ASTM A213 Seamless Alloy Steel Tubes | High-Temperature & Corrosion Resistant
Huagang Industrial supplies ASTM A213 seamless alloy steel tubes for boilers, heat exchangers & superheaters. High-temperature & corrosion resistant. Available in T5, T9, T11, T12, T22, T91, T92 grades. ISO/TS 16949 certified. Request a quote today!
Product Info
ASTM A213 Seamless Alloy Steel Tubes for Boiler, Superheater and Heat Exchanger
Zhangjiagang Huagang Industrial Co., Ltd. specialises in manufacturing high-performance ASTM A213 seamless alloy steel tubes, engineered for critical applications in high-temperature and corrosive environments. Our tubes are widely used in boilers, superheaters, and heat exchangers across power generation, petrochemical, and automotive industries.
Key Features and Benefits of ASTM A213 Alloy Tubes
Excellent High-Temperature Resistance: Offers superior resistance to oxidation and thermal shock, ensuring long-term stability under extreme heat.
Superior Corrosion Resistance: Alloying elements like chromium and molybdenum provide outstanding resistance to corrosion in harsh environments.
High Strength and Durability: Designed to withstand high pressure and temperature conditions, ensuring reliable performance and structural integrity.
Seamless Construction: Provides uniform wall thickness, enhanced structural integrity, and leak-proof performance, free from weld-related defects.
Strict Quality Control: Every batch undergoes rigorous chemical analysis, mechanical testing, and non-destructive testing (NDT) to meet international standards.
Manufacturing Process and Quality Assurance
Our ASTM A213 tubes are manufactured using state-of-the-art processes:
Seamless Manufacturing: Utilising piercing, hot rolling, and cold drawing (if required) to ensure a uniform structure without seams.
Heat Treatment: All tubes undergo precise heat treatment (normalising, tempering) to achieve optimal microstructure, relieve stresses, and enhance mechanical properties.
Precise Dimensional Control:
Hot-rolled Tubes (OD ≤ 101.6mm): Tolerance +0.4mm/-0.8mm
Cold-drawn Tubes (OD < 25.4mm): Tolerance ±0.10mm
Comprehensive Testing:
Chemical Composition Analysis
Mechanical Testing (Tensile, Hardness)
Non-Destructive Testing (Ultrasonic, Eddy Current)
Hydrostatic Testing
Surface Quality Inspection
Available Sizes and Dimensions
NPS Range: 1/8" to 24" (DN6 to DN1200)
Wall Thickness: Schedules 40 through 160, STD, XS, XXS, and custom heavy walls up to 4 inches.
Length: Standard 6m or 12m, random lengths also available.
Detailed size tables for OD and wall thickness tolerances are available upon request.
Main Application Areas
Boiler Tubes: For superheaters, reheaters, economizers, and water wall panels in low-, medium-, and high-pressure boilers.
Heat Exchanger Tubes: Ideal for shell and tube heat exchangers in petrochemical, power, and pharmaceutical industries.
Superheater Tubes: Used to convert saturated steam into superheated steam in power plants.
Other High-Temperature Services: Applicable in various industrial heating and processing systems.
Why Choose Huagang Industrial?
20+ Years of Expertise: A proven leader in precision seamless steel tube manufacturing since 2006.
Certified Quality: Holder of ISO/TS 16949:2009 and National Special Pressure Equipment Manufacturing License.
Advanced Facility: Integrated R&D, production, and testing capabilities to ensure top-tier product quality.
Global Clientele: Trusted supplier to globally recognized brands including BMW, Volvo, Tesla, Toyota, and Volkswagen.
Packaging, Marking & Delivery
Packaging: Bundled (hexagonal), Wooden Boxes, Crates (steel/wooden), or as per customer requirements to prevent damage in ordinary handling and transportation.
Marking: Clearly marked with Standard, Steel Grade, Size, Heat No., and Lot No. for full traceability.
