ASME SA209 is a seamless carbon-molybdenum alloy steel pipe, mainly used in high-temperature applications such as boilers, boiler flues, and superheaters. The pipe manufacturing process involves reheating the steel and then fully annealing, isothermal annealing or normalizing quenching and tempering to achieve the required properties.
ASTM A209 steel pipe has a typical chemical composition with 0.44-0.65% molybdenum added to improve the material's corrosion resistance and high temperature performance. According to ASTM A209 T1B grade, this pipe has a minimum tensile strength of 415 MPa and a minimum yield strength of 220 MPa.
ASME SA209 seamless tube specifications cover multiple grades of minimum wall thickness, including seamless carbon-molybdenum alloy steel boiler tubes and superheater tubes. During the manufacturing process, careful consideration needs to be given to material grade, chemical composition, surface condition, etc., and appropriate production processes to ensure the best pipe for the end use. It has excellent mechanical properties and corrosion resistance and is widely used in boilers, boiler flues, superheaters and other fields.
Chemical Composition of ASTM A209 Boiler Pipe
|
Element |
Composition, % |
|
|
Grade T1 |
Grade T1a |
|
|
Carbon |
0.10–0.20 |
0.15–0.25 |
|
Manganese |
0.30–0.80 |
0.30–0.80 |
|
Phosphorus, max |
0.025 |
0.025 |
|
Sulfur, max |
0.025 |
0.025 |
|
Silicon |
0.10–0.50 |
0.10–0.50 |
|
Molybdenum |
0.44–0.65 |
0.44–0.65 |
ASTM A209 Boiler Tube Hardness Requirements
|
|
Brinell Hardness Number (Tubes 0.200 in. [5.1 mm] and over in Wall Thickness), HBW |
Rockwell Hardness Number (Tubes less than 0.200 in. [5.1 mm] in Wall Thickness), HRB |
|
Grade T1 |
146 |
80 |
|
Grade T1a |
153 |
81 |
The steel pipe inspection process has the following points:
Steel pipe wall thickness inspection: micrometer, ultrasonic thickness gauge, no less than 8 points at both ends and recorded.
Steel pipe outer diameter and ovality inspection: caliper, vernier caliper, ring gauge, measuring points and small points.
Steel pipe length inspection: steel tape measure, manual, automatic length measurement.
Steel pipe bending inspection: ruler, level (1m), feeler gauge, thin wire to measure the bending per meter and the whole length.
Steel pipe end bevel angle and blunt edge inspection: square ruler, clamping plate.
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FAQ
Q. What is your lead time?
A. We have enough stock every day, so for regular sizes, we only need about 7 days stock. If you if you want to order special size, we need new product production time.
Q. Can we visit your factory?
A. Of course you can, we welcome you to visit our factory, check our production line and understand our strength and quality.
Q. What are the packing terms?
A. Usually we pack the goods in bundles or rolled up with rods or belts, we can also pack the goods according to customer's requirements.
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