ASTM B163 Incoloy 825+ AL Finned Tube Extruded Type For Boiler And
Heat Exchanger
Yuhong Group has been operating stainless steel/duplex/nickel
seamless pipes for more than 10 years, with annual sales of more
than 80,000 tons of stainless steel/duplex/nickel seamless pipes.
Our clients have covered more than 45 countries. Our stainless
steel seamless pipes are widely used in mining, energy,
petrochemical, chemical, food mills, paper mills, gas and fluid
industries and more.
Extruded bimetal finned tube
The finned tube is composed of iron-aluminum or copper-aluminum
tube rolled fins, which have tight feather shape, small thermal
resistance, good heat transfer performance, high strength, small
flow loss, strong corrosion resistance, not easy to deform, cold
and heat. Long service life under conditions, etc.
The fins are smooth and burr-free as a whole and easy to clean.
When the air-conditioning project is heating and cold, it is easy
to make the surface of the fins wet and cold. In the case of heat
exchange such as drying and heating, the surface is anodized, with
beautiful color and luster, which can effectively prevent surface
corrosion.
Rolled finned tubes are integrally rolled from aluminum tubes, and
have the characteristics of no contact thermal resistance, high
strength, thermal shock and mechanical shock resistance, good
thermal performance, and a considerable expansion heat transfer
surface. This finned tube heat exchanger is in front of the tube or
around the plate.
Extruded finned tubes are bimetallic tubes whose outer aluminium surface is finned by cold
plastic deformation.
ASME B163 covers nickel and nickel alloy seamless tubes for
condenser and heat exchanger services. This includes outer diameter
and average wall, or outer diameter and minimum wall tube. Tubing
shall be supplied in the alloys and conditions specified in this
specification. Materials shall meet the specified compositional
limits for nickel, copper, molybdenum, iron, manganese, carbon,
silicon, chromium, aluminum, titanium, phosphorous, cerium,
zirconium, yttrium, boron, cobalt, niobium, tungsten, and nitrogen.
The tensile strength, yield strength, elongation, and Rockwell
hardness of the material shall meet the mechanical property
requirements specified in this specification. Test methods such as
chemical analysis, tension, rounding procedures, Rockwell hardness,
grain size and hardness conversion should be performed.
SB163 SB423 N08825 Nickel Alloy Seamless Pipe is a
nickel-iron-chromium alloy with added molybdenum and copper. The
chemical composition of this nickel steel alloy is designed to
provide superior resistance to many corrosive environments. It is
similar to Alloy 800 but has improved water corrosion resistance.
It has excellent resistance to reducing and oxidizing acids, stress
corrosion cracking, and localized corrosion such as pitting and
crevice corrosion. Alloy 825 Incoloy 825 is particularly resistant
to sulfuric and phosphoric acid. This nickel steel alloy is used in
chemical processing, pollution control equipment, oil and gas well
piping, nuclear fuel reprocessing, acid production and pickling
equipment.
NO8825 Chemical Composion:
| Element | % |
| Nickel | 38.0-46.0 |
| Chromium | 19.5-23.5 |
| Molybdenum | 2.5-3.5 |
| Copper | 1.5-3.0 |
| Titanium | 0.6-1.2 |
| Iron | 22.0 min (~33%) |
| Carbon | 0.05 max |
| Manganese | 1.0 max |
| Sulphur | 0.03 max |
| Silicon | 0.5 max |
| Aluminium | 0.2 max |
NO8825 Physical Properties:
| Density / Specific Gravity | 8.1 kg/m³ 0.30 lb/in³ |
| Melting point | 1370-1400℃ |
NO8825 Mechanical Properties:
| Alloy state | Tensile strength | Yield strength | Elongation | Brinell hardness |
| Rm N/mm² | R P0. 2N/mm² | A 5 % | HRB Max |
| N08825 | 517 | 172 | 30 | 200 |
| Hot Finished |
| N08825 | 586 | 241 | 30 | 200 |
Cold Finished
|
Technical details/base tube details/Fin details
Pipe Diameter: Min. OD 20mm to Max. OD 219mm.
Tube Thickness: Min. 2mm to 16mm
Pipe material: stainless steel, alloy steel, carbon steel, Corten
steel, duplex steel, super duplex steel, Inconel, high chromium
high nickel and some materials such as Incolloy, CK 20 material.
Fin detail
Fin Thickness: Min. 0.8 mm to max. 4 mm
Fin Height: 0.25" (6.35 mm) minimum to 1.5" (38 mm) maximum
Fin Density: Minimum 43 fins per meter, maximum. 287 fins per meter
Materials: Carbon Steel, Stainless Steel, Alloy Steel, Weathering
Steel, Duplex Steel and Incolloy.
If you need a quick quote, please send as follows:
1. The number of pieces,
2. Base pipe: (1) diameter, (2) thickness, (3) length and (4)
material specification.
3. Fins: (1) material specification, (2) type (solid or serrated),
(3) height, (4) thickness, (5) pitch, (5) fin length and (6)
finless section .
If necessary, weld preparation details.
4. Desired delivery date.
