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Porous coated tube
Oct 17, 2018

Our company works with the German heat transfer technology company to enhance the condensation heat transfer of organic compounds by using high efficiency condensing tubes. In addition to the traditional low finned tube which enlarges the heat transfer area on the surface of the tube, its unique processing technology makes the fin tip form a special three-dimensional structure with rapid drainage function, which is conducive to thinning the condensate film and further improving the condensation heat transfer efficiency. At the same time, the processing technology adopted by this technology, compared with the traditional low finned tube processing stress is small, can effectively extend the service life of heat exchanger tube.


Its applications include refining, chemical, power, refrigeration, air-conditioning and other industries condensing conditions.

Porous coated tube

High efficiency condensing pipe can be made of carbon steel tube, austenitic stainless steel, titanium, copper and copper nickel alloy and other materials.


Corrugated tube enhanced technology is for no-phase and condensing heat transfer. The key of this series is the corrugated or helical shape, as liquid flow through the tube, it could disturb the liquid fluid and break the boundary layer of laminar flow on both outside and inside. The increase of turbulence will improve heat transfer, and the spherical hump will shrink the condensate film on the outer tube surface which will raise the condensation heat transfer coefficient. Also, the increase of turbulence could help avoid dirt deposition on the tube surface, delay equipment scaling.


The main feature of this technology is high heat exchange efficiency, low scaling, and better self thermal compensation. Compare to the traditional plain tube, it also has the advantages as easier to operate and maintain, better energy-saving effect, and it is the energy saving produce which generalized by Ministry of Science and Technology.


Based on the shape of the tube, the corrugated tube could separate as thin-walled corrugated tube, thick-walled corrugated tube and spiral corrugated tube.


Main application is almost including all fields, such as fertilizer, soda ash, oil refining, petrochemical industry, coal chemical industry, thermoelectric and city heat supply.


Porous coated tube has a sintered porous metal layer on the tube surface which significantly increased the vaporization core numbers to enhance boiling heat transfer efficiency.


Main advantage of this technology: high heat transfer coefficient, small heat transfer temperature difference, high critical heat load, rare fouling and high cost-effective.


Main application fields: boiling working condition in oil refining, petrochemical, chemical, air separation, refrigeration, food and pharmaceutical industries.


ASTM A 249/A 249M Specification for Welded Austenitic Steel Boiler, Superheater, Heat-Exchanger, and Condenser tubes

ASTM A269/A269M, ASME SA269/SA269M Specification for Seamless and Welded Austenitic Stainless Steel Tubing for General Service

ASTM A 270 Specification for Seamless and Welded Austenitic and Ferritic/Austenitic Stainless Steel Sanitary Tubing

ASTM A312/A312M, ASME SA312/SA312M Specification for Seamless and Welded Austenitic Stainless Steel Pipes

ASTM A 358/A 358M Specification for Electric-Fusion-Welded Austenitic Chromium-Nickel Alloy Steel Pipe for High-Temperature Service

ASTM A409/SA409 Welded Large Diameter Austenitic Steel Pipe for Corrosive or High Temperature Service

ASTM B515/ASME SB515

ASTM B516, ASME SB516,

ASTM A 554 Specification for Welded Stainless Steel Mechanical Tubing

ASTM A632 Standard Specification for Seamless and Welded Austenitic Stainless Steel Tubing (Small-Diameter) for General Service

ASTM A 688 / SA 688 For Welded feed water heater ‘U’ Tubes

ASTM A731 / A731M Seamless and Welded Ferritic and Martensitic Stainless Steel Pipe

ASTM A 778 Specification for Welded, Unannealed Austenitic Stainless Steel Tubular Products

ASTM A789/A789M, ASME SA789/SA789M Seamless and Welded Ferritic/Austenitic Stainless Steel Tubing for General Service

ASTM A790/A790M, ASME SA790/SA790M Seamless and Welded Ferritic/Austenitic Stainless Steel Pipe


ASTM A 450/A 450M Specificaion for General Requirements for Carbon, Ferritic Alloy, and Austenitic Alloy Steel Tubes

ASTM A530/A530M Standard Specification for General Requirements for Specialized Carbon and Alloy Steel Pipe

ASTM A 999/A 999M Specification for General Requirements for alloy and Stainles Steel Pipe

ASTM A813/A813M Standard Specification for Single- or Double-Welded Austenitic Stainless Steel Pipe

ASTM A814/A814M Standard Specification for Cold-Worked Welded Austenitic Stainless Steel Pipe

ASTM A999/A999M Standard Specification for General Requirements for Alloy and Stainless Steel Pipe

ASTM A1016/A1016M Standard Specification for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes


German-Standards

DIN 2463-1Welded austenitic stainless steel tubes: dimensions and masses per unit length

DIN 17455 Welded circular stainless steel tubes with general quality requirements -Technical delivery conditions

DIN 17457 Welded circular austenitic stainless steel tubes subject to special requirements


EN Standards

EN 10216-5 Welded Stainless Steel Tube

EN 10217-7 Welded steel tubes for pressure purposes - Technical delivery conditions - Part 7: Stainless steel tubes

EN 10296-2 Welded circular steel tubes for mechanical and general engineering purposes - Technical delivery conditions - Part 2: Stainless steel


Australian Standards

AS 1528 Tubes (Stainless Steel) and Tube Fittings for the Food Industry.


JIS-Standards

JIS G 3447 Stainless Steel Sanitary Pipes

G 3448 Light Gauge Stainless Steel Tubes for Ordinary Piping

G 3459 Stainless Steel Pipes

G 3468 Large Diameter Welded Stainless Steel Pipes

G 3463 Stainless Steel Boiler and Heat Exchanger Tubes

G 3446 Stainless Steel Pipes for Machine and Structural Purposes


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