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ASTM A556/ASME SA556 Standard Specification for Seamless Cold-Drawn Carbon Steel Feedwater Heater Tubes |
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| Standard: ASTM A556, ASME SA556 | |||||||||
| Material: SA556A2 | |||||||||
| Chemistry Composition | |||||||||
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| Mechanical Properties | |||||||||
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| Outside Diameter & Tolerance | |||||||||
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| Wall thickness & Tolerance | |||||||||
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| ASTM A556/A556M specification covers minimum-wall-thickness, seamless cold-drawn carbon steel tubes including bending into the form of U-tubes, if specified, for use in tubular feedwater heaters. The tubing sizes covered shall be 5⁄8 to 11⁄4-in. [15.9 to 31.8-mm] outside diameter, inclusive, with minimum wall thicknesses equal to or greater than 0.045 in. [1.1 mm]. | |||||||||
| Manufacture: tubes shall be made by the seamless process and shall be cold drawn. Heat Treatment: cold-drawn tubes shall be heat treated after the final cold-draw pass at a temperature of 1200°F [640°C] or higher to ensure ductility satisfactory for rolling into tube sheets and to meet mechanical properties as specified. If stress-relief anneal of the U-bends is specified, the anneal shall consist of heating the bent portion within a range of 1100 to 1200°F [585 to 640°C]. Inspection & Test: tension test, flattening test, flaring test, hardness test, NDT, surface inspection and dimension check. |
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| Length: 11800mm; 12000mm; 16000mm; 18000mm; 20000mm; and so on. Max length: 27000mm, also U bending can be offered. |
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| Keyword: superheater steel tube, feedwater steel tube, ASTM A556, ASME SA556 | |||||||||
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