Port of Shipment: Shanghai, China
Payment Terms: T/T (Telegraphic Transfer), L/C (Letter of Credit)
Product Properties
Chemical Composition (Key Grades)
Grade | C (%) | Mn (%) | P (%) Max | S (%) Max | Si (%) | Cr (%) | Mo (%) |
T5 | ≤ 0.15 | 0.30-0.60 | 0.025 | 0.025 | ≤ 0.50 | 4.00-6.00 | 0.45-0.65 |
T9 | ≤ 0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.25-1.00 | 8.00-10.00 | 0.90-1.10 |
T11 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | 0.50-1.00 | 1.00-1.50 | 0.44-0.65 |
T12 | 0.05-0.15 | 0.30-0.61 | 0.025 | 0.025 | ≤ 0.50 | 0.80-1.25 | 0.44-0.65 |
T22 | 0.05-0.15 | 0.30-0.60 | 0.025 | 0.025 | ≤ 0.50 | 1.90-2.60 | 0.87-1.13 |
T91 | 0.07-0.14 | 0.30-0.60 | 0.020 | 0.010 | 0.20-0.50 | 8.00-9.50 | 0.85-1.05 |
Mechanical Properties
Grade | Tensile Strength (Min) | Yield Strength (Min) | Elongation (Min) | Hardness (Max) |
T5 | 415 MPa | 205 MPa | 30% | 163 HBW |
T9 | 415 MPa | 205 MPa | 30% | 179 HBW |
T11 | 415 MPa | 205 MPa | 30% | 163 HBW |
T12 | 415 MPa | 220 MPa | 30% | 163 HBW |
T22 | 415 MPa | 205 MPa | 30% | 163 HBW |
T91 | 585 MPa | 415 MPa | 20% | 250 HBW |
Technological Advantages & Quality Control
Technological Advantages
With nearly two decades of expertise, Huagang is recognised as a top precision seamless steel tube manufacturer. We integrate R&D, production, quality management, logistics, and global customer service, enabling customers to secure stable supply and consistent product performance.
Our long-term partnerships with global brands demonstrate our capability to meet rigorous quality expectations.
Adopting cold drawn precision seamless technology to ensure high dimensional accuracy, smooth surface, and uniform wall thickness of steel tubes.
After heat treatment and surface treatment, the mechanical properties and corrosion resistance of the steel tube are further improved.
Adopting cold drawn precision seamless technology to ensure high dimensional accuracy, smooth surface, and uniform wall thickness of steel tubes. | After heat treatment and surface treatment, the mechanical properties and corrosion resistance of the steel tube are further improved. |
Delivery Status:
Designation | Symbol | Description |
Cold drawn / hard | +C (BK) | After the last cold forming no heat treatment. |
Cold drawn / soft | +LC (BKW) | After the last heat treatment, follows the cold drawing there is a light finishing pass. |
Cold drawn and stress relieved annealed | +SR (BKS) | After the final cold drawing process, the tubes are stress-relieved and annealed in a controlled atmosphere. |
Annealed | +A (GBK) | After the last cold drawing process, the tubes are annealed in a controlled atmosphere. |
Normalized | +N (NBK) | After the last cold drawing process, the tubes are normalized in a controlled atmosphere. |
Quality Control
Check Each One Individually Hydraulic test: Each steel tube undergoes a hydraulic test to ensure good sealing and pressure bearing capacity in high-pressure environments. Non destructive testing: Using ultrasonic, eddy current, or magnetic flux leakage testing techniques to detect internal defects in steel tubes and ensure product quality. | Testing Standards Compliant with international standards such as GB/T 8163, GB/T 3087, GB/T 5310, DIN, JIS, EN, ASTM, etc. Each batch of products comes with detailed quality inspection reports and certificates of conformity. | Certification Guarantee Obtained ISO/TS16949:2009 quality system certification and obtained the national special equipment pressure pipeline component manufacturing license. |
