Dellok Yonghui Radiating Pipe Manufacturing Co.,Ltd.
                                                                                                           
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Machinery Refrigeration & Heat Exchange Equipment Refrigeration & Heat Exchange Parts

DELLOK 19mm High Frequency Welded Heat Exchanger Fin Tube - 18m Length, 32mm Fin Height for Industrial Applications

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Delivery Time: Ex-work within 1 month on recepit of order.
Brand: DELLOK
Product Description
DELLOK 19mm Heat Exchanger Fin Tube
High Frequency Resistance Welded Helical Steel Fin Tubes designed for efficient waste heat recovery from boiler flue gas and industrial heating applications.
Product Overview
SS409/SS410 fin materials welded onto TP304/TP304L base tubes, available in solid plain and serrated fin configurations. Manufactured in compliance with ASTM A240/A240M standards for chromium and chromium-nickel stainless steel applications.
Manufacturing Specifications
Production Capacity Technical Specifications
  • 4 finning machines
  • Daily production: 40 tons
  • Fin types: Solid plain and serrated
  • Tube OD: 19mm minimum
  • Tube Length: 18 meters maximum
  • Fin Height: 32mm maximum
  • Fin Thickness: 0.8mm minimum
  • Fin Pitch: 4mm (solid), 3.3mm (serrated)
Manufacturing Process
Continuous spiral welding of fin strips onto polished bare tubes using high frequency resistance welding technique. Available as straight fin tubes or hairpin bent configurations.
Applications
Fired heaters, heat exchangers, boilers, economizers, pre-heaters, coolers, heat pipes, and industrial heating systems.
Material Specifications
Component Available Materials Popular ASTM Materials
Core Tube Carbon Steel, Alloy Steel, Heat Resistant Steel, Stainless Steel 10#,20#,15CrMo,Cr5Mo,Cr9Mo,1Cr18Ni9Ti,0Cr18Ni9,00Cr17Ni14Mo2,SA106B,SA106C,SA192,SA179,SA178,SA214,SA210-A1,SA210-C,TP304/304L/304H,TP409/410,TP316/316L,TP321/321L,TP347H,T11,T22,T91
Fins Carbon Steel, Alloy Steel, Heat Resistant Steel, Stainless Steel Q235-BF,08F,08AL,1Cr18Ni9Ti,0Cr13,1Cr13,0Cr18Ni9,09CrCuSb,CS,A1008-B,SPHC,SPCC,TP304/304L,TP316/316L,TP321/321L
Competitive Advantages
  • 10,000+ sqm facility with 4 ERW high frequency welding lines
  • Comprehensive quality assurance with raw material control, in-process testing, and final inspection
  • Heat transfer ratio 8-9 times higher than plain tubes
  • Integral unit design eliminates heat contact resistance
  • Temperature resistance: 800°C (stainless steel), 475°C (low carbon steel)
Quality Assurance & Services
  • 200KW/300KW high frequency welding power supply
  • Hydrostatic/pneumatic and tensile testing for mechanical bonding verification
  • Comprehensive dimensional and visual inspections
  • Protective coatings and corrosion inhibitors
  • Complete documentation including QAP, WPS, PQR, WPQ, and material certificates
DELLOK 19mm Heat Exchanger Fin Tube manufacturing process
High frequency welded helical fin tube close-up detail
Industrial application of DELLOK heat exchanger fin tubes

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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 Brian Wanqian

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