ASTM A213 Grade T22 Boiler Tubes Manufacturer and Supplier – Womic Steel
1. Overview of ASTM A213 T22 Alloy Steel Tubes
ASTM A213 Grade T22 Alloy Steel Seamless Tubes are chromium-molybdenum alloy steel tubes designed for high temperature and high pressure service in boilers, superheaters, and heat exchangers. The material contains approximately 2.25% chromium and 1% molybdenum, providing excellent resistance to oxidation, creep deformation, and thermal fatigue under prolonged high-temperature operating conditions.
The ASTM A213 T22 specification, also referenced as ASME SA213 T22, defines the requirements for seamless ferritic alloy steel tubes used in heat-transfer equipment. The standard covers chemical composition limits, mechanical properties, dimensional tolerances, heat treatment requirements, inspection procedures, and testing methods.
At Womic Steel, we manufacture and supply ASTM A213 Grade T22 Alloy Steel Seamless Tubes for global energy and industrial projects. Our production follows strict quality management systems, and products can be delivered with EN 10204 3.1 or EN 10204 3.2 certification. For European pressure equipment projects, materials are also available with PED 2014/68/EU certification, ensuring full compliance with international pressure vessel regulations.
With advanced seamless tube production lines, stable raw material supply, and experienced metallurgical control, Womic Steel provides high-quality ASTM A213 T22 alloy steel tubes with reliable delivery and competitive performance.
2. Production Specifications and Size Range
The ASTM A213 Grade T22 Alloy Steel Seamless Tubes manufactured by Womic Steel are available in a wide dimensional range suitable for boilers, pressure pipelines, and heat exchangers.
Table 1 – ASTM A213 T22 Tube Size Range
|
Parameter |
Production Range |
| Outside Diameter | 12.7 mm – 273 mm |
| Wall Thickness | 1.5 mm – 35 mm |
| Standard Length | 6 m – 12 m |
| Maximum Length | Up to 18 m |
| Manufacturing Type | Seamless Hot Finished / Cold Drawn |
| Surface Finish | Black / Pickled / Shot Blasted |
The flexible production capability allows Womic Steel to supply both standard boiler tubes and customized dimensions for project requirements.
3. Dimensional Tolerances
Dimensional accuracy is essential for safe operation in pressure systems. ASTM A213 Grade T22 Alloy Steel Seamless Tubes produced by Womic Steel follow ASTM dimensional tolerance requirements to ensure consistent performance during fabrication and installation.
Table 2 – Dimensional Tolerances
|
Parameter |
Permissible Tolerance |
| Outside Diameter | ±0.75% |
| Wall Thickness | ±10% |
| Length | +3 mm / 0 |
| Straightness | ≤1/1000 of length |
| Ovality | Within OD tolerance |
These tolerances ensure excellent compatibility for welding, bending, and heat exchanger assembly applications.
4. Chemical Composition of ASTM A213 Grade T22
The high-temperature performance of ASTM A213 Grade T22 Alloy Steel Seamless Tubes is achieved through carefully balanced chromium and molybdenum alloying elements.
Table 3 – Chemical Composition
|
Element |
Composition (%) |
| Carbon (C) | 0.05 – 0.15 |
| Manganese (Mn) | 0.30 – 0.60 |
| Phosphorus (P) | ≤0.025 |
| Sulfur (S) | ≤0.025 |
| Silicon (Si) | ≤0.50 |
| Chromium (Cr) | 1.90 – 2.60 |
| Molybdenum (Mo) | 0.87 – 1.13 |
The Cr-Mo alloy structure significantly improves creep strength and oxidation resistance, making ASTM A213 T22 alloy steel tubes ideal for long-term high-temperature operation.
5. Mechanical Properties
Mechanical performance is a critical requirement for ASTM A213 Grade T22 Alloy Steel Seamless Tubes, especially in power plant boiler systems operating under high pressure.
Table 4 – Mechanical Properties
|
Property |
Requirement |
| Tensile Strength | ≥415 MPa |
| Yield Strength | ≥205 MPa |
| Elongation | ≥30% |
| Hardness | ≤85 HRB |
These mechanical characteristics ensure the structural integrity of ASTM A213 T22 boiler tubes during prolonged thermal service.
6. Manufacturing Process of ASTM A213 T22 Tubes
At Womic Steel, the production of ASTM A213 Grade T22 Alloy Steel Seamless Tubes follows a strict manufacturing process to ensure metallurgical quality and dimensional consistency.
Typical manufacturing process:
Raw Material Inspection → Billet Cutting → Heating → Hot Piercing → Hot Rolling → Heat Treatment → Straightening → Non-Destructive Testing → Final Inspection → Packaging
Key manufacturing advantages include:
● High-quality alloy billets sourced from qualified mills
● Advanced seamless tube rolling equipment
● Controlled heating and deformation processes
● Complete traceability from billet heat number to finished tube
These processes guarantee the consistent quality of ASTM A213 Grade T22 Alloy Steel Seamless Tubes supplied by Womic Steel.
