ASTM A556 Grade B2 Seamless Cold-Drawn Feedwater Heater Tube
- ASTM A556
- China
- Stock
- Grade B2
ASTM A556 Grade B2 Seamless Cold-Drawn Feedwater Heater Tubes sizes covered shall be 5 ⁄ 8 to 1 1 ⁄ 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].
ASTM A556 Grade B2 Seamless Cold-Drawn Feedwater Heater Tube
ASTM A556 Grade B2 Seamless Cold-Drawn Feedwater Heater Tubes
Standard:ASTM A556/A566M
Standard Specification for Seamless Cold-Drawn Carbon Steel Feedwater Heater Tubes
ASTM A556 Grade B2 Steel Tubes covers minimum-wall-thickness,seamless cold-drawn carbon steel tubes including bending into the form of U-tubes, for use in tubular feedwater heaters.
ASTM A556 Grade B2 Seamless Cold-Drawn Feedwater Heater Tubes sizes covered shall be 5 ⁄ 8 to 1 1 ⁄ 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].
ASTM A556 Grade B2 Cold-Drawn Feedwater Heater Tubes Quick Details
Company Name: beite steel pipe
Country/Region: China
Product Name：ASTM A556 Grade B2 Feedwater Heater Tubes
Manufacture：Seanmless And Cold drawn.
Outside Diameter：15.9mm——38.1mm
Wall thickness：1.1mm——5mm
Length：6000mm、12000m or specified length as require
Port of Shipment：Tianjin,China
Payment：L/C or T/T
Delivery: 7-15 days after payment
Package: Bundles (hexagonal),Wooden Boxes,Crates (steel/wooden)
Manufacture
ASTM A556 Grade B2 Seamless Cold-Drawn Feedwater Heater Tubes are 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].
Chemical Composition
| Element | Composition, % |
| Grade B2 | |
| Carbon, max | 0.27 |
| Manganese | 0.29–0.93 |
| Phosphorus, max | 0.035 |
| Sulfur, max | 0.035 |
| Silicon, min | 0.10 |
Mechanical Properties
| Grade B2 | |
| Tensile strength, min, ksi [MPa] | 60 [410] |
| Yield strength, min, ksi [MPa] | 37 [260] |
|
Elongation in 2 in. or 50 mm, min, % (longitudinal)
|
30 |
| Hardness | HR B 79 |
Tolerances of ASTM A556 Grade B2 Feedwater Heater Tubes
|
Hot finished
|
OD +/- 1%
|
WT +/-12.5%
|
|
Cold finished
|
OD +/-0.75%
|
WT +/-10%
|
Mechanical Tests
Tension Test
Flattening Test
Flaring Test
Hardness Test
Hydrostatic Test
Packaging
Bundles (hexagonal),
Wooden Boxes,
Crates (steel/wooden)
The tubing be packaged or bundled in such a manner as to prevent damage in ordinary handling and transportation and identified by a tag with the name of the manufacturer, purchase order number, specification number and grade, and size.
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