Name: Spiral Welded Finned Tubes with A106 Base Pipe CS Fins for Heat Exchangers
Brand: Yuhong Group Co.,Ltd
SKU: HFW FIN TUBE
Price: 100,000.00 USD
Availability: InStock

Yuhong Holding Group Co.,LTD

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Spiral Welded Finned Tubes with A106 Base Pipe CS Fins for Heat Exchangers

Product Details:

Place of Origin:	CHINA
Brand Name:	YUHONG
Certification:	ABS, GL, DNV, NK, PED, AD2000, GOST9941-81, CCS, ISO 9001-2008
Model Number:	HFW FIN TUBE

Payment & Shipping Terms:

Minimum Order Quantity:	10PCS
Price:	Negotiable
Packaging Details:	IRON FRAME WOODEN CASE
Delivery Time:	Depends on quantity
Payment Terms:	L/C,T/T
Supply Ability:	1000 tons per month

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Detailed Product Description

Base Tube Material Standard:

ASTM A106 Gr.B Seamless

Fin Attachment Method:

High-Frequency Welded (HFW)

Max Operating Temperature:

400°C

Fin Density Range:

150-250 Fins Per Meter

Highlight:

Spiral welded finned tubes for heat exchangers

A106 carbon steel finned tubes

CS fin tubes with spiral weld

High-Frequency Welded Finned Tubes: ASTM A106 Carbon Steel Base Tube + Carbon Steel (CS) Fins

1. Product Overview

High-frequency welded (HFW) finned tubes combine ASTM A106 Gr.B seamless carbon steel

base tubes with carbon steel fins using advanced solid-state welding technology. These tubes

deliver 8-10x higher heat transfer efficiency versus bare pipes, ideal for heat recovery systems,

boilers, and process heaters operating at ≤400°C.

2. Fin Tube Structure & Manufacturing Process

Component	Material	Key Process
Base Tube	ASTM A106 Gr.B	Seamless cold-drawn, OD 25.4-114.3mm
Fins	Carbon Steel (CS)	High-frequency welding (2,000 Hz), no filler
Bond Quality	Metallurgical fusion	100% ultrasonic tested, shear strength ≥35MPa

3. Chemical Composition (ASTM Standards)

Base Tube (A106 Gr.B):

Element	C	Mn	P (max)	S (max)	Si
%	≤0.30	0.29-1.06	0.035	0.035	≥0.10

Fins (Carbon Steel SPHC):

Element	C (max)	Mn (max)	P (max)	S (max)	Al (min)
%	0.12	0.50	0.040	0.040	0.020

4. Critical Dimensions & Tolerances

Parameter	Range/Tolerance	Standard
Base Tube OD	25.4 - 219 mm (±0.15mm)	ASTM A106
Fin Height (H)	5 - 30 mm (±0.5mm)	HEI Standards
Fin Thickness (T)	0.8 - 3.0 mm (±0.1mm)	Custom
Fin Pitch	4-25 (±0.2)	ASME B36.10M
Max Length	24 meters (straightness ≤1mm/m)	Custom

5. Performance Advantages

✅ Heat Transfer Coefficient: 45-65 W/m²K (vs. 5-8 W/m²K for bare tubes)

✅ Corrosion Resistance: Zinc/aluminized coating optional for acidic environments

✅ Pressure Rating: Up to 15 MPa at 350°C (ASME B31.1 compliant)

✅ Thermal Fatigue Life: >10,000 cycles (per ASTM E606)

6. Application-Specific Solutions

Industry	Use Case	Tube Configuration Example
Power Plants	Economizers, Air Preheaters	OD 50.8mm + 16mm fins @ 197 FPM
Petrochemical	Process Gas Heaters, Reactors	OD 76.2mm + 19mm fins @ 230 FPM
HVAC	Thermal Fluid Heaters, Dehumidifiers	OD 38.1mm + 12.7mm fins @ 180 FPM
Waste Heat Recovery	Exhaust Gas Boilers (≤550°C)	Aluminized coating + 25.4mm fins