Seamless Steel U bend Tube

Quick Detail:

1,Standards: ASTM A179 (ASME SA179) ASTM A210

2,Grade: A179 A210-A1 T11 T22 T91 T12 etc

Size: (mm)

OD: 25.4mm

WT: 2.77mm

Length: 6 m ~ 25m

Description:

Product: 25.4mm*2.77mm A179 A210-A1 T11 T22 U BEND TUBES FOR HEAT EXCHANGER 

Standard and Grade:

ASTM A210/ASME SA210 A1

ASTM A213/ASME T11  T22 

A106B/A53B/A179/A192/A200/A333/A335/500
ASME SA106B/A53B/A192/A200/A333/A335/500
BS3059  BS6323-4  BS3602-1
EN10297-1    EN10305-1   EN10216-1   EN10216-2    EN10210-1
DIN1629   DIN1630  DIN 17175 DIN2391   DIN17204      DIN2448  
JIS G3452(SGP)   JIS G3461JIS G3462  JIS G3454JIS G3455  JIS G3444 

Type:Seamless (cold drawn) or ERW  

Ends:Plain ends or bevel ends 

Delivery Conditions: BK,BKS,BKW,NBK,GBK( As drawn, quenched and tempered, normalized, annealed, stress-relieved)As different requirements,It including pickling,etc. AS per Standard.

Factory test and other terms:

1.Hydrostatic or Nondestructive Electric Test

2.Heat Treatment: according to Standard
3.Surface Condition:According to Standard.
4.Grain Size:According to standard
5.Sampling:flattening,flaring,grain size,Marking

6.we provide bevel end,plastic cap, varnish coating, oiled or black painted to prevent rustand other packing 

service.

Technical Requirements:

Straight Tubes Standard Specification For Bending:

ASME SA 213; ASTM A179 ;ASTM A210 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.

Customer Specifications.

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 pl