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U Bend Tubing

U Bend Tubing

Our U Bend Tubing is manufactured in accordance with ASTM A789 standards, using high-quality duplex and super duplex stainless steel that combines the advantages of ferritic and austenitic structures. It exhibits excellent corrosion resistance, resistance to stress corrosion cracking, and high strength, enabling stable operation in high-temperature, high-pressure environments. It is suitable for heat exchangers, condensers, boilers, and evaporators.

Outer Diameter: 5mm-42mm (customizable)
Wall Thickness: 0.5mm-5mm (customizable)
Length: Can be customized upon request
Standards: ASTM A789 , Or as per customer specifications.
Steel Grade: S31200 S31260 S31500 S31803 S32001 S32101 S32202 S32205 S32304 S32506 S32520 S32550 S32707 S32750 S32760 S32808 S32900 S32906 S32950 S33207 S39274 S39277 S82011 S82031 S82441 S83071

Product Introduction

Products Description

 

Our Advantages 

 

1. Superior Corrosion Resistance

  • We offer premium duplex and super duplex stainless steel materials, exhibiting excellent resistance to pitting corrosion, crevice corrosion, and stress corrosion cracking in chloride-rich seawater and chemical media.
  • Each batch of TORICH tubing undergoes rigorous chemical composition testing to ensure that the materials used comply with ASTM A789 specifications.

 

2. U-Bending Quality

  • The U Bend Tubing undergoes stress-relief heat treatment after bending to ensure it will not crack or deform, enhancing its corrosion resistance.
  • Our U-tubes are CNC bent to ensure consistent geometry in each U-bend, facilitating heat exchanger assembly.

 

3. Precise Dimensions

  • Our tubing is manufactured using a cold-drawing process, resulting in tight dimensional tolerances and a smooth surface. Mechanical straightening technology ensures the tubes' straightness, preventing any impact on the installation fit with the tube sheet.
  • TORICH tubing undergoes rigorous dimensional inspection to ensure complete compliance with customer drawings and heat exchanger design requirements.

 

4. Surface Quality

  • The U Bend Tubing undergoes pickling and passivation treatment, resulting in a smooth surface and a protective chromium oxide layer. This effectively reduces fluid friction and deposit buildup, lowering the risk of pitting corrosion.
  • TORICH ensures each batch of formed tubes is free of cracks, delamination, inclusions, and dirt through rigorous surface and non-destructive testing.

 

5. Customization Services

  • TORICH offers a full range of duplex steel grades, providing mechanical or electropolishing and ultra-clean internal surface treatments. Our professional engineering team offers support, including technical drawing review and material selection.
  • We can customize outer diameters and wall thicknesses to meet specific project requirements, ensuring your heat exchanger design and operating conditions meet your specific needs.

 

6. Packaging and Shipping

  • Our U-tubes are packaged in wooden crates with grooves to prevent deformation. The tubes are sealed with plastic caps and plastic film to prevent damage or contamination during transport.
  • We offer sea, air, and land shipping options. Samples are available, and each package has clear labeling and traceability codes.

 

application areas

 

  • Oil and Gas Industry: Offshore and onshore heat exchangers for handling high-chlorinated, acidic gases, and high-pressure process streams.
  • Petrochemical and Chemical Processing: Heat exchangers, condensers, and reboilers suitable for operation in corrosive chemicals, organic acids, and high-temperature process media.
  • Marine and Offshore Engineering: Seawater-cooled heat exchangers, marine coolers, and seawater desalination systems.
  • HVAC and Refrigeration Systems: High-precision heat exchangers for industrial refrigeration units and high-efficiency cooling systems.
  • Power Generation: Used in boiler waste heat recovery units and cooling systems.

 

Chemical Composition

Element C Mn P S Si Cr Ni Mo N
S31803/S32205 ≤0.03 ≤2.00 ≤0.030 ≤0.020 ≤1.00 21.0–23.0 4.5–6.5 2.5–3.5 0.14–0.20
S32750 ≤0.03 ≤1.20 ≤0.035 ≤0.020 ≤0.80 24.0–26.0 6.0–8.0 3.0–5.0 0.24–0.32
S32760 ≤0.03 ≤1.00 ≤0.030 ≤0.010 ≤1.00 24.0–26.0 6.0–8.0 3.0–4.0 0.20–0.30

 

Mechanical Properties

Property Tensile Strength (MPa) Yield Strength 0.2% (MPa) Elongation (%) Hardness (HB)
S31803/S32205 ≥620 ≥450 ≥25 ≤290
S32750 ≥795 ≥550 ≥25 ≤310
S32760 ≥750 ≥550 ≥25 ≤310

 

Possible Alternative Grades

Alternative Grades Reasons
TP304/304L Low cost, suitable for general industrial heat exchangers, HVAC systems, and medium- and low-temperature media.
Titanium Grade 2 Lightweight and highly corrosion-resistant, widely used in marine heat exchangers and seawater desalination plants.
Inconel 625 Excellent corrosion resistance and high-temperature strength. Suitable for acidic media, high-temperature chemical plants, and aerospace applications.

 

Products Show

U Bend Tubing
U Bend Tubing

 

 

Testing Equipment

Eddy Current Flaw Detector
Eddy Current Flaw Detector
Hydraulic Universal Testing Machine
Hydraulic Universal Testing Machine
Intergranular Corrosion Tester
Intergranular Corrosion Tester

 

Factory Equipment

Pickling Equipment

Pickling equipment

Polishing Equipment
Polishing equipment
Cold drawing equipment
Cold drawing equipment

 

 

Products Package


stainless steel pipe package

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