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Phone Number : +86-1381 2020 947
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SA210 Gr. A1 Seamless Carbon Steel Rectangular Double H welding Fin Tube for Economizer

Place of Origin China.Imported materials are available
Brand Name Reliance
Certification CE,ISO...
Model Number HH FIN
Minimum Order Quantity N/A
Price N/A
Packaging Details (1) Waterproof bundle package for short distance tansportation; (2) Steel frame case sealed by plywoods with each end capped.
Delivery Time Normally Ex-work with 1 month
Payment Terms T/T, L/C
Supply Ability Daily capacity up to 20 Tons

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Product Details
Company Type Manufacturer,Importer & Exporter Fin Tube Type HH Fin Tube Or Double"H" Fin Tube
Fins Type Square & Rectangular Tube Nos 2 Pieces
Proce DC ERW Tube Material Carbon Steel, Stainless Steel, Alloy Steel Etc..
Fin Material Carbon Steel, Stainless Steel, Alloy Steel Etc.. Tube Length No Limit
Fin Density Min. 10mm Surface Treament Varnish /red Or Black Painting
High Light

Finned Tubing


Heat Exchanger Fin Tube

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Product Description

SA210 Gr. A1 Seamless Carbon Steel , Rectangular  'Double H' welding Fin Tube for Economizers



More Tube Materials
ASTM A106 / 106M : Seamless Carbon Steel Pipe for High-Temperature Service 
ASTM A179 / A179M : Seamless Cold-Drawn Low-Carbon Steel Heat-Exchanger and Condenser Tubes
ASTM A192 / A192M : Seamless Carbon Steel Boiler Tubes for High-Pressure Service
ASTM A210 / A210M : Seamless Medium-Carbon Steel Boiler and Superheater Tubes


General fin tube production capacity General specfications of HH(Double H) fin tube

Production Facility: 6 finning machines;

Daily capacity up to 20 tons;

Tube OD: 51 mm max.

Tube Length: 18 meters max.

Fin Thickness: 1.5mm ~3.5mm

Fin Pitch: 10mm Min.


Manufacturing process

Square or Rectangular Fins are welded on two steel base tubes. We call it Double H (HH) fin type.


Manufacturing Process
Square or Rectangular H Fins are welded on a steel base tube. We call it H Fin Type Tubing.

Acceptance Criteria
Approved drawing and the delivery conditions (TDC) of clients.
Additional Services
Tube swaging, elbows, bends (90° / 180° or as per client's design).
 SA210 Gr. A1 Seamless Carbon Steel Rectangular  Double H welding Fin Tube for Economizer 0
Quality Tests
The Square or Rectangualr H Finned Tube quality is assured by hydrostatic or pneumatic tests, eddy current tests and tensile tests in order to verify the mechanical bonding between inner tubes and outer fins.
Surface Coating
Outside-Red oxide zinc phosphate primer and inside volatile corrosion inhibitor (VCI) in water soluble tablet form.
Delivery Condition: Tube ends are square cut, free burrs, internally dried and air blown clean, externally coated with varnish at both ends of Square or Rectangualr Fin Tube.

  1. Economizers ,
  2. Heat exchangers
  3. Marine boilers


  1. Economizers
  2. Boilers
  3. Heat exchangers




Items General Materials Popular ASTM /ASME Materials
Core Tube Material

 Carbon Steel 
 Alloy Steel
 Heat  Resistant Steel,
 Stainless Steel

1. Carbon Steel: A106 / A179 /A192 / A210 etc...
2. Stainless Steel: TP304/304L,TP316/TP316L, TP347 etc...
3. Alloy Steel: P5,T5,P9,T9,T11,T22


 Carbon Steel 
 Stainless Steel

1. Carbon Steel 
2. Stainless Steel: 
     TP409/410,TP304/304L,TP316/TP316L etc...



Why we choose HH welding fin tube: High efficiency, minimum power loss, easy cleaning.

Descriptions of HH Fin Tube

Popular Specifications we make

Tube OD(mm)

   25mm to 51mm

Tube Wall thickness(mm)

   2.5mm Min.

Tube length(mm)

   18000mm Max.

Fin thickness(mm)

   1.5mm to 3.5mm

Fin pitch(mm)

   10mm Min.

Please email us for more information.


SA210 Gr. A1 Seamless Carbon Steel Rectangular  Double H welding Fin Tube for Economizer 1

Competitive Advantage:

  1. Shanghai Port is our nearest seaport and airport, less than 2 hours’ drive away from our workshop, convenient transportation.
  2. The Square or Rectangular HH Fin Tubes are the preferred tube choice for high pressure boilers.
  3. Fins can be manufactured by stamping process in almost any shape and size.
  4. In-line fin and tube spacing allows for cleaning with excellent choice in sooting or fouling atmospheres.
  5. Fin height and spacing are limited only by heat transfer considerations.
  6. Fins and tubing can be similar or dissimilar metals.