Dellok Yonghui Radiating Pipe Manufacturing Co.,Ltd.
                                                                                                           
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24 Years
Since 2002
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DELLOK 316 Stainless Steel G Finned Tube for Radiators - 19-51mm OD, 450°C Operating Temperature

Price Negotiable
Price: $10 - 100 /Piece/Pieces
MOQ: 1 Piece
Delivery Time: 1-3 weeks
Brand: Dellok Yonghui
Product Description
Product Overview
DELLOK 316 Stainless Steel G Finned Tube is a high-performance heat transfer component designed for radiator applications. This embedded fin tube features a mechanical bond that ensures excellent thermal performance and structural integrity under demanding operating conditions.
Manufacturing Excellence
DELLOK (YONGHUI Radiating Pipe Manufacturing Co., Ltd.) has been a leading manufacturer since 2002, operating from Nanjing, China. With over 200 employees and 33 technical staff, we maintain 47 fin tube production lines with an annual capacity exceeding 12 million meters. Our partnership with HARBIN AIR CONDITIONING CO., LTD. since 2022 further strengthens our position as China's premier industrial manufacturer.
DELLOK G Finned Tube manufacturing process and product display
G Finned Tube Technology
The G-fin (grooved fin) design creates a permanent mechanical bond between fin and tube, ensuring negligible deterioration even with repeated heat cycling. This advanced finning method is particularly suitable for high-temperature applications up to 450°C, with aluminum or copper fin materials being the most common choices.
Close-up view of G finned tube showing embedded fin structure
Manufacturing Process
Our specialized manufacturing utilizes two non-cutting plates positioned at 90° to the tube axis. The first plate creates the groove for metal spinning, while the second directs the fin ribbon into the groove and sets the fin foot through precise pressure application. Tungsten carbide tooling enables production with austenitic steel and exotic alloy base tubes.
G finned tube manufacturing equipment and tooling setup
Key Advantages
  • Exceptional fin stability and structural integrity
  • Superior heat transfer efficiency and thermal performance
  • High operating temperature capability up to 450°C
  • Constant fin/tube wall contact ensures reliable performance
  • Optimal cost-effectiveness ratio for industrial applications
Industrial application of G finned tubes in radiator systems
Technical Specifications
Parameter Metric Values Imperial Values
Tube Outer Diameter 19-51 mm 3/8"-2"
Tube Wall Thickness 2.11-3.5 mm 0.083"-0.138"
Tube Length ≤18,500 mm ≤60.7 ft
Fin Thickness 0.3-0.5 mm 0.012"-0.02"
Fin Height 10-16 mm 0.394"-0.63"
Fin Pitch 100-433 FPM 3-11 FPI
Fin Type G Embedded Fin
Material Combinations
Fin Materials: Aluminum (1100, 1060, 6063), Copper
Tube Materials: Carbon Steel (A179, A192, SA210 GrA1/C, A106 GrB), Stainless Steel (TP304, 316), Copper (UNS12200, 14200, 70600, CuNi70/30, CuNi90/10), Titanium (B338Gr2)
Operating Parameters
Applied Temperature: Up to 400°C
Service Type: High Temperature Applications
Frequently Asked Questions
Q1: Are you a trading company or manufacturer?
We are a manufacturing factory and accept OEM orders. We welcome visits to our facility for quality inspection.
Q2: Can I request a sample?
Yes, sample orders are welcome for quality testing. Mixed samples are also acceptable.
Q3: What is your production lead time?
Samples typically require 1-3 days, while mass production takes 15-30 days depending on specific requirements.
Q4: What warranty do you provide?
We offer a comprehensive one-year warranty on all products.
Q5: What payment terms do you accept?
We accept Trade Assurance, TT (Telegraphic Transfer), and Western Union payments.

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Dellok Yonghui Radiating Pipe Manufacturing Co.,Ltd.
Location No.18 Tianyue Road,Yanzhou,Jiangsu China
Contact Person Peter Cheng

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