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Contact Person : Jennifer
Phone Number : +86-1381 2020 947
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Continuous helical welded heat exchanger fin fube SA213-TP304H NPS 2'' X SCH80S

Place of Origin China.
Brand Name Reliance
Certification CE,ISO...
Model Number High Frequency Welding Fin Tube
Minimum Order Quantity N/A
Price N/A
Packaging Details (1) Waterproof steel frame bundle package; (2)Steel frame case sealed by plywoods with each end capped.
Delivery Time Ex-work with 1 month on receipt of order.
Payment Terms T/T, L/C
Supply Ability Daily capacity up to 40 tons
Product Details
Fin Tube Type High Frequency Welded Fin Tubes Or HF Welding Fin Tube Fins Type Solid & Serrated
Tube Material Carbon Steel, Stainless Steel...No Limit Tube OD Min. 19mm
Tube Length No Limit Fin Material Carbon Steel, Stainless Steel...No Limit
Fin Thickness Min. 0.8mm Fin Height Max. 32mm
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Product Description

Continuous helical welded heat exchanger fin fube SA213-TP304H NPS 2'' X SCH80S
 

Quick Detail:
 
High Frequency Resistance Welded Helical Steel Fin Tubes is widely used in the recovery of waste heat from boiler flue gas.

 

General HF welding production capacity

General specifications of HF welding fin tubes

Welding Facility: 4 finning machines;
Daily production capacity up to 40 tons;
HFW Fin type: solid plain and serrated.

Tube OD       : 19mm min.
Tube Length  : No limit
Fin Height      : 32 mm max.
Fin Thickness: 0.8mm min
Fin Pitch        :  min. 4 mm for solid fins

                          and 3.3mm for serrated fins.

 
 
General Manufacturing Process:

The fin strip is welded continuously and spirally wound onto a polished bare tube. And the tube and fins are bonded together by using high frequency resistance welding technique.
We produce both solid plain and serrated helical welded steel finned tube. And also, all spiral welding tubes could be bent in the middle or at the end of fin tubes, we call it Hairpin tubes.
 Continuous helical welded heat exchanger fin fube SA213-TP304H NPS 2'' X SCH80S 0Continuous helical welded heat exchanger fin fube SA213-TP304H NPS 2'' X SCH80S 1
 
Basis parameters for helical welded fin tubes:

  1. High frequency welding machine output power supply: 200KW or 300KW
  2. The High Frequency Resistance Welded Spiral Fin Tube quality is assured by hydrostatic or pneumatic tests and tensile tests in order to verify the mechanical bonding between bare tube and fin materials.
  3. Acceptance criteria: INTERNATIONAL STANDARD FOR DIMENSIONS, TOLERANCES, AND TESTS OF HIGH FREQUENCY RESISTANCE WELDED FINS or the delivery conditions (TDC) of clients.
  4. Visual check: un-welded parts of fin, fin damage after fining, copper pollution, tears, wrap etc…
  5. Dimensional check: fin height, fin spacing, fin inclination, fin corrugation, length of finned & un-finned portion etc…
  6. Bending check: ovality, thickness and area reduction.
  7. Coating: outside-Red oxide zinc phosphate primer and inside volatile corrosion inhibitor (VCI) in water soluble tablet form.
  8. Fin end finish: Bevel(30~35 degree)
  9. Delivery condition: Tube ends are square cut, free burrs, internally dried and air blown clean, externally coated with varnish at both ends of helical welded tubes. The desiccants are put into the each package for continental transportation as well.
  10. Documentation shall include QAP, WPS, PQR& WPQ, raw materials mill certificates, inspection and test samples results and warranty certificate of manufacturer.

 
Applications:
 
The High Frequency Resistance Welded Helical Fin Tubes are widely applied in fired heaters, heat exchanger, boilers, economizers, pre-heaters, coolers, heat pipes, heaters etc….
 
 
Specifications:
 
A wide range of fin and tube materials could be combinations are available.
 

Items General Materials Popular Materials
Core Tube Material

Carbon Steel , Alloy Steel, Heat Resistant Steel,Stainless Steel etc.

1. Carbon Steel: A179/A192/SA210/P235GH etc..
2. Stainless Steel: TP304/304L,
TP316/TP316L, A789 S31803/S2205 etc...
3. Alloy Steel: T11/T13
 
 

Fins Material 

 Carbon Steel , Alloy Steel, Heat Resistant Steel,Stainless Steel etc.

1. Carbon Steel
2. Stainless Steel