Project Description

Heat Exchanger U Bend Tubes

Heat Exchanger U Bend Tubes materials have Carbon steel, Stainless Steel, Copper Alloys, Duplex Alloys, Titanium, Monel Alloys, Nickel Alloys.

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Applications:

U Bend Tubes for Heat Exchangers applied mostly in oil & gas plants, chemical & petrochemical plants, refineries, power plants, renewable energy plants.

U bending tube Standard and Materials:

  • ASTM A179/ ASME SA179;
  • ASTM A213/ ASME SA 213, T11, T22, T22, T5;
  • ASTM A213/ ASME SA213, TP304/304L, TP316/316L, S31803, S32205, S32750, S32760, TP410;
  • ASTM B111, C44300, C68700, C70600, C71500;
  • ASTM B338, GR.1, GR.2.
  • Monel Alloys.
  • Nickel Alloys.

U Bend Dimension capability

  • Tube OD.: 12.7mm-38.1mm.
  • Tube Thickness: 1.25mm-6mm.
  • Bending Radius: Min.1.5 x OD/ Max. 1250mm.
  • U tube Straight “leg” Length: Max. 12500mm.
  • Straight tube before U bending: Max. 27000mm.

U Bend Tube Tolerance:

Standards usually required to establish U bend tube tolerances:

ASTM A556/556M

ASTM B395 / B395M

ASTM A688/688M

ASTM A803/803M

TEMA Section 5 RCB 2.31

DIN 28179

U bend tube heat treatment

After U bend (cold forming), heat treatment of bending portion may be required. nitrogen generating machine (to protect stainless steel tube surface during annealing). Temperature is controlled through the entire heat-treated area by fixed and portable infrared pyrometers.

U bend tube Drawing:

ASTM A213 Stainless U Bent Tube Drawing

ASTM A213 Stainless U Bent Tube Drawing

ASTM A179 U Bending Tube Drawing

ASTM A179 U Bending Tube Drawing

  • Flattening Test

One flattening test shall be made on specimens from each end of one finished tube, not the one used for the flaring test, from each lot.

  • Flaring Test

One flaring test shall be made on specimens from each end of one finished tube, not the one used for the flattening test, from each lot.

  • Hydrostatic or Nondestructive Electric Test

Each tube shall be subjected to the nondestructive electric test or the hydrostatic test. The type of test to be used shall be at the option of the manufacturer, unless otherwise specified in the purchase order.

Note:

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

  • All tubes shall be supplied as per applicable standard Specification.

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U bend tube photos:

ASTM A213 TP316L U Bending Tubes

ASTM A213 TP316L U Bending Tubes

ASTM A789 S31803 U Bending Tubes

ASTM A789 S31803 U Bending Tubes

long u-bent / u-bend / u-bending tubes with small outside diameter

long u-bent / u-bend / u-bending tubes with small outside diameter

Packing

  • Packed in ply wooden box wrapped in plastic, and suitably protected for sea-worthily delivery or as requested.

Packing photos:

U bend Tube Packing by Wooden Box

U bend Tube Packing by Wooden Box

Get in Touch

If you are interested in our products or cooperation with us, even having a comment or a suggestion, please contact us now for more detailed information.

Tel.: +86 185 5109 0083 | E-mail: cts@ctstubes.com

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Standard and Product List