Lord Fin Tube--Studded tubes manufacturer
Studded tubes (or stud-welded tubes) are specialized heat transfer surfaces designed to maximize thermal efficiency in industrial equipment like boilers, heat exchangers, and furnaces.
1. Studded Tubes Definition & Core Applications
Studded tubes (or Pin Pipes) are steel pipes with externally welded studs or protrusions, typically made of carbon steel, stainless steel (AISI 304/410), or specialty alloys (e.g., Inconel, Monel). These studs enhance surface area and functional performance for industrial applications.
Primary Uses
Heat Transfer Enhancement: Optimizes thermal efficiency in boilers, heat exchangers, and furnaces by disrupting laminar flow and increasing turbulence.
Abrasion/Wear Resistance: Protects pipelines handling abrasive materials (e.g., fluidized beds, cement kilns).
High-Temp/Pressure Environments: Ideal for petrochemical, power generation, and shipbuilding industries.
2. Studded Tubes Features & Advantages
Structural Design
Stud Arrangement: Staggered rings or helical patterns tailored to maximize heat transfer or wear resistance.
Dual-Surface Design: Smooth inner bore (minimizes pressure drop) + studded exterior (enhances performance).
Performance Benefits
|
Feature |
Advantage |
|
Heat Transfer |
30–50% higher efficiency vs. bare tubes (studs increase surface area + turbulence). |
|
Abrasion Resistance |
Extends service life in particle-laden flows (e.g., coal-fired boilers). |
|
Anti-Fouling |
Studs reduce sediment buildup, lowering maintenance costs. |
|
Mechanical Strength |
Withstands pressures up to 150 bar and temperatures exceeding 600°C. |
3. Studded Tubes Materials & Manufacturing Process
Material Options
Carbon Steel: Cost-effective for general-purpose use.
Stainless Steel (AISI 304/316): Corrosion-resistant for chemical/petrochemical apps.
Nickel Alloys (Inconel): Extreme heat/corrosion resistance (e.g., sulfuric acid recovery).
Production Techniques
Stud Welding: Automated drawn-arc or resistance welding ensures strong, consistent bonds. Base Tube Fabrication: Seamless or welded tubes (OD: 60.3–219 mm; lengths up to 20 meters).
Quality Control: NDT Testing: X-ray/ultrasonic inspection for weld integrity. Pressure Testing: Validates performance under operational conditions.
4. Studded Pipes Technical Specifications
|
Parameter |
Range/Capability |
Standards Compliance |
|
Tube OD |
60.3–219 mm |
ASTM A213, ASME SA192 |
|
Stud Height |
6–25 mm (customizable) |
ISO 9001 |
|
Pressure Rating |
Up to 150 bar |
PED 2014/68/EU |
|
Temperature |
-50°C to +800°C (material-dependent) |
EN 10204 3.1 Certification |
5. Studded Tubes Industry Applications
Sector-Specific Uses
Power Generation: Boiler superheaters, economizers (coal/gas-fired plants). Waste heat recovery systems (improves energy efficiency by 15–20%).
Oil & Gas: Refinery reheaters, sulfur condensers.
Chemical Processing: Reactors, acid-cooling pipelines (resists H₂SO₄/HCl atmospheres).
Metallurgy: High-temperature flue gas ducts (reduces erosion in sintering plants).
Compatible Equipment Shell-and-tube heat exchangers Fluidized bed reactors Thermal oxidizers
