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Strips, Sheets, Rods, Tubes, Billets, wires in all Brasses, Copper, Aluminum, Cupro-nickel, Nickel silver








We have specialization in tubing for equipment like

- Heat Exchanger
- Heating Elements
- Surface Condensers
- Evaporators
- Digesters
- Instrumentation and Fluid Pipings.


SizeRange

    6.0 mm OD - 273.05 mm OD

Thickness

    0.6 mm - 10 mm

Grades

    AISI-304, 304L, 316, 316L, 316Ti, 321, 347 and its Equivalents in DIN, NFA, JIS etc.

Standards

    Conforming to International Specifications of ASTM A-213, A-249, A-269, A-312, A-358, A-688 and its     equivalents in ASME, DIN, NFA, JIS etc.

 


Stainless Steel Tube Manufacturing Program


Wall thick
ness in mm.

0.5

0.6

0.7

0.8

1.0

1.2

1.6

2.0

2.6

3.0

3.2

3.6

O.D.
in mm.

Weight in kg/meter

6.0

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

0.119

0.141

0.163

0.184

0.225

0.264

0.336

-

-

-

-

-

12.7

0.153

0.182

0.210

0.238

0.293

0.345

0.444

-

-

-

-

-

14.0

0.169

0.201

0.233

0.264

0.325

0.384

0.496

-

-

-

-

-

15.87

0.192

0.229

0.266

0.301

0.372

0.440

0.571

0.694

-

-

-

-

19.0

0.231

0.276

0.320

0.364

0.450

0.534

0.696

0.850

1.066

1.200

1.264

-

25.0

0.306

0.366

0.425

0.484

0.600

0.714

0.936

1.150

1.456

1.650

1.744

1.926

25.4

0.311

0.372

0.432

0.492

0.610

0.726

0.952

1.170

1.482

1.680

1.776

1.962

31.8

-

-

-

-

-

0.918

1.208

1.490

1.898

2.160

2.288

2.538

38.0

-

-

-

-

-

1.104

1.456

1.800

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

2.440

3,133

3.585

3.808

4.248

63.5

-

-

-

-

-

-

2.476

3.075

3.959

4.538

4,824

5.391

76.1

-

-

-

-

-

-

2.980

3.705

4.778

5.483

5.832

6.525

101.6

-

-

-

-

-

-

4.000

4.980

6.435

7.395

7,872

8.820



  • 'U' bending is done by cold working process.

  • U' bending is done to the required radius as per customer drawings.

  • The bend portion and six inch leg is stress relieved by resistance heating.

  • Inert gas (Argon) is passed through it at the required flow rate to avoid oxidation in ID.

  • The radius is checked for its OD and wall thinning with the recommended specification. 

  • The physical properties and microstructure is checked at three different position. 

  • Visual inspection for waviness and cracks is done with Dye Penetrant Test.

  • Each tube is then hydro tested at the recommended pressure to check for leakage.

  • Cotton ball test is done to check the ID cleanliness of the tube. 

  • Thereafter pickled, dried, marked and packed.
  • All procedure is strictly followed as per TEMA "C" and ASTM A-688.

  • We also make tubes up to 22 meter long.

  •  





  • Bead removal is done as per the requirement of standard specifications. 

  • Bead is cold worked and brought in level with the base metal. 

  • Bead rolling is made in-line before heat treatment on tube mill.

  • Weld structure will thereby recrystallise & homogenize faster in annealing process.

  • Which improves corrosion resistance. 

  • Which improves easy expansion in tube sheets and orbital welding.

  • Which improves easy flow and easier cleaning and less scale deposits.