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DELLOK Solid Stainless Steel Helical ASTM A106 Welded Fin Tubes

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DELLOK Solid Stainless Steel Helical ASTM A106 Welded Fin Tubes
Features Gallery Product Description Request A Quote
Tube OD:: 19mm Min.
Tube Length:: 18 Meters Max.
Fin Height:: 26mm Max.
Fin Thickness:: 0.8mm Min
Fin Pitch:: Min. 4 Mm For Solid Fins & 3.3mm For Serrated Fins.
HFW Fin Type:: Solid Plain And Serrated.
High Light:

A106 Welded Fin Tubes


EN10204 Stainless Steel Welded Pipe


26mm Welded Fin Tubes

Basic Infomation
Place of Origin: China
Brand Name: DELLOK
Certification: CE. ISO,EN10204. 3.1 Cert.
Model Number: HFW
Payment & Shipping Terms
Packaging Details: (1) Waterproof steel frame bundle package;(2)Steel frame case sealed by plywoods with each end capped.
Delivery Time: Ex-work within 1 month on recepit of order.
Payment Terms: L/C, T/T Contact us for details
Supply Ability: 60000 meters month
Product Description

Solid Stainless Steel Helical ASTM A106 Welded Fin Tubes


A106 Gr.B SMLS Carbon Steel Tube , Helical Welded Solid Type Fin Tubes


ASTM A106/A106M : Seamless Stainless Steel Pipe for High-Temperature Service


High Frequency Resistance Welded Helical Steel Fin Tubes is widely used in the recovery of waste heat from boiler flue gas.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. All of them are outside-Red oxide zinc phosphate primer and inside volatile corrosion inhibitor (VCI) in water soluble tablet form. Its suits various area such as 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….

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.

Acceptance Criteria:

Visual check:
Un-welded parts of fin, fin damage after fining, copper pollution, tears, wrap etc…
Dimensional check:
Fin height, fin spacing, fin inclination, fin corrugation, length of finned & un-finned portion etc…
Bending check:
Ovality, thickness and area reduction.
Surface Coating:
outside-Red oxide zinc phosphate primer and inside volatile corrosion inhibitor (VCI) in water soluble tablet form.
Tube End Finish:
Bevel @ (30°~35°)
Bevel Root Size


Product Details


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

Tube details:

Tube OD: 19mm min.

Tube Length: 18 meters max.

Fin Height: 26 mm max.

Fin Thickness: 0.8mm min

Fin Pitch: min. 4 mm for solid fins & 3.3mm for serrated fins.

Production Capacity:

Daily production capacity up to 40 tons;

HFW Fin type:

solid plain and serrated.

Competitive Advantage:

  1. We have more than 10,000 square meters workshop, including 4 ERW high Frequency welding fining lines, daily production capacity around 40 Tons;

  2. Our quality assurance plan for High Frequency Welding Spiral Steel Tubes. (2.1) Raw material control for both plain tubes and fins. (2.2) In process control with reports,as WPS, PQR&WPQ; weld deposition efficiency test before fabrication, Non-destructive test and tensile test etc. (2.3) Final inspection control with reports (Visual and dimensional check etc…).

  3. The High Frequency Resistance Welded Fin Tube is integrally extended for the max surface area to achieve efficiency. The heat transfer ratio of high frequency welding fin tube is about 8~9 times higher than other plain tubes.

  4. This Welded Helical Fin Tubes is a singular integral unit, eliminating heat contact resistance and losses. Generally tube side temperature up to 800 degree for stainess steel fins; Low carbon steels, withstanding up to 475 degree is the most common choice.

Our Service


Inquiry-Professional quotation, or send inquiry item more details, we start contact more details


Confirm the price, lead time, payment term etc


Our sales send the Proforma Invoice with our seal, or you order online to us


Customer make the payment for deposit and send us Bank receipt


Intial Production Stage-Inform the clients that we habe got the payment, and will make the samples according to your request, send you photos or samples to get your approval. After approval, we inform that we will arrange the production & inform the estimated time


Middle Production-send photos to show the production line which you can see you products. Confirm the estimated delivery time again.


End Production-Mass production products photos and samples will send to you for approval. You can also arrange the third party inspection


Clients make payment for balance and ship goods, inform the tracking number and check the status for clients


Order can be say "finish" when you receive the goods and satify with them


Feedback to our about Quality, Service, Market Feedback & Suggestion. And we can do better

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Contact Person : Pax Yang
Tel : +862569521609
Fax : 86-25-6952-5709
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