U-Bend Heat Exchanger Tubes
Precision U-bend tubes for shell & tube heat exchangers, feedwater heaters, condensers and process heat-transfer equipment.
DLSS supplies U-bend heat exchanger tubes in stainless steel, duplex, super duplex, nickel alloy, titanium, copper alloys, carbon steel and selected alloy steel grades, manufactured according to project drawings with controlled bend geometry, wall thinning, ovality and inspection requirements.
- Custom Bend Geometry — Radius · Leg Length · Developed Length
- Wide Material Range — Stainless · Duplex · Nickel · Titanium · Copper Alloy · Carbon Steel
- Bend Quality Control — Wall Thinning · Ovality · Alignment
- Inspection Support — NDE · Dimensional · Hydro · TPI
Custom Bend Radius
Drawing-Based Geometry
Straight-Leg Length
Project-Specific Dimensions
Post-Bend Treatment
Where Required
Inspection Support
Dimensions · NDE · TPI
Precision U-Bend Tubes for Heat Exchanger Bundles
U-bend tubes form a continuous flow path through a controlled 180° bend and are widely used in U-tube heat exchanger bundles.
Their manufacture requires more control than straight tubing because the bending process can affect wall thickness, tube roundness, leg alignment and material condition in the bend area.
Critical purchasing requirements include:
Tube OD · Wall thickness · Developed length · Straight-leg length · Bend radius · Tube pitch · Wall thinning · Ovality · Bend-plane alignment · Surface condition · Post-bend heat treatment · Nondestructive examination
DLSS reviews the base-tube material standard, exchanger drawing, bend geometry and inspection requirements before production.
Bend Geometry
Radius · Length · Alignment
Wall Control
Thinning at Bend Area
Ovality Control
Roundness After Bending
Traceability
Base Tube to Finished U-Tube
U-Bend Heat Exchanger Tube Materials
Stainless Steel
304/304L · 316/316L · 321 · 347/347H · 904LFor general process, refinery, chemical and heat-transfer service.
Duplex Stainless Steel
S31803 · S32205For chloride-containing and corrosion-critical process environments.
Super Duplex
S32750 · S32760For severe chloride and demanding corrosion service.
Nickel Alloy
400 · 600 · 625 · 800/800H · 825 · C22 · C276For demanding chemical and high-temperature process applications.
Titanium
Grade 2 · Grade 7 · Grade 12For selected seawater, condenser and chloride-critical applications.
Copper Nickel
C70600 · C71500For condensers and selected cooling-water applications.
Brass
C68700 · C44300For condenser, evaporator and cooling-water applications.
Carbon & Alloy Steel
ASTM A179 · Selected A213 T-SeriesFor heat exchangers and selected elevated-temperature applications.