ASME SA249 A688 ASME SA213 Stainless Steel U Bends TP304/TP304L/TP304H/TP321

"U" Stainless Steel Tubes are manufactured in our plant as per the customer requirements. Bend can be Heat Treated in accordance with Client' s Requirements followed by hydrostatic testing and dye penetrant testing if required.
U bend stainless steel tubes are widely used in heat - exchanger systems.Heat exchanger equipment on the basis of seamless stainless U - tubes is essential in strategically important and critical fields - nuclear and petro - chemical machine building.
Stainless Steel U tube heat exchangers Designed for high temperature applications, especially for steam  condensing or hot oil systems.This model is selected when differential expansion makes a fixed tube sheet exchanger unsuitable and when conditions preclude a floating head type (HPF) selection.
 
Standard: ASTM A312, ASTM A269, ASME SA213, ASTM A249, ASME SA249, ASTM A789, EN10216 - 5 A106/A1016M

Initial  Length: Maximum Lengths of 27000mm can be supplied on request.

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).

The basic Testing and processing:

1.High Pressure hydrostatic Test: Minimum: 10 Mpa - - 25Mpa

2.Air Under Water Test After Bending

3.U Tube wall thickness Test

4.Eddy Current Test Before U bend Formed

5.Ultrasonic test before U bend Formed

6.Heat Treatment to stress relieved

7.Ball passing Test

The below sizes are those most frequently used, other sizes can be produced upon request.