ASTM A106 / ASTM A53 20MnG 25MnG U Bend Welded Tube With Heat Treatment
Quick Detail:
1,Standards: ASTM A179 (ASME SA179) ASTM A210
2,Grade: A179 A210-A1 T11 T22 T91 T12 etc
Size: (mm)
OD: 31.75mm
WT: 2.11mm
Length: 6 m ~ 25m
Description:
Product: 31.75mm*2.11mm 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
