Oval Stud Welded Elliptical Stud Tubes Manufacturer and Supplier in India
Oval stud welded elliptical stud tubes are resistance welded heat-transfer tubes comprised of an oval base tube and oval studs. They are applied in boiler, waste-heat-recovery and heat-exchanger services where the geometry of the studies and the layout of the tubes is determined by the heat-transfer surface and gas-side flow conditions. Amardeep Steel is capable of providing carbon steel, stainless steel, alloy-steel constructions as per project requirement. That elliptical profile may have less flow disturbance on the gas side than a similar round stud arrangement but the actual pressure drop reduction is dependent on tube geometry, pitch, gas velocity and the design of the exchanger. The stud size, height and tube size can be defined to the application along with the spacing.
Technical Data
Specifications of Oval Stud Welded Elliptical Stud Tubes
| Parameter | Standard / Reference Specification |
|---|---|
|
Base Tube Outside Diameter (OD) |
38 mm to 219 mm |
|
Base Tube Wall Thickness |
4.0 mm to 15.0 mm |
|
Tube Length |
Up to 16,000 mm |
|
Stud Profile / Shape |
Oval / Elliptical cross-section |
|
Stud Diameter / Size |
6 mm to 16 mm (12.7 mm standard reference size) |
|
Stud Height |
10 mm to 45 mm |
|
Stud Spacing / Pitch |
15.875 mm (0.625 inch) reference pitch; final pitch and stud pattern are configured to the approved project drawing. |
|
Base Tube Materials |
• Carbon Steel: ASTM A192, A210, A179 • Stainless Steel: 304/304L, 316/316L, 310S, 321, 410 • Alloy Steel: ASTM A213 T5, T9, T11, T22, P5, P9, P11, P22 • Duplex & Special: Duplex 2205, Super Duplex 2507, Incoloy 800/825 |
|
Welding Process |
Automatic PLC-controlled Resistance (Projection) Welding |
|
Certification & Testing |
EN 10204 3.1 Mill Test Certificate (MTC), NDT (UT/ET/PT), Hydrostatic Testing |
Dimensions of Oval Stud Welded Elliptical Stud Tubes
| Parameter | Details |
|---|---|
|
Tube OD (Outside Diameter) |
38 mm – 219 mm |
|
Tube Wall Thickness |
4 mm – 15 mm |
|
Tube Length |
Up to 16,000 mm (Max) |
|
Studs OD (Outside Diameter) |
6 mm – 16 mm |
|
Studs Height |
10 mm – 45 mm |
Applications and Industrial Uses of Oval Stud Welded Elliptical Stud Tubes
- Ship Boilers
- Waste Heat Recovery Systems
- Industrial Boilers
- Heat Exchangers
- Power Generation Plants
- Petrochemical Plants
- Chemical Processing Plants
- Industrial Furnaces and Heating Systems
Frequently Asked Questions
What are Oval Stud Welded Elliptical Stud Tubes?
Oval Stud Welded Elliptical Stud Tubes are heat-transfer tubes with an elliptical base tube and welded oval studs that increase the heat-transfer surface area.
What are the advantages of Oval Stud Welded Elliptical Stud Tubes?
They can offer a lower gas-side pressure drop and compact heat-transfer arrangement in suitable tube-bank designs; the actual performance depends on tube geometry and operating conditions.
How are Oval Stud Welded Elliptical Stud Tubes manufactured?
They are manufactured by forming elliptical base tubes and attaching studs to the outer surface using automatic resistance (projection) welding.
What materials are used for Oval Stud Welded Elliptical Stud Tubes?
Common materials include carbon steel, stainless steel, alloy steel, duplex stainless steel, and nickel alloys.
Are Oval Stud Welded Elliptical Stud Tubes suitable for high-temperature applications?
Yes, they are suitable for high-temperature applications such as boilers, heat exchangers, furnaces, and waste heat recovery systems, depending on the selected material grade.
Can Oval Stud Welded Elliptical Stud Tubes be customized?
Yes, they can be customized in tube dimensions, wall thickness, length, stud size, height, spacing, and material grade according to project requirements.
