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DELLOK Stainless Steel Heat Exchanger U Tube ASTM A213 TP304 / 304L TP316 / 316L

ASTM A213 TP304 / 304L , TP316 / 316L , Stainless
  • Mobile:+8613761381662
  • Fax:+86 25 69755709
  • Email:commercial@bestfintube.com
Description

ASTM A213 TP304 / 304L , TP316 / 316L , Stainless Steel U Bent Heat Exchangers Tube

 

ASTM A213/A213M : Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes

 

U-Bend Tubes are accordance with the Following Standards:

1.    ASTM A688/ASME SA688

2.    ASTM A803/ASME SA803

3.    ASTM A556/ASME SA556

 

Steel Grade:

Ferrite

Austenite

Duplex

Super Duplex

Ni-Alloys

Titanium

TP410

TP405

S44400

S44660

TP430

TP304/304L

TP316/316L

TP316Ti

TP317/317L

TP321

TP347

S31803

S32205

S32304

S32750

S32760

N06600

N08020

N00880

N08825

N08904

Gr.2

 

 

 

 

 

 

 

 

 Straight Tubes Maximum Length:

(Before Bending): 35000 mm.

 

Unit  Leg Length

Min 1 Meter, Max. 16500 mm (For Max R=1500mm)

 

Heat Treatment

Stress Relieved After U-Bending (Bending Area Plus 300MM For Each Leg).

 

Hydrostatic Test After U Bending

Maximum Test Pressure 600 Bar, Holding time: 10 Sec. 

Medium: Dematerialized Water. 

Compressed Air Cleaning After Hydro-Test.

 

Packaging 

In Strong Transport-Worthy Pre-fumigated wooden boxes of corresponding dimensions for 

each tube Length, Radius, Diameter, According To PO requirements as well as wrapped In polyethylene 

films With soft plastic caps on both end of Tube.

 

General Quality Tests

Corrosion TestConducted only when specially requested by the client
Chemical AnalysisTest done as per required quality standards
Destructive / Mechanical TestingTensile | Hardness | Flattening | Flare | Flange
Reverse-bend and Re. flat testsCarried out in full compliance with relevant standards & ASTM A-450 and A-530 norms, which ensures trouble-free expansion, welding & use at customers end
Eddy Current TestingDone to detect homogeneities in subsurface by using Digital Flaw-mark Testing System
Hydrostatic Testing100% Hydrostatic Testing carried out according to ASTM-A 450 norms for checking tube leakage, and biggest pressure we can support 20Mpa/7s .
Air Under Pressure TestTo check any evidence of air leakage
Visual InspectionAfter passivation, every single length of tubes & pipes is subjected to thorough visual inspection by trained staff for detecting surface flaws & other imperfections


Supplementary Testing : Apart from the above mentioned tests, we also carry out on the manufactured products supplementary testing. The tests conducted under this include:

  • Eddy Current Testing

  • O.P Testing

  • Radiography Testing

  • Corrosion Testing

  • Micro Testing

  • Macro Testing

  • IGC Testing

  • Ultrasonic testing

  • Liquid Penetrate testing


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