U Bend Tubes

U Bent Tubes / U Bend Tubes Capability:

1.   Tube OD.: 9.5mm-114.3mm.

2.   Tube Thickness: up to 6.35mm.

3.   Bending Radius: Min.1.5 x OD /   Max. 1700mm. 

4.   U tube Straight “leg” Length: Max. 15,000mm.

5.   Straight tube before U bending: Max. 30,000mm.

6.   Production capacity:  500 Ton/Tons per Month

7.   Low fin tubes can be supplied in the form of U bends.

8.   Heat treatment where required by electric furnance or direct resistance

9.   Hydrostatic Testing: Maximum test pressure 25Mpa, soaking 10 Second. with demineralized water. Compressed air cleaning after hydro-test.

10. Marking: before bending by marking machine all over the tube length (bent section after heat treatment without marking).

      Marking is also possible after bending on the straight parts of U-bent tube.

11. Any type of packing is available according to customer need to worldwide destinations.

     11-1. For roadfreight in timber fingers or skids.

     11-2. In strong open or closed wooden boxes depending destination

     11-3. Each bundle is protected with plastic sheets.

     11-4. Customers can provide their own packing or Qinxin can prepare a packing plan.

     11-5. Detailed packings lists are attached to wooden cases to give quick and clear identification of contents.

Note: other sizes are available upon agreement.

      We bring forth an exclusive range of U-bend tubes, which are known for their superior quality and excellent functionality. After U bend (cold forming), heat treatment of bending 

      portion may be required. Temperature is controlled through the entire heat treated area by fixed and portable infrared pyrometers.

Testing Items:

1. Appearance Inspection;

2. Dimensional Inspection;

3. Chemical Composition Testing;

4. Mechanical Properties Testing;

5. PWHT (Stress relieving / Solution Annealing) of U-Bend+300mm of straight length after Bending at about 680 ℃ Holding time 5 to 7 Seconds.

6. 100% Hydrostatic test after Bending;

7. If need, dye penetrant and PMI testing

8. Mill test certificates will be issued according to EN10204.3

9. According to client’s requirement or drawing.

Each U bend tube of our range is rigorously quality checked by our team of talented professionals on every stage of production to deliver the clients defect free best 

quality products.

Product characteristics:                                                                                                                                                                               

1) The All U bend tubes are manufactured in accordance with TEMA R specifications.                                                                                                                            

2) Our competitive prices, rapid quotations and bespoke packing ensure we consistently deliver the highest quality of service.

3) Packing:  Qinxin packs all U Tube bundles in bespoke wooden boxes and separate all U Tubes of different radii using finger pallets to facilitate easy assembly of bundles on 

                   receipt. Plastic wove bag and bundle with plug both end of ends, or wooden box packing, or as clients require.

4)  Sea Port:    Shanghai Port, Taicang Port, China

5)  Application: U bend tubes for heat exchangers applied mostly in Oil & Gas plants, Chemical & Petrochemical plants, Refineries, Power plants, Renewable energy plants.

Note:                                                                                                                                                                                                                        

U-bend tubes, also known as U-bent tubes or U-shaped tubes, are typically made from a variety of materials depending on the specific application and industry requirements. 

The choice of material for U-bend tubes is crucial because it impacts factors such as corrosion resistance, heat resistance, and overall durability.