ASTM A250 alloy steel pipes include minimum wall thickness electric resistance welded carbon-molybdenum and chrome-molybdenum alloy steels, boiler tubes and superheater tubes.
ASTM A250 alloy round tubes cover multiple grades, such as T1, T1a, T1b, T2, T11, T12 and T22, etc. The size and thickness of the steel pipes are wide, and the outer diameter is usually from 1/2 to 5 inches (12.7 to 127 mm), and the minimum wall thickness is 0.035 to 0.320 inches (0.9 to 8.1 mm), which can also be provided according to the actual requirements of customers.
ASTM A250 alloy boiler tubes usually need to be heat treated to improve their structure and properties. Common heat treatment methods include normalizing, quenching and tempering.
Products Data
Chemical Composition of ASTM A250 Grade T11 T12 Alloy Piping
| Element | Minimum (%) | Maximum (%) |
|---|---|---|
| Carbon (C) | 0.05 | 0.15 |
| Silicon (Si) | 0.5 | 1.0 |
| Manganese (Mn) | 0.3 | 0.6 |
| Phosphorus (P) | - | 0.025 |
| Sulphur (S) | - | 0.02 |
| Chromium (Cr) | 1.0 | 1.5 |
| Molybdenum (Mo) | 0.44 | 0.65 |
Mechanical Properties of ASTM A250 T11 Structural seamless pipe
| Property | Value |
|---|---|
| Tensile Strength (σb, MPa) | ≥ 415 |
| Yield Strength (σs, MPa) | ≥ 205 |
| Elongation (δ, %) | ≥ 30 |
Mechanical Properties of ASTM A250 Grade T12 steel alloy pipe
| Property | Value |
|---|---|
| Tensile Strength (σb, MPa) | ≥ 415 |
| Yield Strength (σs, MPa) | ≥ 220 |
| Elongation (δ, %) | ≥ 30 |
Products display
ASTM A250 High pressure alloy steel pipe
Why Choose GNEE
GNEE has 10 hot-rolled seamless steel pipe production lines and 5 cold-drawn seamless steel pipe production lines. It is capable of producing seamless pipes of various specifications and materials. The products are widely used in the fields of petroleum, electric power, chemical industry, coal, machinery, etc.
If you would like to know more about our company or our products, please feel free to contact us. sales@gneetube.com
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FAQ
Q.Where are you located? Can I visit you?
A.Sure, you are welcome to visit our factory anytime.
Q.What is your after-sales service?
A.We provide after-sales service and 100% quality assurance for our products.
Q.What is your delivery time?
A.Delivery time is usually about 1 month, if we have stock, we can ship within 7 days.
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