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

Galvanized Large Diameter SS Stainless Steel Pipe For Water Supply 1.4401/1.4878 ASTM A789 2205 (S31803) Seamless Duplex Stainless Steel Pipes ASTM A269 STPG42 G3456 SCH4O Seamless Stainless Steel Pipes AP/BA Welded Cold Drawn Pipe Stainless steel Seamless Pipe and Tubes 304 304L 316 316L 321 317H 316Ti 904L ASTM A790 UNS S31803 Duplex Seamless Stainless Steel Pipes ASTM Stainless Steel Welded Steel Pipe Exporter Custom TP321 Duplex Stainless Steel Seamless Pipe 304/304L/316L Large Diameter Super Duplex Stainless Steel Pipe UNS S31500 ASTM A789 A790