Chemical Composition
|
C |
Mn |
P |
S |
Si |
Mo |
|
|
T1 |
0.10-0.20 |
0.30-0.80 |
=0.025 |
=0.025 |
0.10-0.50 |
0.44-0.65 |
|
T1a |
0.15-0.25 |
0.30-0.80 |
=0.025 |
=0.025 |
0.10-0.50 |
0.44-0.65 |
|
T1b |
=0.14 |
0.30-0.80 |
=0.025 |
=0.025 |
0.10-0.50 |
0.44-0.65 |
Mechanical Properties
|
Grade |
T1 |
T1a |
T1b |
|
Tensile Strength min Ksi(Mpa) |
55(380) |
60(415) |
43(365) |
|
Yield Strength Min Ksi(Mpa) |
30(205 |
32(220) |
28(195) |
|
Elongation in 2in or 50mm min% |
30 |
30 |
30 |
Introduction
Our product is a steel tube made of alloy steel without any welds during the manufacturing process. These tubes are formed into hollow tubes by extruding or spinning a solid billet, ensuring uniform strength and excellent structural integrity throughout the tube.
Features
Precision size control
The ASTM A209 Seamless Alloy Tube adopt advanced hot rolling and cold drawing processes, and the outer diameter and wall thickness of the pipe are uniform and stable. The tolerance range is usually controlled between ±0.05mm and ±0.1mm, ensuring the high-precision requirements of processing and assembly.
Smooth surface
Our pipes have a smooth surface, no oxide scale and welding defects, reducing friction resistance and increasing fluid flow rate.
Excellent high temperature resistance
The alloy materials we use have been scientifically heat treated to ensure stable mechanical properties at high temperatures, not easy to soften or deform, and are suitable for high temperature conditions, such as heat exchangers, boilers and aircraft engines.
Customizable
Our products cover a variety of sizes from small diameters to large diameters, with flexible wall thickness, supporting custom-made cutting, polishing and non-standard customized processing for customers' special needs, meeting the diverse needs of different wholesale customers and terminal applications.
Mechanical Tests Required
Tension test
Flattenting Test
Hardness test
Hydrostatic or Nondestructive Electric test
|
Outside Diameter |
Length |
Standard Package |
|
OD = 168.3mm |
L = 13.5m |
Bare in bundle with steel hoops (Round or Hexagonal Form) |
|
13.5mm < L |
Protect under steel hoops (Round or Hexagonal Form) |
|
|
168.3mm < OD |
- |
Bare in loose |
Why Choose Us
Reliable Product Quality
We prioritize long-term partnerships by delivering steel products with stable, traceable quality that meets international standards and client specifications.
Strong Inventory and Sales Capability
With a rolling stock capacity of over 15,000 tons and monthly sales exceeding 30,000 tons, we ensure timely supply and efficient delivery for large-scale and urgent orders.
Comprehensive One-Stop Steel Procurement Service
Leveraging our deep integration within China's specialized steel trade ecosystem, we provide sourcing, inspection, logistics, and export documentation support-streamlining procurement for global buyers.
OEM and ODM Customized Services
As a leading steel pipe stockist and distributor in China, we provide a full range of OEM and ODM solutions to meet the needs of global customers. We support specifications, materials, surface treatment, packaging and brand customization.
FAQ
Q: What is ASTM A209 Seamless Alloy Tube?
A: ASTM A209 specifies seamless carbon and alloy steel boiler, superheater, and heat-exchanger tubes designed for high-temperature service in boilers and pressure vessels.
Q: What materials and grades are covered under ASTM A209?
A: The standard includes several alloy grades such as T1, T11, T12, T22, T23, and T91, each with specific chemical compositions and mechanical properties suitable for different high-temperature applications.
Q: What industries commonly use ASTM A209 tubes?
A: They are widely used in power generation, petrochemical, oil refining, and industrial boiler manufacturing due to their excellent strength and heat resistance at elevated temperatures.
Q: How does ASTM A209 ensure the quality and reliability of seamless alloy tubes?
A: The standard sets strict requirements for chemical composition, mechanical properties (tensile strength, yield strength, elongation), heat treatment, and dimensional tolerances, ensuring consistent performance and safety.
Q: Can ASTM A209 tubes be customized in terms of size and length?
A: Yes, manufacturers usually offer a range of outer diameters, wall thicknesses, and lengths to meet specific project requirements. Customization is often available for critical applications, with third-party inspection and certification.
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