Stainless Steel Welded ‘U’ Tubes

  • Scoda Tubes Limited is one of India’s most trusted Stainless Steel Welded U-Tubes manufacturing company that producing High-Quality of Stainless Steel ERW Tubing.
  • We provide Welded U-Tubes in different OD Sizes, Wall Thickness and Grades as per customized requirements are given by our clients.
  • We Use High-Quality Coils for Manufacturing Stainless Steel Welded U-Tubes.
  • We are able to supply Bead Rolled erw U-Tubes with Solution Annealed, Passivated, and Mirror Polished.
  • We assure Quality of Closer Dimensional Tolerances with higher corrosion resistance Stainless Steel Welded U-Tubes.

Product Range

Outside Diameter9.52 mm to 50.8 mm
Walll Thickness0.7 mm to 3.2 mm
GradeTP 304/L/H, TP 316/L/H/Ti
SpecificationASTM, ASME, DIN EN (GERMAN), NF (AFNOR), JIS (JAPAN)
  • Ability to supply tubes with stringent NDT Testing, Special Chemistry, Lower Residual Stress values, higher Corrosion Resistance etc.
  • Welded & Bead Rolled / Welded & Cold Drawn
  • Controlled dimensional tolerance as per customer requirement.
  • Solution Annealed & Passivated
  • Stabilization Heat Treatment
Stainless Steel U Tube Manufacturing Process - Scoda Tubes Ltd

The mother hollow is then drawn with the help of Tungsten Carbide Die and Plug to get the desired diameter and thickness. It is then annealed, straightened, cut, deburred, pickled and passivated. The tubes then undergo a 100% hydro-testing, visual and dimensional examination, 100% PMI testing They are then marked and suitably packed before dispatch.

  • Heat Exchanger
  • Condensor
  • HP Heater
  • LP Heater
  • Oil & Gas
  • Airfin Cooler
  • Petrochemical & Refinery
  • Fertilizer

FAQ

  • We, SCODA TUBES LIMITED are a Professional Manufacturer and Delivering Best Quality Solution for Stainless Steel Pipes and Tubes.
  • We mainly produce Stainless Steel Seamless & Welded - Pipes, Tubes, Heat Exchanger Tubes, High Precision and Instrumentation Tubing.
  • Since 2008, We have delivered the Extreme Quality Solution for Pipes and Tubes to our Renowned Customer that makes us one of the Leading Stainless Steel Pipes and Tubes Manufacturer Company in India.
Scoda Tubes Ltd has followed Quality Standards for all of Manufacturing Process Stages right from Raw Material, Cold Rolling till the Final Tubular Product is Ready for Dispatch.
  1. We also provide you Material Test Certificates according to Standards.
  2. We are willing to accept the Third party Inspection Agency like…EIL, IBR, BVIS, LRA, INTERTEK, SGS, TUV NORD, TUV SUD, DNV, CEIL, GULF LLOYDS, VELOCY, IRS, BAXCOUNSEL, ABS, etc..
  • Yes. If you have special requirements on Products for Outside Diameter, Thickness, Length, etc. or Packages for a wooden box, Plastic Packaging etc.
  • We accept it as per Quality Standard and do customization for you.
  • Generally, our MOQ is 1 ton. But if you want to place a trial order as the beginning of our cooperation, we can accept a smaller quantity at first.
  • Surely we will have a further and longer partnership after the beginning.
  • Free samples can be provided as you required. You need only to bear the freight cost.
  • Scoda Tubes Ltd., We are strictly focused on Quality at producing Pipes and Tubes starting from Raw material, Cold rolling till the Final Tubular Product is Ready for Dispatch.
  • Since 2008, We have delivered the Extreme Quality Solution for Pipes and Tubes to our Renowned Customer that makes us one of the Leading Stainless Steel Pipes and Tubes Manufacturer Company in India.

START NOW! YOUR BIG OPPORTUNITY MAY BE RIGHT WHERE YOU ARE!

We’d love to hear about your awesome project requirements, Don’t hesitate to get in touch with us. Approach us as your project partner.

