3.5mm Welded Fin Tubes

3.5mm Welded Fin Tubes

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

Description

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ASTM A210 / A210M : Seamless Medium-Carbon Steel Boiler and Superheater Tubes

Description:

Square or Rectangular Fins are welded on two steel base tubes. We call it Double H (HH) fin type. The surface of the fin is outside-red oxide zinc phosphate primer and inside volatile corrosion inhibitor (VCI) in water soluble tablet form. And all of them are 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. The delivery condition of this fin are ends square cut, free burrs, internally dried and air blown clean, externally coated with varnish at both ends of Square or Rectangualr Fin Tube. Besides, we provide additional services such as Tube swaging, elbows, bends (90° / 180° or as per client's design).

Acceptance Criteria

Approved drawing and the delivery conditions (TDC) of clients.

Applications:

1. Economizers ,

2. Heat exchangers

3. Marine boilers

Specifications:

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.