Main Types & Standards for Seamless Steel Boiler Tube
| Type | Applicable Standard | Operating Conditions | Common Materials |
| Low/Medium-Pressure Boiler Tubes | GB/T 3087-2022, ASTM A106 | ≤ 450°C, ≤ 5.9 MPa | 10#, 20# carbon steel |
| High-Pressure Boiler Tubes | GB/T 5310-2023, ASTM A192, ASME SA210 | > 450°C, > 5.9 MPa | 20G, 12Cr1MoVG, SA-210C |
| Superheater/Reheater Tubes | ASTM A213, EN 10216-2 | Up to 650°C (ultra-supercritical) | T91, T92, 1Cr18Ni9 |
International Standards Comparison for Seamless Steel Boiler Tubes
|
Application |
China (GB) |
USA (ASTM/ASME) |
Europe (EN) |
Typical Service Conditions |
|
Low/Medium-Pressure Boiler Tubes |
GB/T 3087-2022 |
ASTM A106/A106M |
EN 10216-2 |
≤ 450°C, ≤ 5.9 MPa |
|
High-Pressure Boiler Tubes |
GB/T 5310-2023 |
ASTM A192/A192M |
EN 10216-2 |
> 450°C, > 5.9 MPa |
|
Alloy Steel Boiler Tubes |
GB/T 5310-2023 |
ASTM A213/A213M |
EN 10216-2 |
Up to 650°C |
|
Stainless Steel Heat Exchanger Tubes |
GB/T 14976-2012 |
ASTM A269/A269M |
EN 10217-7 |
Corrosive environments |
|
Carbon-Molybdenum Steel Tubes |
GB/T 5310-2023 |
ASTM A209/A209M |
EN 10216-2 |
400–500°C |
Material-Temperature Grade Matching Guide
| Material Grade | Standard | Max Service Temperature | Key Properties | Typical Applications |
| 20G / 20# Carbon Steel | GB/T 3087-2022 | ≤ 450°C | Good weldability, moderate strength | Low/medium-pressure boilers, economizers |
| ASTM A192 / SA210-A1 | ASTM A192M | ≤ 480°C | Medium-carbon seamless steel, high thermal conductivity | High-pressure boiler tubes, water walls |
| 12Cr1MoVG / 13CrMo4-5 | GB/T 5310-2023 EN 10216-2 | ≤ 580°C | Chromium-molybdenum alloy, excellent creep resistance | Reheaters, superheaters, headers |
| ASTM A213 T91 / X10CrMoVNb9-1 | ASTM A213M | ≤ 600–620°C | High-chromium ferritic steel, superior strength at high temp | Ultra-supercritical boiler superheaters |
| ASTM A213 T92 / NF616 | ASTM A213M | ≤ 650°C | Advanced 9%Cr steel, high oxidation & creep resistance | Advanced ultra-supercritical units |
| TP304H / 1Cr18Ni9 | ASTM A213M GB/T 5310-2023 | ≤ 700°C | Austenitic stainless steel, excellent corrosion resistance | High-temp superheaters, nuclear heat exchangers |
| TP347H / 1Cr18Ni11Nb | ASTM A213M | ≤ 750°C | Niobium-stabilized stainless steel, resists intergranular corrosion | Final-stage superheaters, high-stress zones |
Manufacturing Process Of Seamless Steel Boiler Tube
★Billet Heating & Piercing: A solid round steel billet is heated and pierced to form a hollow shell.
★Hot Rolling or Cold Drawing: The shell is elongated and sized through precision rolling or drawing to achieve the desired dimensions.
★Heat Treatment: Tubes undergo annealing, normalizing, or tempering to optimize microstructure and mechanical properties.
★Testing & Inspection:
Each tube is subjected to:
1.Hydrostatic pressure test.
2.Eddy current or ultrasonic flaw detection.
3.Dimensional and surface quality checks.
Global Applications
★Power Generation: Main steam pipes, superheater tubes in coal-fired, gas-fired, and nuclear power plants.
★Petrochemical Industry: Furnace tubes, reformer tubes, and heat exchangers in refineries.
★Industrial Boilers: Used in textile, paper, food processing, and district heating systems.
★Marine & Shipbuilding: Steam propulsion systems and auxiliary boilers on ships.
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