A334 Grade 7 Carbon and Alloy-Steel Tubes Application
ASTM A334 Grade 7 carbon steel pipe chemical composition
Element |
Carbon, max |
Manganese |
Phosphorus, max |
Sulfur, max |
Silicon |
Nickel |
Chromium |
Copper |
Aluminum |
|
Grade 7 |
0.19 |
0.90max |
0.025 |
0.025 |
0.13–0.32 |
2.03–2.57 |
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A334 Grade 7 Carbon and Alloy-Steel Tubes/pipes mechanical properties
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Grade 7 |
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ksi |
MPa |
|
Tensile Strength, min |
65 |
450 |
|
Yield Strength, min |
35 |
240 |
|
Elongation in 2 in. or 50 mm (or 4D), min, %: |
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Basic minimum elongation for walls 5 / 16 in. [8 mm] and over in thickness, strip tests, and for all small sizes tested in full section |
30 |
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When standard round 2-in. or 50 mm gage length or proportionally smaller size specimen with the gage length equal to 4D(4 times the diameter) is used |
22 |
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For strip tests, a deduction for each 1 / 32 in. [0.8 mm] decrease in wall thickness below 5 / 16 in. [8 mm] from the basic minimum elongation of the following percentage Points |
1.50B |
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ASTM A334 Grade 7 carbon and alloy welded pipe/tube dimension
ERW; outer diameter:21.3-660mm thickness:6-25mm
LSAW; outer diameter:325-1524mm thickness:6-50mm
SSAW: outer diameter:219-3200mm thickness:5-25mm
ASTM A334 Grade 7 carbon and alloy welded pipe/tube application
The transportation of fluids in the projects and big equipments, for example transport of water, oil, gas etc Can be used in low and medium pressure boiler for the transportation of fluids, for example steam tube, big smoke tube, small smoke tube, generating tube etc
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