Dellok Yonghui Radiating Pipe Manufacturing Co.,Ltd.
                                                                                                           
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DELLOK EN 10204 TP304 TP316L Stainless Steel Low Fin Tubes 18m Length 12.7-25.4mm OD

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Delivery Time: Ex-work with 5 weeks after order.
Brand: DELLOK
Product Description
DELLOK EN 10204 TP304 TP316L Stainless Steel Low Fin Tubes
High-performance integral low fin tubes manufactured from austenitic stainless steel grades TP304/TP304L and TP316/TP316L, designed for enhanced heat transfer efficiency in demanding industrial applications.
Technical Specifications
  • Standard Length: 18 meters
  • Outer Diameter Range: 12.7 mm to 25.4 mm
  • Fin Height: 1.2 mm to 2.77 mm
  • Fin Thickness: Approximately 0.3 mm
  • Fin Pitch Options: 26, 28, 30, 36, 43 FPI
  • Fin Type: "N" type - fins rolled from tube outer wall
Material Standards
  • ASTM A213/A213M: Seamless Ferritic & Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes
  • ASTM A312/A312M: Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes
  • ASTM A269/A269M: Seamless and Welded Austenitic Stainless Steel Tubing for General Service
Quality Assurance
All integral low fin tubes undergo comprehensive testing including hydrostatic or pneumatic tests, eddy current tests, and MARCO tests to verify design specifications. Certification includes WOLVERINE, HPT, GEWA-K & GEWA-KS standards.
Finned Tube Dimensions
Plain Tube (mm) Fin Pitch (mm) Top Fin Diameter (mm) Root Diameter (mm) Inside Diameter (mm) Ratio Equivalent Diameter (mm)
19×2 0.8 18.8 17 13.4 2.8 17.9
19×2 1 18.8 16.8 13.4 2.5 17.8
19×2 1.25 18.8 16.6 13 2.2 17.8
19×2 1.5 18.8 16.6 13 2 17.7
19×2 2 18.8 16.4 13 1.7 17.5
25×2.5 0.8 24.8 23 18.8 2.8 23.9
25×2.5 1 24.8 22.6 18.8 2.75 23.7
25×2.5 1.25 24.8 22.3 18 2.5 23.6
25×2.5 1.5 24.8 22.3 18 2.2 23.5
25×2.5 2 24.8 22 18 1.8 23.4
25×2.5 2.5 24.8 22 18 1.6 23.3
Customization Options
  • Un-finned section gaps (minimum 5mm) in the middle of core tube
  • Bent configurations with designed bend radius
  • Continental transportation packaging with desiccants
Industrial Applications
  • Heating systems and ventilation systems
  • Refrigeration and climate control systems
  • Mechanical engineering and automotive manufacturing
  • Chemical and petrochemical processing
  • Power plant technology and heat exchanger systems
Product Images
DELLOK stainless steel low fin tube close-up showing fin structure and surface finish Manufacturing process of integral low fin tubes with detailed fin geometry Industrial application of DELLOK low fin tubes in heat exchanger system

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

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