astm a213 tp304 tube
2. Standard: ASTM A213 / ASME SA213, standard specification for seamless boiler, superheater, and heat-exchanger tubes
3. Process: Advanced multi-pass precision cold drawing or cold rolling to ensure dense grain structure and zero weld risks
4. Size Range: Outer Diameter from 3.18mm to 127mm (1/8" to 5") with strictly calibrated wall thickness profiles
5. Heat Treatment: Homogeneous solution annealing followed by rapid quenching to optimize physical material flexibility
6. Surface Finish: Clean uniform pickled matte, high-purity bright annealed (BA), or exterior mechanical polished
7. Application: High-temperature boiler connection loops, industrial superheaters, condensers, and thermal vapor lines
8. Service Advantage: Dynamic eddy current and hydrostatic testing, low MOQ for custom sizes, and quick shipping dispatch
9. Packaging: Bundled securely with heavy-duty metal strapping or packed into protective seaworthy plywood crates
10. Key Advantage: Exceptional heat transfer efficiency paired with elevated pressure-bearing capability under prolonged heating
ASTM A213 TP304 Tube - Premium Seamless Boiler & Heat Exchanger Solution for High-Pressure Thermal Systems
Hebei All Trust Steel Co., Ltd manufactures astm a213 tp304 tube engineered for critical thermal applications in power generation, petrochemical processing, and heat exchange systems. Our seamless TP304 tubes have an annual manufacturing capacity of more than 15,000 tons, 100% hydraulic testing rate and provide excellent pressure containment and thermal stability. All products have a comprehensive solution annealing and eddy current examination. Dense grain structures capable of withstanding service temperatures up to 870°C. Tolerant to ±0.05mm, our precision cold-drawing technology does not have the vulnerability of welds, and can be performed for outer diameters of 3.18mm to 127mm with confirmed wall thickness profiles.
What is ASTM A213 TP304 Tube?
This is a high performance standard for seamless austenitic stainless steel for use in boilers, superheaters and heat exchangers. This grade has a chromium concentration of 18 to 20 percent and nickel of 8 to 11 percent for better oxidation resistance and mechanical strength.
These tubes are not sized by NPS and Schedule as is typical plumbing, but by exact OD and wall thickness parameters. Seamless manufacturing process avoids longitudinal weld seam and hence avoids stress concentration spots in the high pressure heat environment.
The austenitic microstructure of TP304 maintains outstanding toughness at cryogenic temperatures. The material is not subject to embrittlement in high temperature steam systems and liquefied gas applications, providing flexibility of usage.
Technical Specifications & Parameters
| Parameter | Specification |
|---|---|
| Standard | ASTM A213 / ASME SA213 / EN 10216-5 |
| Material Grade | TP304 (UNS S30400 / 1.4301) |
| Manufacturing Process | Cold Drawn / Cold Rolled / Solution Treated |
| Outer Diameter | 3.18 mm – 127 mm (1/8" – 5") |
| Wall Thickness | 0.38 mm – 12.7 mm (0.015" – 0.500") |
| Length Options | 5.8 m / 6 m / 11.8 m / 12 m / Custom |
| Surface Finish | Pickled / Bright Annealed (BA) / Mechanical Polished |
| Tensile Strength | ≥ 515 MPa (75 ksi) |
| Yield Strength | ≥ 205 MPa (30 ksi) |
| Hardness | ≤ 192 HBW / 90 HRB |
| Service Temperature | Up to 870°C (1600°F) |
| Testing Methods | Eddy Current / Ultrasonic / Hydrostatic / PMI |
| Certificates | EN 10204 3.1 & 3.2 MTC / ISO 9001:2015 |
| Third-Party Inspection | SGS / BV / TÜV / DNV Supported |
Chemical Composition
| Element | Content (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Silicon (Si) | ≤ 0.75 |
| Chromium (Cr) | 18.0 – 20.0 |
| Nickel (Ni) | 8.0 – 11.0 |
Core Manufacturing Advantages
Seamless Precision Engineering
Our multi-pass cold-drawing process guaranties a regular distribution of the wall thickness and no longitudinal welds. Seamless design avoids failure areas under cyclic thermal stress and high pressure steam exposure.
Rigorous Quality Check
All manufacturing lots are subjected to rigorous mechanical tests such as flaring, flattening and tensile tests. We use a 100% eddy current examination to identify sub-surface faults as tiny as 0.1 mm, maintaining the structural integrity of the tube throughout its service life.
Flexibility in customisation
We provide for unique needs for thick wall superheater systems and extra lengths to 12 metres. Our laser cutting and bevelling services prepare tubes for quick installation, decreasing on-site manufacturing time by up to 40%.