7. Heat Treatment Requirements
Heat treatment is essential to obtain the required microstructure and high-temperature strength for ASTM A213 T22 alloy steel tubes.
Typical heat treatment methods include:
● Full annealing
● Isothermal annealing
● Controlled cooling after hot rolling
Proper heat treatment ensures optimal grain structure, creep resistance, and mechanical stability during long-term service.
8. Inspection and Testing
All ASTM A213 Grade T22 Alloy Steel Seamless Tubes manufactured by Womic Steel undergo comprehensive inspection and testing to ensure compliance with ASTM and ASME standards.
Mechanical and Physical Testing
● Tensile testing
● Hardness testing
● Flattening test
● Flaring test
● Hydrostatic pressure testing
Non-Destructive Testing
● Ultrasonic testing (UT)
● Eddy current testing (ET)
● Magnetic particle testing (MT)
Certification
Products can be supplied with:
● EN 10204 3.1 Mill Test Certificate
● EN 10204 3.2 Third-Party Inspection Certificate
● PED 2014/68/EU certification
Third-party inspections can be conducted by SGS, BV, TÜV, DNV, or other authorized agencies.
9. Processing and Fabrication Services
In addition to supplying ASTM A213 Grade T22 Alloy Steel Seamless Tubes, Womic Steel also offers a wide range of fabrication services to meet project requirements.
Processing services include:
● Tube bending and forming
● U-bend tubes for heat exchangers
● Precision machining and cutting
● Pipe spool prefabrication
● Drilling and custom end preparation
These value-added services allow customers to receive ready-to-install components, reducing on-site fabrication time.
10. Applications of ASTM A213 T22 Alloy Steel Tubes
Due to their excellent creep strength and oxidation resistance, ASTM A213 Grade T22 Alloy Steel Seamless Tubes are widely used in high-temperature industrial systems.
Typical applications include:
● Power plant boiler tubes
● Superheater and reheater tubes
● Petrochemical heat exchangers
● High-temperature refinery pipelines
● Industrial furnace tubing
The reliability of ASTM A213 T22 alloy steel tubes makes them a critical material for energy infrastructure.
11. Production Capacity and Delivery Advantages
Womic Steel maintains strong production capacity for ASTM A213 Grade T22 Alloy Steel Seamless Tubes.
Our advantages include:
● Multiple seamless tube production lines
● Stable alloy steel billet supply chain
● Experienced metallurgical engineers
● Strict quality control system
Typical production lead time is 15–35 days depending on specifications and order size.
Importantly, Womic Steel has no minimum order quantity, and even one single ASTM A213 T22 alloy steel tube can be supplied to meet urgent project or maintenance needs.
12. Packaging and Global Logistics
To ensure safe delivery, ASTM A213 Grade T22 Alloy Steel Seamless Tubes are packed using export-grade protective packaging.
Packaging methods include:
● Steel-strapped bundles
● Seaworthy wooden cases
● Plastic protective end caps
● Anti-rust oil coating
● Waterproof wrapping
With extensive global logistics experience, Womic Steel provides reliable delivery through sea freight, rail transport, and multimodal shipping routes.
13. ASTM A213 T22 Alloy Steel Seamless Tube Size Keyword Matrix
To support different piping system requirements, ASTM A213 Grade T22 Alloy Steel Seamless Tubes are available in a wide range of nominal pipe sizes and schedules.
