ASTM A213 T22 Tubes | ASME SA213 T22 Alloy Steel Seamless SMLS Tubes
ASTM A213 T22 tubes are seamless ferritic alloy steel tubes designed for high-temperature and high-pressure service in boilers, superheaters, heat exchangers and petrochemical processing systems.
Manufactured according to ASTM A213 / ASME SA213 standards, T22 alloy steel seamless tubes provide:
- excellent high-temperature strength
- superior creep resistance
- good oxidation resistance
- reliable pressure performance
We are a professional ASTM A 213 T22 Pipes,ASTM A 213 T22 tubes,ASME SA213 T22 Alloy Steel Seamless SMLS Tube supplier and exporter in China.
What is ASTM A213 T22 Tube?
ASTM A213 T22 tube is a seamless ferritic alloy steel tube manufactured for:
- high-temperature service
- pressure applications
- heat transfer systems
T22 is a chromium-molybdenum alloy steel containing:
- approximately 2.25% chromium
- approximately 1% molybdenum
This alloy composition provides:
- high-temperature strength
- oxidation resistance
- creep resistance
- excellent durability under pressure
T22 tubes are commonly used in:
- boilers
- superheaters
- condensers
- heat exchangers
- refinery heaters
ASTM A213 / ASME SA213 Standard
ASTM A 213-A213M/ ASME SA213 is the standard specification for:
- seamless ferritic alloy steel tubes
- seamless austenitic alloy steel tubes
- boiler tubes
- superheater tubes
- heat exchanger tubes
The standard covers:
- chemical composition
- mechanical properties
- heat treatment
- testing requirements
- dimensional tolerances
ASTM A213 T22 Tube Specifications
| Specification | Details |
|---|---|
| Product | Alloy Steel Seamless Tube |
| Standard | ASTM A213 / ASME SA213 |
| Grade | T22 |
| Material Type | Ferritic Alloy Steel |
| Manufacturing Process | Seamless |
| Tube Type | Straight Tube / U Bend Tube |
| Delivery Condition | Hot Finished / Cold Drawn |
Available Types of T22 Tubes
ASTM A213 T22 Straight Tubes
Used in:
- boiler systems
- superheaters
- process piping
ASTM A213 T22 U Bend Tubes
Widely used in:
- heat exchangers
- condensers
- cooling systems
ASTM A213 T22 Boiler Tubes
Designed for:
- high-pressure boilers
- elevated temperature service
ASTM A213 T22 Condenser Tubes
Used in:
- cooling systems
- thermal exchange applications
ASTM A213 T22 Tube Size Range
| Specification | Range |
|---|---|
| Outside Diameter | 6.35 mm – 152.4 mm |
| Wall Thickness | 0.89 mm – 12 mm+ |
| Length | Random / Fixed Length |
| Tube Type | Seamless |
ASTM A213 T22 Stock Sizes
Available Outside Diameter (OD)
- 6.35 mm
- 9.52 mm
- 12.7 mm
- 15.88 mm
- 19.05 mm
- 25.4 mm
- 31.75 mm
- 38.1 mm
- 50.8 mm
- 63.5 mm
- 76.2 mm
- 88.9 mm
- 101.6 mm
- 152.4 mm
Available Wall Thickness (WT)
- 0.89 mm
- 1 mm
- 1.24 mm
- 1.5 mm
- 2 mm
- 2.5 mm
- 3.05 mm
- 5 mm
- custom thicknesses available
Equivalent Standards of ASTM A213 T22
| Standard | Equivalent Grade |
|---|---|
| ASTM | ASTM A335 P22 |
| EN | EN 10216-2 |
| DIN/WNr | 1.7386 |
| UNS | K21590 |
| GOST | GOST 550-75 |
Equivalent materials may vary depending on project specifications.
