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ASTM A556 Superheater Steel Tube
ASTM A556 steel tubes are primarily used in high-temperature heater systems, including feedwater heaters and superheaters.
These tubes are designed to withstand elevated temperatures and provide efficient heat transfer.
ASTM A556 is available in different grades, such as Grade A2, Grade B2, and Grade C2. The specific grade depends on the requirements of the application and the desired mechanical properties. ASTM A556 steel tubes can be sourced from various manufacturers and suppliers. It's important to ensure that the tubes meet the requirements of the ASTM A556 specification and any additional project specifications. ASTM A556 steel pipe is mainly for high-temperature heater systems. World iron&steel manufactures and offers ASTM A556 Grade C2 seamless U-bent steel tubes.
ASTM A556 steel tubes can be delivered in the form of U-bend tubes for feedwater heater applications. The U-bend configuration allows for efficient heat transfer and is commonly used in tubular feedwater heaters. The ASTM A556 specification covers minimum-wall-thickness, seamless cold-drawn carbon steel tubes for these purposes.
1.1 This specification covers minimum-wall-thickness, seamless cold-drawn carbon steel tubes including bending into the from of u-tubes, if specified, for use in tubular feedwater heaters.
1.2 The tubing sizes covered shall be 5/8 to 1 2/4-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].
1.3 optional supplementary requirements are provided, and hen desired, shall be stated in the order.
1.4 The values stared in either inch-pound units or SI units are to be regarded separately as the standard. within the text, the SI units are shown in brackets. The values sated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification. The inch-pound units shall apply unless the "M" designation of this specification is specified in the order.
|
Grade |
C % |
Si % |
Mn % |
P % |
S % |
|
A2 |
0.18 |
... |
0.27–0.63 |
0.035 |
0.035 |
|
B2 |
0.27 max |
0.10 min |
0.29-0.93 |
0.030 max |
0.030 max |
|
C2 |
0.30 max |
0.10 min |
0.29-1.06 |
0.030 max |
0.030 max |
|
Grade |
Tensile strength, min, ksi [MPa] |
Yield strength, min, ksi [MPa] |
Elongation in 2 in. or 50 mm, min, % (longitudinal) |
Hardness Requirements |
|
A2 |
47 [320] |
26 [180] |
35 |
HR B 72 |
|
B2 |
60 [410] |
37 [260] |
30 |
HR B 79 |
|
C2 |
70 [480] |
40 [280] |
30 |
HR B 89 |
Tolerances according to specification or according to agreement. Standard tolerances are:
|
Processing methods |
OD |
WT |
|
Hot finished |
+/- 1% |
+/-12.5% |
|
Cold finished |
+/-0.75% |
+/-10% |
Tolerances according to specification or according to agreement. Standard tolerances are:
|
JIS |
ASTM |
BS |
DIN |
NF |
ISO |
Index Number |
||||||||||||
|
Standard Number |
Grade |
Tupe |
Standard Number |
Grade |
Tupe |
Standard Number |
Grade |
Tupe |
Standard Number |
Grade |
Tupe |
Standard Number |
Grade |
Tupe |
Standard Number |
Grade |
Tupe |
|
|
G3461 |
STB340 |
C |
A161 |
LC |
C |
3059 |
HFS320 |
C |
|
|
|
A49-245 |
TS34e |
C |
|
|
|
C010 |
|
|
(STB35) |
|
A192 |
- |
C |
" |
CFS320 |
C |
|
|
|
" |
TS34c |
C |
|
|
|
|
|
|
|
|
A226 |
- |
C |
" |
ERW320 |
C |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
A556 |
GrA2 |
C |
" |
CEW320 |
C |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
A557 |
GrA2 |
C |
" |
S1 360 |
C |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
" |
S2 360 |
C |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
" |
ERW 360 |
C |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
" |
CEW360 |
C |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3606 |
ERW320 |
C |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
" |
CEW320 |
C |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
" |
CFS320 |
C |
|
|
|
|
|
|
|
|
|
|
|
|
STB410 |
C |
A179 |
GrC |
C |
3059 |
S1 440 |
C |
17175 |
St45.8 |
C |
A49-213 |
TU42c |
C |
2604/2 |
TS9H |
C |
|
|
|
(STB42) |
|
A210 |
GrA1 |
C |
" |
S2 440 |
C |
17177 |
St42.8 |
C |
A49-215 |
TU42c |
C |
" |
TW9H |
C |
|
|
|
|
|
A556 |
GrB2 |
C |
" |
ERW 440 |
C |
|
|
|
A49-243 |
TS42c |
|
|
|
|
|
|
|
|
|
A557 |
GrB2 |
C |
" |
CEW 440 |
C |
|
|
|
A49-245 |
TS42c |
|
|
|
|
|
|
|
|
|
|
|
|
3602 |
HFS 410 |
C |
|
|
|
" |
TS42c |
|
|
|
|
|
|
|
|
|
|
|
|
" |
CFS 410 |
C |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
" |
ERW 410 |
C |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
" |
CEW 410 |
C |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3606 |
ERW 440 |
C |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
" |
CEW 440 |
C |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
" |
CFS 440 |
C |
|
|
|
|
|
|
|
|
|
|
|
STB510 |
C |
|
|
|
|
|
|
C |
17175 |
19Mn5 |
C |
A49-213 |
TU52C |
C |
2604/2 |
TS18 |
C |
|
|
(STB52) |
|
|
|
|
|
|
|
C |
|
|
|
A49-248 |
TU52C |
C |
|
|
|
|
This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Packaging And Transportation
1) Packaging: 3 layers of packing. Inside is craft paper, Middle is water plastic film and outside GI steel sheet to be covered by steel strips with lock, with inner coil sleeve or as customers' requirements.
2) Shipping: We have long-term cooperation with many experienced shipping companies and will find the most suitable mode of transportation for you.
3) Trade terms: FOB/CIF/CFR
4) Shipping port: Qingdao/Tianjin/Shanghai
5) Shipment: A: Length: ≤6m, loaded in 20GP Container. B: Length: ≤12m, loaded in 40GP Container.
Remark: Size of 20GP Container (inside :5898*2352*2393mm); Size of 40GP Container (inside:12032*2352*2393mm); Size of 40HQ Container (inside:12032*2352*2698mm).
6) Delivery time: Normal size: 7-15days send from warehouse directly. Special size:15-30days custom made for you.
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