0490.0650.0650.0910.091
0.32760.42350.42350.56760.5676
1/20.840.0650.0650.0830.0830.1090.109
0.53830.53830.6710.6710.8510.851
3/41.050.0650.0650.0830.0830.1130.113
0.68380.68380.85720.85721.1311.131
11.3150.0650.0650.1090.190.1330.133
0.86780.86781.4041.4041.6791.679
1 1/41.660.0650.0650.1090.1090.140.14
1.1071.1071.8061.8062.2732.273
1 1/21.90.0650.0650.1090.1090.1450.145
1.2741.2742.6382.6382.7182.718
22.3750.0650.0650.1090.1090.1540.154
1.6041.6042.6382.6383.6533.653
2 1/22.8750.0830.0830.120.120.2030.203
2.4752.4753.5313.5315.7935.793
33.50.0830.0830.120.120.2160.216
3.0293.0294.3324.3327.5767.576
3 1/240.0830.0830.120.120.2260.226
3.4723.4724.974.979.1099.109
44.50.0830.0830.120.120.2370.2370.281
3.9153.9155.6135.61310.7910.7912.66
4 1/250.247
12.53
55.5630.1090.1090.1340.1340.2580.258
6.3496.3497.777.7714.6214.62
66.6250.1090.1090.1340.1340.280.28
7.5857.5859.2899.28918.9718.97
77.6250.301
23.57
88.6250.1090.1090.1480.1480.250.2770.3220.3220.406
9.9149.91413.413.422.3624.728.5528.5535.64
99.6250.342
33.9
1010.750.1340.1340.1650.1650.250.3070.3650.3650.5
15.1915.1918.6518.6528.0434.2440.4840.4854.74
1111.750.375
45.55
1212.750.1560.1650.180.180.250.330.3750.4060.562
21.0722.1824.224.233.3843.7749.5653.5373.16
14140.1560.1880.250.3120.3750.3750.4370.593
23.0627.7336.7145.6854.5754.5763.6784.91
16160.1650.1880.250.3120.3750.3750.50.656
27.931.7542.0552.3662.5862.5882.77107.5
18180.1650.1880.250.3120.4370.3750.5620.75
31.4335.7647.3959.0382.0670.59104.8138.2
20200.1880.2180.250.3750.50.3750.5930.812
39.7846.0552.7378.6104.178.6122.9166.4
24240.2180.250.250.3750.5620.3750.6870.968
55.3763.4163.4194.62140.894.62171.2238.1
26260.3120.50.375
85.6136.2102.6
28280.3120.50.6250.375
92.26146.8182.7110.6
30300.250.3120.3120.50.6250.375
79.4398.9398.93157.5196.1118.6
32320.3120.50.6250.3750.688
105.6168.2209.4126.7230.1
34340.3120.50.6250.3750.688
112.3178.9222.8134.7244.8
36360.3120.6250.3750.75
118.9236.1142.7282.3
40400.375
158.7
42420.375
166.7
48480.375
190.7

Tolerances Of SS Welded Tube

NPS DesignatorPermissible Variations in Outside Diameter
Over In.Under In.
1/8 to 1-1/2, incl1/64 (0.015)1/32 (0.031)
Over 1-1/2 to 4, incl1/32 (0.031)1/32 (0.031)
Over 4 to 8, incl1/16 (0.062)1/32 (0.031)
Over 8 to 18, incl3/23 (0.093)1/32 (0.031)

Application

Aerospace

Cleaning Factories

Food Processing

Food Processing

Oil and Gas

Oil and Gas

Pharmaceutical

Pharmaceutical

Power Plant

Power Plant

Ship Building

Ship Building

Water Systems

Water Systems

Refinery

Refinery