ASTM A179 | ASTM A192 | ASTM A213 | ASTM A249 | ASTM A556 | ASME SA specifications
Elite supplies U-bend tubes for shell-and-tube heat exchangers, condensers, feedwater heaters, and other thermal equipment. U tubes are manufactured from specified straight tube lengths and formed into a U-shaped configuration, allowing thermal expansion while accommodating compact exchanger designs.
Available materials include carbon steel, low-alloy steel, stainless steel, and other project-specified alloys. Tube outside diameter, wall thickness, bend radius, leg length, heat treatment, and inspection requirements are selected according to the approved drawings and applicable tube specification.
| Standard | Typical grades / Materials | Typical application |
| ASTM A179 / ASME SA179 | Seamless low-carbon steel | Heat exchangers and condensers |
| ASTM A192 / ASME SA192 | Seamless carbon steel | High-pressure boiler tube applications where specified |
| ASTM A213 / ASME SA213 | T5, T11, T22, T91, TP304/304L, TP316/316L and other applicable grades | Alloy and stainless heat-transfer tubes |
| ASTM A249 / ASME SA249 | TP304/304L, TP316/316L and other applicable grades | Welded austenitic heat-exchanger and condenser tubes |
| ASTM A556 / ASME SA556 | Applicable carbon-steel grades | Seamless cold-drawn feedwater-heater tubes |
| The exact standard must match the equipment design and purchase specification; not every listed tube standard is suitable for every U-bend application. | ||
| Parameter | Elite Specification |
|---|---|
| Product | U-Bend Tubes |
| Manufacturing | Seamless or welded where permitted by the applicable specification |
| Base Tube Standards | ASTM A179, A192, A213, A249, A556 and other applicable specifications |
| Outside Diameter | Project-specific; commonly approximately 12.7–114.3 mm |
| Wall Thickness | As specified by the design |
| Leg Length | Customer drawing or exchanger design |
| Bend Radius | Specified centerline radius |
| Bend Configuration | U-bend, with equal or unequal legs as specified |
| Material | Carbon steel, alloy steel, stainless steel and other specified alloys |
| Heat Treatment | As required by material specification and bend design |
| End Preparation | Plain, square cut or specified |
| Inspection | Dimensional, material, bend-area and NDE testing as required |
| Documentation | MTC, inspection reports, bend records and applicable test documentation |
Ordering information: Tube Standard + Grade + OD + Wall Thickness + Leg Length + Bend Radius + U-Bend Quantity + Heat Treatment + Inspection + Documentation.
Example: ASTM A213 TP316L U-Bend Tube, specified OD and wall thickness, 1,500 mm leg length, 75 mm centerline bend radius, heat treatment and inspection according to the approved drawing.
