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.

Grade (UNS)	304/304L/304H (1.4301/1.4306/1.4948); 316/316L (1.4401/1.4404);  316Ti (1.4571)321 (1.4541); 309S (1.4833); 310S (1.4845); 317L (1.4438); 321H (1.4878); 347H (1.4550)2205 (1.4462), S31803, 2507, 904L
Outside Dia:	12.7mm - - 38.1mm (0.625" - - 1.252")
Wall thickness:	0.89 - - 2.77mm
Standards (Norm):	ASTM A688 Standard for U bend Stainless steel Tube; ASTM A566
	EN 10216 - 5, DIN 17456, DIN 17458
	GB/T 14975, T 14976, T 13296, GB 5310
	ASTM  A213, A 269, A312, A511, A789, A790
	JIS G3459, G3463
	GOST 9940, GOST 9941

48mm x 10mm 321 Seamless Stainless Steel Pipes SS316L Welded Pipes to ASTM A312 Corrosion Resistance ASTM A790 2205 Duplex Stainless Steel Pipes 1.4462 Duplex Steel Bars Annealed Stainless Steel Seamless Tube JIS G3459 JIS G3461 SUS304 OD 6 - 830mm ASTM A312 TP316L Stainless Steel Pipes For Oil And Gas S31803/S31500 Duplex Stainless Steel Pipe , Aneanled Steel Seamless Pipe Heat Exchanger Seamless Stainless Steel Pipe 309S 201/301 GB/T13296-91