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熱交換不銹鋼管

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       奧氏體、鐵素體和馬氏體不銹鋼、雙相不銹鋼、鎳合金材質的換熱管,適用于各種類型的熱交換器,如海水冷卻器、冷凝器、蒸發器、加熱器和再加熱器。

       我司換熱器管有無縫(A213)和焊接(A249)兩種類型,可供英制和公制尺寸,從外徑6.35毫米到50.8毫米(1/4"到2"),特殊尺寸也可定做。我們的換熱器管供應的直管長度可達30米,我們也可提供U型管。

Heat exchanger tube in an extensive range of Austenitic,Ferritic and Martensitic stainless steels, duplex stainless steels, nickel alloys,suitable for all types of heat exchangers, such as seawater coolers, condensers, evaporators, heaters and reheaters.

Dextube's heat exchanger tube program includes imperial and metric sizes, from outside diameter 6.35 mm up to 50.8 mm (1/4" to 2"). Special sizes can be made to order. Our heat exchanger tubes are supplied in straight lengths up to 30 meters, or as U-bent tubes.

 

主要材質Grades:

奧氏體Austenitic: 304/L, 316L, 317L, 321, 347, 904L,

馬氏體Martensite: 410,430, 405, 409, 439, 420, 444, 446

雙相鋼Duplex: S31803, S32205, S31500, S31200, S32304, S32750

鎳基合金Nickel Alloy:Alloy 400, Alloy 600, Alloy 625, Alloy 800, Alloy 825, Alloy 20, Alloy 28, Alloy C276;

Other grades can be offered on request.


標準Standards: A213/A269  A249 A789/A790  EN 10216-5 TC1


外徑 Outside diameter range from 6.35-50.8mm


壁厚 Wall thickness range from 0.71-3.81mm


檢驗與測試Inspection & Test:

1. 100%化學成分檢測100% PMI / Chemical analysis tests.

2.100%尺寸和外觀檢測100% Dimension tests & 100% Visual examination

3. 拉伸試驗、翻邊試驗、硬度試驗、壓扁試驗Tension test, flange test, hardness test, flattening test

4. 彎曲前100%渦流試驗或靜水壓試驗,彎曲后100%靜水壓試驗100% Eddy Test or Hydrostatic Test before bending and 100% Hydrostatic test after bending

5. 經客戶同意,檢查彎曲區域及300mm直腿長度的應力釋放熱處理。Checking stress released heat treatment in bending area plus 300mm straight leg length after bending with agreement with clients.

注:所有試驗和檢驗均按標準和試驗結果提供報告。

Notes: all the tests and inspection need to provide with reports according to standard and test results.

 

U 型管U-BENDING / U bend Tubing / U Tube:

U-BENDING / U bend Tubing / U Tube heat exchangers comprise a U shaped tube fixed by flow baffles or tubes supports and placed in shell to control the fluid present in the exterior of the tube assembly. The fluid is guided into the tubes by a head assembly, which is fixed to the shell by bolts.

 

Bending Radius: From 1.5 * O.D (outside diameter) ,When ordering tubes with bending radius less than 1.5*OD, it is necessary to get the agreement with us.

Straight tubes maximum length (before bending): 35000 mm.

Leg length: min 1 meter, max. 16500 mm (for max r=1500mm) 

Note: Other sizes are available upon agreement.

Heat treatment: stress relieved after u-bending (bending area plus 300mm for each leg).

 


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