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.
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 B395 / B395M
TEMA Section 5 RCB 2.31
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:
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.
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.
Mill test certificates will be issued according to EN10204.3.
All tubes shall be supplied as per applicable standard Specification.
U bend tube photos:
- Packed in ply wooden box wrapped in plastic, and suitably protected for sea-worthily delivery or as requested.
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