The Tubes SBU of Tata Steel caters to the requirements of the Boiler Industry through its 2inch, 3inch and 4inch Precision Tube Mills. The state of art 4 inch mill supplied by OTO Mills, Italy and a fully automated draw bench supplied by BULTMANN, Germany, enable the supply of an extensive range of boiler and heat exchanger tubes.
Strength of Tata Precision Tubes
- Weld quality
- In house raw material with typical high fatigue strength properties
- High strength tubes with high ductility
- ERW / CEW Tubes with low tolerances on OD and thickness
- Recognized as “Self Certified Boiler Tube and Pipe Manufacturer”
- In house R&D integrated with resources across the Tata Steel Group
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Applications
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Attributes
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Benefits of using Tata make welded ERW / CEW Boiler Pipes over Seamless Pipes
- Lower delivery lead time – gets your project on track faster
- All mechanical and chemical properties equivalent to ASTM A106 Grade B
- Greater customization options in terms of OD and Thickness
- Excellent dimensional tolerances
- Hydraulic testing at 2500 psi / 2800 psi in line with ASTM A106 Grade B
| Length |
Typical commercial lengths between 4 to 8 meters. Customized lengths available on request. |
| Straightness | 1 in 600 in case of ERW/CEW |
| End Finish | Plain end, mill finish. |
| Test Certificate | IBR Test Certificate/Works Test Certificate. |
| Packing |
Tubes supplied in bundles with metallic straps and stickers with product details for easy identification. Need based packing requirements.provided on request. |
| Weld Test |
Hydraulic testing and non –destructive testing according to specifications and mutual agreement. |
Extracts from BS: 3059-1987 1990
| Specification | Grade |
Rm N/mn2 |
Re N/mn2 |
A% |
Drift Expansion Test increase in D as % |
Chemical Composition
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Tolerance
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| d/D as Ratio | C % | Si % | Mn % | P & S % | |||||||||||||
| >0.6 | Outside Diameter | Thickness | |||||||||||||||
| Min. | Max. | Min. | Min. | <0.6 | <0.8 | >0.8 | Min | Max. | Min | Max. | Min | Max. | |||||
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BS: 3059 Part 1/1987 |
Steel 320 |
320 | 480 | 195 | 25 | - | 0.16 | - | 0.35 | 0.30 | 0.70 | - |
ERW +/- 0.75% with a minimum of +/- 0.30 mm CEW +/- 0.5% with a minimum of +/- 10mm |
U.T.I 3.2mm +/- 10% and over 3.2mm +/- 7.5% | |||
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BS: 3059 Part 2/1990 |
Steel 360 |
360 | 500 | 235 | 24 | 12 | 15 | 19 | - | 0.17 | 0.10 | 0.35 | 0.40 | 0.80 | .035 | ERW same as Part 1 for ERW 2 Class 2 CEW same as Part 1 of 1987 | +/- 10% (excluding) welding area Same as Part 1 of 1987 |
Rm: Tensile Strength A: Elongation d: Inside diameter Re: Yield stress D: Outside diameter t: Wall thickness
Other available specifications/grades:
* Heat exchanger tubes as per SA 214 Grade A, ASTM A 178 Grade A & Grade C
* Airheater tubes as per BS 6323 and Corten Airheater tubes as per ASTM A 423 Grade 1
* ERW Boiler Pipes as per ASTM A 53 with IBR TC meeting properties of SA 106 Grade B for header pipe application