Below is a typical keyword matrix covering common nominal bore sizes and schedules for ASTM A213 Grade T22 Alloy Steel Seamless Tubes:
1/2″ NB in Thickness Schedule 20, Schedule 30, Schedule STD, Schedule 40, Schedule 60, Schedule 80, Schedule 100, Schedule 120, Schedule 160, Schedule XXS in ASTM A213 Grade T22 Alloy Steel Seamless Tubes
3/4″ NB in Thickness Schedule 20, Schedule 30, Schedule STD, Schedule 40, Schedule 60, Schedule 80, Schedule 100, Schedule 120, Schedule 160, Schedule XXS in ASTM A213 Grade T22 Alloy Steel Seamless Tubes
1″ NB in Thickness Schedule 20, Schedule 30, Schedule STD, Schedule 40, Schedule 60, Schedule 80, Schedule 100, Schedule 120, Schedule 160, Schedule XXS in ASTM A213 Grade T22 Alloy Steel Seamless Tubes
1-1/2″ NB in Thickness Schedule 20, Schedule 30, Schedule STD, Schedule 40, Schedule 60, Schedule 80, Schedule 100, Schedule 120, Schedule 160, Schedule XXS in ASTM A213 Grade T22 Alloy Steel Seamless Tubes
2″ NB in Thickness Schedule 20, Schedule 30, Schedule STD, Schedule 40, Schedule 60, Schedule 80, Schedule 100, Schedule 120, Schedule 160, Schedule XXS in ASTM A213 Grade T22 Alloy Steel Seamless Tubes
3″ NB in Thickness Schedule 20, Schedule 30, Schedule STD, Schedule 40, Schedule 60, Schedule 80, Schedule 100, Schedule 120, Schedule 160, Schedule XXS in ASTM A213 Grade T22 Alloy Steel Seamless Tubes
4″ NB in Thickness Schedule 20, Schedule 30, Schedule STD, Schedule 40, Schedule 60, Schedule 80, Schedule 100, Schedule 120, Schedule 160, Schedule XXS in ASTM A213 Grade T22 Alloy Steel Seamless Tubes
6″ NB in Thickness Schedule 20, Schedule 30, Schedule STD, Schedule 40, Schedule 60, Schedule 80, Schedule 100, Schedule 120, Schedule 160, Schedule XXS in ASTM A213 Grade T22 Alloy Steel Seamless Tubes
8″ NB in Thickness Schedule 20, Schedule 30, Schedule STD, Schedule 40, Schedule 60, Schedule 80, Schedule 100, Schedule 120, Schedule 160, Schedule XXS in ASTM A213 Grade T22 Alloy Steel Seamless Tubes
10″ NB in Thickness Schedule 20, Schedule 30, Schedule STD, Schedule 40, Schedule 60, Schedule 80, Schedule 100, Schedule 120, Schedule 160, Schedule XXS in ASTM A213 Grade T22 Alloy Steel Seamless Tubes
15.ASTM A213 Alloy Steel Tube Material Comparison
ASTM A213 T22 Alloy Steel Seamless Tubes vs Other Alloy Grades
When selecting materials for high-temperature piping systems, engineers often compare several alloy steel grades defined under the ASTM A213 standard. Among these materials, ASTM A213 T22 Alloy Steel Seamless Tubes are widely used due to their balanced combination of strength, oxidation resistance, and cost efficiency.
The following comparison table highlights the key differences between commonly used grades including ASTM A213 T5, ASTM A213 T9, ASTM A213 T11, ASTM A213 T22, and ASTM A213 T91 Alloy Steel Seamless Tubes.
Table – ASTM A213 Alloy Steel Tube Grade Comparison
|
Grade |
Chromium Content |
Molybdenum Content |
Typical Temperature Resistance |
Main Applications |
| ASTM A213 T5 Alloy Steel Seamless Tubes | 4.0 – 6.0% | 0.45 – 0.65% | Up to 600°C | Refinery heaters, medium temperature boilers |
| ASTM A213 T9 Alloy Steel Seamless Tubes | 8.0 – 10.0% | 0.9 – 1.1% | Up to 650°C | High temperature heat exchangers |
| ASTM A213 T11 Alloy Steel Seamless Tubes | 1.0 – 1.5% | 0.44 – 0.65% | Up to 550°C | Industrial boilers and pressure pipelines |
| ASTM A213 T22 Alloy Steel Seamless Tubes | 1.9 – 2.6% | 0.87 – 1.13% | Up to 600°C | Power plant boilers, superheaters |
| ASTM A213 T91 Alloy Steel Seamless Tubes | 8.0 – 9.5% | 0.85 – 1.05% | Up to 650–700°C | Ultra-supercritical power plants |
16.Why ASTM A213 T22 Alloy Steel Seamless Tubes Are Widely Used
Among these materials, ASTM A213 T22 Alloy Steel Seamless Tubes are considered one of the most widely used chromium-molybdenum alloy steel grades for boiler systems and high-temperature piping.
Compared with ASTM A213 T11 Alloy Steel Seamless Tubes, the ASTM A213 T22 Alloy Steel Seamless Tubes contain higher chromium and molybdenum content, providing improved creep strength and oxidation resistance.
Compared with ASTM A213 T9 Alloy Steel Seamless Tubes, ASTM A213 T22 Alloy Steel Seamless Tubes offer a more cost-effective solution while still delivering excellent high-temperature performance.
Because of these advantages, ASTM A213 T22 Alloy Steel Seamless Tubes are widely used in:
● Power plant boiler tubing systems
● Superheater and reheater pipelines
● Petrochemical heat exchanger tubing
● High-temperature refinery pipelines
At Womic Steel, we manufacture and supply high-quality ASTM A213 T22 Alloy Steel Seamless Tubes with strict quality control and full traceability.
Our advanced production lines and stable alloy steel billet supply allow us to provide ASTM A213 T22 Alloy Steel Seamless Tubes with reliable quality, flexible customization, and fast global delivery.
We pride ourselves on our customization services, fast production cycles, and global delivery network, ensuring your specific needs are met with precision and excellence.
Website: www.womicsteel.com
Email: sales@womicsteel.com
Tel/WhatsApp/WeChat: Victor: +86-15575100681 or Jack: +86-18390957568
Post time: Mar-12-2026