DMG can supply heat exchanger tube and U tube in material of Alloy Steel, CuNi Alloy Titanium and Titanium Alloy.
Those material can be used for all type of heat exchanger, such as seawater cooler, condenser, evaporator, heater and reheater.
Donghao Metal also can supply U Bend Tube with wide size range Alloy Steel, CuNi Alloy and Titanium Alloy.
Alloy Steel -- A179, A192, Gr.A, Gr.C, T5, T9, T11, T12, T21, T22, Gr.3, Gr.6, Gr.8, P5, P9, P11, P12, P21, P22.
CuNi Alloy -- C70600, C71500, C71640, C44300, C26000, C11000, C12200.
Titanium Alloy -- Gr.1, Gr.2, Gr.3, Gr.7, Gr.9, Gr.12.

Main Application

• Gas Processing
• Flue Gas Cleaning
• Hydrometallurgy
• Air Separation
• Marnine
• Power Station
• Oil Refining
• Seawater Cooler
• Petrochemicals
• Chemicals
• Salt Evaporation

U Bend Tube

• Min Radius: 20mm
• Max Radius: 1200mm
• Tolerance: Diameter, Wall Thickness, Bending Part
• Acc to ASTM A556 or customer's request

Test

• 100% Eddy Test or Hydrostatic Test, UT Test, ASTM A262.E,  NACE MR.01.75/77
• Heat Treatment
• Acc to related Spec & Standard,  Stress Releas on U Bend part is avaliable

Low Fin Tube

Outside Diamete: 15mm-76mm
Wall Thickness: 1.5mm - 4mm
FPI:  11-55 per inch
Inner Groove:  0-45 unit
Helix Angle Degree: as Specified
Fin Height:  0.5mm-2mm

Knurled Tube

Outside Diamete: 15mm-76mm
Wall Thickness: 1.5mm - 2mm
FPI:  19-50 per inch
Inner Groove:  28-45 unit
Helix Angle Degree: as Specified
Fin Height:  0.5mm-1mm

Benefits of Fin Tube

2.5 to 5 times the external surface area of bare tube
Reduced capital cost for new equipment
Reduced retrofitting cost for existing equipment
Space, weight & structural savings
More materials and alloys to select
Reduced maintenance and life cycly cost

Bimetallic Fin Tube

Extruded fins, Helically-wound fins G and L, ERW Fins, both solid fins, serrated fins
Bonding styples: Extruded Fin Tube, Tension Sprial Fin Tube, Welded Fin Tube
Material: Aluminium, Copper, Brass, Copper Nickel Alloy, Carbon Steel, Alloy Steel, Stainless Steel
FPI: On Request
Size: On Request

Application

Aftercoolers, Air Coolers, Air Heaters, Charge Air Chillers, Condenser, Convection Heater
Electric Heater, Evaporator, Fluid Cooler, Gas Cooler, Heat Piping, Hydrogen Cooler
Industrial Tumble Dryer, Intercooler, Immersion Heater, Oil Cooler, Radiator, Refrigeration
Solvent Recover and Stream to Air Heat Exchanger

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