Let's talk about Your Requirements

Specification of ASTM/ASME, German (EN), NF, JIS for Stainless Steel Seamless and Welded – Pipes and Tubes

STANDARDSPICIFICATIONAPPLICABLE TO
ASTM / ASMEA / SA 213For Seamless Tubes mainly applicable to Heat Exchangers, Super Heater & Steel Boilers
A / SA 249For Welded Tubes mainly applicable to Heat Exchangers, Boilers, Condenser, Super Heater, etc.
A / SA 268For Seamless & Welded Tubes for General Services
A / SA 269For Seamless & Welded Tubes for General Services
A / SA 312For Seamless & Welded Pipes
A / SA 358For Welded Pipes
A / SA 688For Welded Water Heater & Heat Exchangers U-Tubes
A / SA 789For Seamless & Welded Duplex Stainless Steel Tubes, Pipes & U-Tubes.
GERMAN (EN)DIN 17456For Seamless Tubes For General Services.
DIN 17457For Welded Tubes For Specific OR Special Requirements.
DIN 10216-5For Seamless Tubes For Specific OR Special Requirements.
DIN 10217-5For Welded Tubes For Specific OR Special Requirements.
NFNF A 49-117For Seamless Ferritic & Austenitic Stainless Steel Tubes for General Services.
NF A 49-217For Seamless Ferritic, Austenitic Stainless Steel Tubes For Heat Exchangers.
JISJIS G 3459For Stainless Steel Pipes.
JIS G 3463For Stainless Steel Boiler & Heat Exchanger Tubes.

Highlight of ASTM A-688 Stainless Steel Seamless U Tubes

Specifications

Allowable Outside Diameter Variations
in mm

Allowable Wall
Variations in %

Exact length Tolerances in mm

Testing

ASTMA-688 Welded Feed water heater 'U'Tubes

Diameter
Over
Under
Over
Under
Over
Under
• Tension Test
• Flattening Test
• Flange Test
• Reverse Bend Test
• Hardness Test
• Reverse Flattening Test
• 100% Hydrostatic Test or NDT
• Air under water test

Under 38.10 mm

0.1016
0.1016
+20



+10
-10
(For Avg. Walk thk)

-0
(for Min. Walk thk)
3 to 13
0

Material Grades of UNS, ASTM/ASME (TP), DIN/EN for Austenitic, Ferratic/Martensitic, Duplex

MATERIALUNS GRADEASTM / ASME GRADE (TP)EQUIVALENT GRADE ( DIN / EN )
AUSTENITICS 304003041.4301
S 30403304 L1.4306 / 1.4307
S 30409304 H1.4948
S 30400 / S 30403304 / 304 L1.4301 / 1.4306
S 316003161.4401
S 31603316 L1.4404
S 31609316 H1.4919
S 31600 / S 31609316 / 316 L1.4401 / 1.4404
S 31635316 Ti1.4571
S 321003211.4541
S 32109321 H1.4941
S 32100 / S 32109321 / 321 H1.4541 / 1.4941
FERRATIC/MARTENSITICS 405004051.4002
S 410004101.4006
S 430004301.4016
DUPLEX & Super DuplexS 3180322051.4462
S 3275025071.4410

Chemical Compensation in Detailed

Grade AISIChemical Composition - Percent
C MaxMn MaxP MaxS MaxSi MaxCrNiMoOther Element
3040.0820.0450.030.7518.00-20.008.00-11.00--
304L0.03520.0450.030.7518.00-20.008.00-13.00--
304H0.04-0.1020.0450.030.7518.00-20.008.00-11.00--
3100.2520.0450.031.524.00-26.0019.00-22.00--
310s0.0820.0450.031.524.00-26.0019.00-22.00--
3160.0820.0450.030.7516.00-18.0011.00-14.002.00-3.00-
316L0.03520.0450.030.7516.00-18.0010.00-15.002.00-3.00-
316H0.04-0.1020.0450.030.7516.00-18.0011.00-14.002.00-3.00-
316TI0.0820.0450.03116.00-18.0010.00-14.002.00-2.50Ti5*C.min
3170.0820.0450.030.7518.00-20.0011.00-14.003.00-4.00-
317L0.03520.0450.030.7518.00-20.0011.00-15.003.00-4.00-
3210.0820.0450.030.7517.00-19.009.00-13.00-Ti5xC%
321H0.04-0.1020.0450.030.7517.00-19.009.00-13.00-Ti5xC%
3470.0820.0450.030.7517.00-19.009.00-13.00-Na+Ta10xC%
347H0.04-0.1020.0450.030.7517.00-19.009.00-13.00-Na+Ta10xC%
4100.1510.040.03111.50-13.500.75--
410S0.0810.040.03111.50-13.500.6--
S318030.02510.040.03121.0-23.04.5-6.52.5-3.5-