Chemical Composition of ASTM A213 T22 Tubes
| Element | Requirement (%) |
|---|---|
| Carbon (C) | 0.05 – 0.15 |
| Manganese (Mn) | 0.30 – 0.60 |
| Phosphorus (P) | ≤ 0.025 |
| Sulfur (S) | ≤ 0.035 |
| Silicon (Si) | ≤ 0.50 |
| Chromium (Cr) | 1.90 – 2.60 |
| Molybdenum (Mo) | 0.87 – 1.13 |
The chromium and molybdenum content provides:
- oxidation resistance
- creep resistance
- high-temperature strength
Mechanical Properties of ASTM A213 T22 Tubes
| Property | Requirement |
|---|---|
| Tensile Strength | ≥ 415 MPa |
| Yield Strength | ≥ 220 MPa |
| Elongation | ≥ 30% |
| Hardness | ≤ 85 HRB |
These mechanical properties ensure reliable service under:
- high temperature
- high pressure
- thermal cycling conditions
Heat Treatment Requirements of T22 Tubes
| Grade | Heat Treatment | Minimum Tempering Temperature |
|---|---|---|
| T22 | Full or Isothermal Anneal / Normalize & Temper | 1250°F [675°C] |
Heat treatment improves:
- grain structure
- toughness
- creep resistance
- high-temperature performance
Why Use ASTM A213 T22 Tubes?
T22 alloy steel tubes provide:
- excellent high-temperature performance
- superior creep resistance
- good oxidation resistance
- reliable pressure strength
These characteristics make T22 one of the most widely used alloy steel grades for:
- boilers
- heat exchangers
- refinery heaters
- power plant systems
Manufacturing Process of ASTM A213 T22 Tubes
ASTM A213 T22 tubes are manufactured using:
- seamless hot finished process
- cold drawn seamless process
Typical manufacturing process includes:
- steel melting
- piercing
- hot rolling
- cold drawing
- heat treatment
- straightening
- inspection
Strict quality control ensures:
- dimensional accuracy
- wall thickness consistency
- pressure resistance
Quality Control of ASTM A213 T22 Tubes
Steelmaking
The steel shall be:
- fully killed steel
Tube Manufacturing
Tubes shall be manufactured by:
- seamless process
Heat Treatment
Heat treatment shall be performed separately after forming according to ASTM A213 requirements.
Testing and Inspection
ASTM A213 T22 tubes may undergo:
- flattening test
- flaring test
- hydrostatic testing
- nondestructive electric testing
- ultrasonic testing (UT)
- eddy current testing (ET)
Optional testing includes:
- hardness testing
- PMI testing
- dimensional inspection
Flattening Test of T22 Tubes
One flattening test shall be performed on:
- specimens from each lot
- finished tubes
This test verifies:
- ductility
- structural integrity
Flaring Test of T22 Tubes
Flaring tests are conducted to verify:
- tube formability
- resistance to cracking
Hydrostatic & Nondestructive Testing
Each tube shall undergo:
- hydrostatic testing
or - nondestructive electric testing
according to ASTM A213 requirements.
Available NDT methods:
- ET (Eddy Current Testing)
- UT (Ultrasonic Testing)
- HT
- PT
Applications of ASTM A213 T22 Tubes
Power Generation Plants
Used in:
- superheaters
- reheaters
- boiler systems
Petrochemical Industry
Applied in:
- refinery heaters
- process heat exchangers
Heat Transfer Systems
Suitable for:
- condensers
- heat exchangers
- cooling systems
High Temperature Pressure Systems
Used in:
- elevated temperature piping
- steam systems
Their excellent creep resistance makes T22 tubes ideal for long-term high-temperature service.
ASTM A213 T22 vs T11 vs T12 Tubes
| Property | T11 | T12 | T22 |
|---|---|---|---|
| Chromium Content | Lower | Lower | Higher |
| Molybdenum Content | Lower | Lower | Higher |
| High Temperature Strength | Good | Good | Excellent |
| Typical Service | Medium Temp | Medium Temp | Higher Temp |
T22 tubes provide superior high-temperature performance compared with T11 and T12 grades.
Example Ordering Information
Product: Seamless Alloy Steel Tube
Standard: ASTM A213 / ASME SA213
Grade: T22 (2.25Cr–1Mo)
Outside Diameter: 50.8 mm (2”)
Wall Thickness: 5 mm
Length: 6000 mm
Manufacturing Process: Cold Drawn Seamless
Heat Treatment: Normalized and Tempered
Delivery Condition: Hardness ≤ 225 HB
Quantity: 800 PCS
Inspection: EN 10204 3.1 MTC
Download ASTM A213 T22 Tube Specification PDF
The ASTM A213 T22 specification PDF typically includes:
- dimensions
- chemical composition
- mechanical properties
- heat treatment requirements
- testing standards
- inspection requirements
Download ASTM A213 T22 Tubes specification
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