Full Traceability Documentation
Every shipment contains EN 10204 3.1/3.2 Mill Test Certificates with complete heat number traceability. Our PMI reports reveal correct chemical composition and mechanical test data proves conformity with ASTM A213 grain size specifications.
Industrial Applications
Power Generation Systems
TP304 is resistant to steam-side oxidation making it well suited for superheater and reheater tubes in coal-fired, biomass and combined cycle facilities. The astm a213 tp304 tube can withstand the variable load circumstances and provide the structural stability for effective heat transmission in convection sections.
Heat Exchange Petrochemical
This material is used for its resistance to sulphur compounds and organic acids for shell-and-tube heat exchangers that handle corrosive process streams. Its non-reactive surface helps to avoid contamination in refinery desalting units and catalytic cracker circuits.
Food and Pharma Processing
The hygienic qualities of the tube are obtained using high temperature sterilisation devices and evaporation systems. The smooth, pickled surface resists harsh CIP chemicals and several heat shock cycles and prevents bacterial adherence.
Cryogenic Applications
The toughness preserved by TP304 at sub-zero temperatures is exploited in liquefied natural gas (LNG) vaporisers and cold boxes. Due to the austenitic nature of the material, brittle fracture is avoided in conditions down to -196°C.
Quality Assurance Process
Raw Material Verification
Content of chromium, nickel and carbon is confirmed spectrographically before manufacture. “We only buy from ISO certified mills with documented heat treatment procedures.
Process Control
Cold drawing provides real-time dimensional inspection to maintain API tolerances on OD and wall thickness. Solution annealing parameters are documented continually to maintain consistent grain refinement.
Final Inspection Procedure
The leak-proof performance is verified by a hydrostatic test at 1.5 times the design pressure. Ultrasonic test is used to discover internal discontinuities and visual inspection is used to certify that the surface quality is in accordance with ASTM A213 requirements.
Documentation Bundle
Complete material traceability include chemical composition reports, mechanical properties certificates and non-destructive testing records. This paperwork assists project compliance audits and regulatory authorisations.
Packaging & Global Logistics
Protective Packaging Standards
The tubes are wrapped in waterproof material and sealed at both ends in plastic to keep moisture out. Hexagonal bundles are strapped with heavy strength metal straps. Polished surfaces are protected by fumigated plywood containers for ocean freight.
Strategic Ports
We deal with exports from Shanghai, Ningbo, Tianjin and Qingdao on flexible terms of FOB, CFR, CIF and DDP. Mixed container loading combines tubes with fittings and flanges to optimise freight costs for delivery of entire systems.
Fast Turnaround Times
Stock orders ship within 3-5 days from our 5,000-ton inventory. Custom specifications require 15-20 days, with expedited 35% faster production available for urgent projects.
FAQ
Q：What defines the foundational pressure containment capability of this product inside boiler environments?
A：This seamless pressure tube carries full boiler and pressure vessel code compatibility, providing definitive metallurgical endurance and high pressure-bearing safety margins under fluctuating mechanical stress boundaries.
Q：Why is a seamless manufacturing path mandatory for this specific thermal utility grade?
A：The extrusion-formed seamless body provides a fully uniform, joint-free cylindrical wall profile, entirely eliminating weld line vulnerabilities and localized thermal stress fractures under severe steam power loops.
Q：What destructive quality verification benchmarks must this tube lot successfully pass at the mill?
A：Representative production coupons undergo comprehensive mechanical testing including high-load tension diagnostics, flattening verification, cross-sectional flaring evaluations, and flange structural validation checks.
Q：What customized dimensional thickness profiles can be configured for high-heat superheaters?
A：We provide adaptable sizing structures for heavy-duty setups, supporting precise fractional or metric thicknesses, custom long lengths up to 12 meters, and tailored shot-blasted descaled finishes.
Q：What precise mill traceability documentation is dispatched with this astm a213 tp304 product?
A：We supply transparent Mill Test Certificates (MTC) in strict compliance with EN 10204 3.1 criteria, detailing exact chemical heat numbers, grain size configurations, and physical load values.
Q：Can the products be used at sub-zero temperatures?
A：Yes, TP304 maintains excellent toughness and impact strength at cryogenic temperatures, making it suitable for liquefied gas applications without risk of brittle fracture.
Q：How do you verify tube authenticity?
A：Request our Mill Test Certificate compliant with EN 10204 3.1, which tracks heat number, chemical analysis, and mechanical test results back to the original melt for complete traceability.
Contact Us
Hebei All Trust Steel delivers engineered tubing solutions backed by 15+ years of industry expertise and strategic mill partnerships with the astm a213 tp304 tube. Contact our technical team at info@hballtrust.com for material selection guidance and project-specific quotations.
