Economiser Tubes Manufacturer & Supplier in India
The Economiser Tubes are heat recovery elements in industrial and utility boilers to pre-heat the boiler feed water before feeding it into the steam system with heat from the flue gases. The sensible heat of the flue gases is transferred to incoming boiler feedwater, improving energy recovery and reducing the fuel required to raise the water to the required steam-system condition. They come in seamless and welded design, and are used in carbon steel, alloy steel and stainless steel depending on the operating temperature and pressure. Various heat transfer applications require the use of either plain or finned economiser tubes. Typical applications include power plants, process boilers, waste heat recovery and steam generation units. Tube can be produced to applicable ASME, ASTM and EN standards. Amardeep Steel are manufacturers and suppliers of economiser tubes in India.
Technical Data
Specifications of Economiser Tubes
| Technical Parameter | Specification & Supply Capability |
|---|---|
Primary Base Tube Standards |
Carbon Steel: ASME SA178 (ERW), ASME SA192 (Seamless), ASME SA210 Gr. A1 / C (Seamless) Alloy Steel: ASME SA213 Gr. T11, T22, T5, T9, T91 Stainless Steel: ASME SA213 / ASTM A312 TP304/304L, TP316/316L, TP321 |
Outside Diameter (OD) Range |
Standard Sizes: 31.8 mm to 63.5 mm (1¼" to 2½" OD) Custom Range: 25.4 mm up to 114.3 mm (1.0" to 4.5" OD) |
Wall Thickness (WT) Range |
Standard Thickness: 2.9 mm to 6.3 mm (0.115" to 0.250") Heavy-Wall Range: Up to 12.7 mm for high-pressure utility boilers |
Surface Construction Options |
Bare / Plain Tubes: Smooth outer surface for high-fouling, ash-laden coal/biomass gas streams. Finned Tubes: High-Frequency Resistance Welded or Extruded extended surfaces for clean gas service. |
Length Capabilities |
Straight lengths up to 20,000 mm (20 meters) or custom-fabricated hairpins/coils |
Delivery Condition |
Cold drawn, hot finished, normalized & tempered, or solution annealed per material specification |
Inspection & Certification |
100% NDT (Eddy Current or Hydrostatic), Dimensional Layout, MTC per EN 10204 3.1 / 3.2 |
Chemical Compositions of Economiser Tubes
| Material Standard & Grade | Carbon (C) | Manganese (Mn) | Silicon (Si) | Phosphorus (P) Max | Sulfur (S) Max | Chromium (Cr) | Molybdenum (Mo) | Other Elements |
|---|---|---|---|---|---|---|---|---|
ASME SA192 (Seamless CS) |
0.06 – 0.18 |
0.27 – 0.63 |
0.25 max |
0.035 |
0.035 |
— |
— |
— |
ASME SA210 Grade A1 (Medium-C CS) |
0.27 max |
0.93 max |
0.10 min |
0.035 |
0.035 |
— |
— |
— |
ASME SA210 Grade C (Medium-C CS) |
0.35 max |
0.29 – 1.06 |
0.10 min |
0.035 |
0.035 |
— |
— |
— |
ASME SA178 Grade A (ERW CS) |
0.06 – 0.18 |
0.27 – 0.63 |
— |
0.035 |
0.035 |
— |
— |
— |
ASME SA213 T11 (1.25Cr-0.5Mo Alloy) |
0.05 – 0.15 |
0.30 – 0.60 |
0.50 – 1.00 |
0.025 |
0.025 |
1.00 – 1.50 |
0.44 – 0.65 |
— |
ASME SA213 T22 (2.25Cr-1Mo Alloy) |
0.05 – 0.15 |
0.30 – 0.60 |
0.50 max |
0.025 |
0.025 |
1.90 – 2.60 |
0.87 – 1.13 |
— |
ASME SA213 TP304L (Stainless Steel) |
0.035 max |
2.00 max |
1.00 max |
0.045 |
0.030 |
18.0 – 20.0 |
— |
Ni: 8.0 – 12.0 |
ASME SA213 TP316L (Stainless Steel) |
0.035 max |
2.00 max |
1.00 max |
0.045 |
0.030 |
16.0 – 18.0 |
2.00 – 3.00 |
Ni: 10.0 – 14.0 |
Economiser Tubes Mechanical & Physical Properties
| Material Standard & Grade | Tensile Strength, Min (MPa / ksi) | Yield Strength, Min (MPa / ksi) | Elongation in 2" (50mm), Min (%) | Max Hardness (Rockwell / Brinell) |
|---|---|---|---|---|
ASME SA192 |
325 MPa / 47 ksi |
180 MPa / 26 ksi |
35% |
77 HRB / 137 HB |
ASME SA210 Grade A1 |
415 MPa / 60 ksi |
255 MPa / 37 ksi |
30% |
79 HRB / 143 HB |
ASME SA210 Grade C |
485 MPa / 70 ksi |
275 MPa / 40 ksi |
30% |
89 HRB / 179 HB |
ASME SA178 Grade A |
315 MPa / 47 ksi |
180 MPa / 26 ksi |
35% |
— |
ASME SA213 T11 |
415 MPa / 60 ksi |
205 MPa / 30 ksi |
30% |
85 HRB / 163 HB |
ASME SA213 T22 |
415 MPa / 60 ksi |
205 MPa / 30 ksi |
30% |
85 HRB / 163 HB |
ASME SA213 TP304L |
485 MPa / 70 ksi |
170 MPa / 25 ksi |
35% |
90 HRB / 192 HB |
ASME SA213 TP316L |
485 MPa / 70 ksi |
170 MPa / 25 ksi |
35% |
90 HRB / 192 HB |
Different Types of Economiser Tubes
Welded Economiser Tubes
Stainless Steel Economiser Tubes
Seamless Economiser Tubes
High-Frequency Welded
Economiser Tube
Finned Economiser Tubes
Carbon Steel Economiser Tubes
Bare / Plain Economiser
Tubes
Alloy Steel Economiser Tubes
Applications and Industrial Uses of Economiser Tubes
- Thermal Power Plants
- Industrial Boilers
- Utility Boilers
- Waste Heat Recovery Systems
- Steam Generation Plants
- Petrochemical Plants
- Chemical Processing Plants
- Sugar and Distillery Plants
Frequently Asked Questions
What are Economiser Tubes?
Economiser Tubes are heat-transfer tubes installed in boilers to recover heat from flue gases and preheat boiler feedwater before it enters the steam system.
How do Economiser Tubes work?
They transfer heat from hot exhaust gases to incoming feedwater, increasing water temperature and reducing the fuel required for steam generation.
Are Economiser Tubes suitable for high-temperature applications?
Yes, Economiser Tubes are suitable for high-temperature boiler and heat-recovery applications when the appropriate material grade is selected.
What is the operating temperature of Economiser Tubes?
The operating temperature of Economiser Tubes depends on the economiser design, material grade, operating pressure, and gas-side conditions. The approved project design temperature should be used to determine the suitable operating range rather than relying on a universal temperature limit.
What is the difference between plain and finned Economiser Tubes?
Plain tubes have a smooth surface, while finned tubes have extended surfaces that provide greater heat-transfer area and can improve heat recovery.
Are Economiser Tubes available in seamless and welded construction?
Yes, Economiser Tubes are available in seamless and welded constructions, depending on pressure, temperature, material, and application requirements.
