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ASME SA213 TP304 Stainless Steel Seamless Tube For Boiler
ASME SA213 TP304 (UNS S30400) is an austenitic stainless steel seamless tube standard specifically designated for boiler, superheater, and heat exchanger service. This specification covers minimum-wall-thickness tubes operating in high-temperature, high-pressure environments where corrosion resistance and mechanical integrity are critical.
Yuhong Group Co., Ltd. supplies ASME SA213 TP304 seamless tubes with full material traceability and third-party inspection support (ABS, DNV, BV, PED, GOST). With over 25 years in austenitic stainless steel and nickel alloy tube manufacturing, we maintain particular expertise in boiler tube applications where grain size control and solution annealing parameters directly influence service life.
Intergranular corrosion test - when specified in purchase order
Critical Manufacturing Considerations
Solution annealing temperature must reach a minimum of 1040 °C to ensure complete carbide dissolution and optimal corrosion resistance
Rapid cooling (water quench) is essential to prevent sensitization and maintain intergranular corrosion resistance
Cold finishing provides tighter dimensional tolerances: ±0.10 mm for OD < 25.4 mm, ±0.15 mm for 25.4-38.1 mm
Supplementary Manufacturing Capability
Yuhong Group offers integrated manufacturing support for complete heat exchanger and boiler tube assemblies:
Component / Service
Capability / Grade Availability
U-Bend Tubes
Custom radius, up to 15.24 m leg length
Tube Bundles
Complete assembly with tube sheets and baffles
Tube Sheets
Carbon steel, stainless steel, alloy grades
Baffles / Support Plates
Custom drilling and machining
Finned Tubes
Enhanced surface area for heat transfer efficiency
Head / Channel
Pressure vessel components
MTC Certification
EN 10204 3.1 or 3.2 with TPI (BV, SGS, DNV, ABS)
The company supplies complete pressure part assemblies with material compatibility across all heat exchanger components, ensuring consistent metallurgical and dimensional coordination.
Dimensional Scope (ASME SA213)
Parameter
Range
Outside Diameter
3.2 mm - 127 mm (1/8″ - 5″)
Wall Thickness
0.4 mm - 12.7 mm (0.015″ - 0.500″) minimum wall
Length
Custom up to 32 meters (straight); U-bend available
Per ASME SA213 specification - sizes outside this range may be furnished with special agreement
Application Scope
ASME SA213 TP304 seamless tubes are specified for:
Boiler tubes - water-tube and fire-tube boiler superheater sections
Heat exchangers - shell-and-tube, U-tube, and fixed-tube-sheet designs
Condensers - steam surface condensers and auxiliary systems
Pressure vessels - internal tubing in high-temperature service
Petrochemical plants - process heaters and reformer tubes
Power generation - conventional and combined-cycle plants
Refinery service - crude and vacuum unit heat transfer
Temperature limitation: Intermittent service to 870 °C; continuous service to 920°C (reduced oxidation resistance above 800°C)
Frequently Asked Technical Questions
How does TP304 differ from TP304L for boiler service?
The carbon content difference is the key: TP304 has 0.08% max C (higher strength at elevated temperatures), while TP304L has 0.035% max C (better weldability). For boiler applications above 525°C, TP304 is preferred because the carbon content contributes to high-temperature creep strength; 304L may not meet the minimum strength requirements at elevated temperatures.
What is the solution annealing temperature specified for SA213 TP304?
ASME SA213 requires solution treatment at a minimum temperature of 1040°C (1900°F), followed by rapid cooling (water or other rapid quench media) to maintain corrosion resistance and prevent sensitization.
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
Yuhong Group is one of the large scale group company in China, more than 35 years experience in the international market, providing high-quality services to over 3000 customers, end user which like Aramco, Petrobras, Pemex, Petronas, Ecopetro, Petroecuador, …. till now Yuhong Grou...
