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Stainless Steel U Tube


Applications The common application fields are:

·         heat exchangers (condensers, evaporators, sea water desalinators)

·         chemical and petrochemical industries

·         food processing and refrigeration industries

Technical Specifications

U-bent tubes are manufactured according to the technical specifications requested by customers:

·         Outside diameter of the tube: 6 ÷ 90 mm.

·         Maximum overall length: > 26 m.

·         Bending radius (min.): 1,5 × tube diameter.

·         Bending radius (max.): 1200 mm.

·         Heat treatment (by Joule effect on bent area) in inner and outer inert atmosphere.

·         Anti oxidation surface treatment (with protective oils).

·         Trimming and deburring of the ends.

·         Internal cleaning and caps insertion.

·         Packing in custom racks.


Stainless Steel U Bend Tube ASME B163 B677 N8904 / 904L Pickled and Annealed & Plain End

U-Bend Tube are widely used in Heat Exchanger Systems. Heat-Exchanger Equipment on the basis of
Seamless Stainless U-Tubes and Welded Stainless U bend Tube is essential in strategically important.

The U-Bend Tube Comply 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

TP409

TP409S

TP304/304L
TP316/316L
TP316Ti
TP317/317L
TP321
TP347

TP347 HFG

TP347

S31803
S32205
S32304

S31500

S31254

253MA

S32750
S32760

N06600

N06601

N06625
N08020
N08800

N08810

NO8811
N08825
N08904

Gr.2





 

 

 

 

Tube Of Other Alloys And Steel Grades Can Be Produced Upon Agreement.


Technical Requirements:

Straight Tubes Standard Specification For Bending:
ASME SA 213; ASME SB 163; ASME A789, ASME SA268, ASME SA269, etc.
Marking: Before Bending By Marking Machine All Over The Tube Length (Bent Section After Heat
Treatment Without Marking)
Note: Marking is also possible After Bending On The Straight Parts Of U-Bending Tube.

U-Bend Tubes:
-TEMA RCB 2.31 Standard Of The Tubular Exchanger Manufacturers Association (9th Edition).
-ASTM A688/ASME SA688 Standard Specification For Welded Tubes Of Austenitic Corrosion Resistant
Steel Grade Designed For Feed Water Boilers.
-ASTM B163/ASME SA163 Standard Techinical Requirements For Tubes Of Nickel And Nickel Alloy For
Condensers And Heat Exchangers.

 

Bending Radius: From 1.5*OD(Outside Diameter) To 1500mm
When Ordering Tubes With Radius less or equal to 1.5*OD, It Is Necessary To Agree Precision Of Geometrics.
Straight Tubes Maximum Length:(Before Bending): 35000 mm.
Leg Length: Min 1 Meter, Max. 16500 mm (For Max R=1500mm)
Note: Other Size Are Available Upon Agreement.
Heat Treatment: Stress Relieved After U-Bending (Bending Area Plus 300MM For Each Leg).
Hydrostatic Test After U Bending: Maximum Test Pressure 600 Bar, Soaking 10 Sec. With
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.

Some of the quality tests carried out by us includes:

Corrosion Test

Conducted only when specially requested by the client

Chemical Analysis

Test done as per required quality standards

Destructive / Mechanical Testing

Tensile | Hardness | Flattening | Flare | Flange

Reverse-bend and Re. flat tests

Carried 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 Testing

Done to detect homogeneities in subsurface by using Digital Flaw-mark Testing System

Hydrostatic Testing

100% 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 Test

To check any evidence of air leakage

Visual Inspection

After 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

·          

EXIT

NIGERIA

14,Chegbeyeri Awani Street,

Off Ajamimogha Road, Warri,

nigeria@larionsteelproducts.com

USA

10960 Millridge North,

Suite 107 Houston,TX77070.

usa@clarionsteelproducts.com

CHINA

15 Baishiqiao Road,

Suite 30233 Beijing 100873,

china@clarionsteelproducts.com

FRANCE

42,rue du Pavé des Gardes

F-92370 Chaville,

france@clarionsteelproducts.com

SOUTH AFRICA

11a, Muller Street, South Kelvin,

2054, Buccleuch.

southafrica@clarionsteelproducts.com