310S Seamless Pipe
2. Standard: ASTM A312, ASTM A213, ASME SA312, fully compliant with high-temperature codes
3. Process: Heavy-duty seamless hot piercing or cold drawing, ensuring uniform grain distribution
4. Size Range: NPS 1/8" to 24", Schedule 10S to Schedule 160 with robust wall thickness profiles
5. Heat Treatment: Solution annealing at 1040°C–1150°C followed by rapid cooling to prevent sigma phase
6. Surface Finish: Solution annealed and pickled (SA&P), industrial descaled, or sandblasted finish
7. Application: Furnace tubes, muffle furnaces, heat treatment equipment, and kiln liners up to 1100°C
8. Service Advantage: High alloy raw material traceability, 100% PMI testing, and short delivery cycles
9. Packaging: Hexagonal ocean bundles secured with heavy steel straps and thick plastic end caps
10. Key Advantage: Exceptional oxidation resistance under continuous high temperature, avoiding thermal scaling
310S Seamless Pipe – Premium Heat-Resistant Stainless Steel Solutions for High-Temperature Industrial Applications
Hebei All Trust Steel Co., Ltd specializes in manufacturing premium-grade 310S Seamless Pipe, an austenitic stainless steel with high chromium and nickel levels for use in harsh temperature conditions. Our plant has an annual capacity of over 15,000 tons and a maximum outside diameter of 1016 mm with a 100% hydraulic testing rate to ensure leak-proof functioning. Solution annealed 1040 – 1150°C, each product provides excellent resistance to oxidation and creep strength for continuous operation to 1100°C in furnace tubes, heat exchangers and petrochemical processing systems.
Why Choose Our Heat-Resistant 310S Seamless Pipe?
This specialised plumbing solution is designed to handle the crucial industrial requirements that regular stainless steel grades cannot. Seamless structure minimises weld-seam weaknesses that cause early failure with heat cycling.
It has high chromium (24-26%) and nickel (19-22%) contents which makes a protective oxide layer. This metallurgical composition is resistant to scaling and retains structural integrity in hostile settings. The result is extended equipment life and lower maintenance expenditures.
Our production technique is a combination of high duty seamless hot piercing and precise cold drawing. The combination of these two methods produces a consistent grain structure through the pipe wall. Each batch is subjected to specialised enhanced temperature tensile testing and grain boundary morphology examination.
Technical Specifications
| Parameter | Details |
|---|---|
| Material Grade | 310S (UNS S31008 / DIN 1.4845) |
| Manufacturing Standards | ASTM A312, ASTM A213, ASME SA312, EN 10216-5 |
| Production Process | Hot Finished / Cold Drawn / Cold Rolled |
| Outer Diameter Range | 1/4" – 24" (13.7 mm – 609.6 mm) |
| Wall Thickness Options | SCH 5S to SCH 160 (0.5 mm – 50 mm) |
| Standard Lengths | 5.8 m / 6 m / 11.8 m / 12 m / Custom Cut |
| Surface Finish | Solution Annealed & Pickled / Bright Annealed |
| End Configuration | Plain End (PE) / Beveled End (BE) |
| Tensile Strength | ≥515 MPa |
| Yield Strength | ≥205 MPa |
| Heat Treatment | Solution Annealing at 1040°C–1150°C |
| Testing Methods | Hydrostatic / Eddy Current / Ultrasonic / PMI |
| Quality Certificates | EN 10204 3.1/3.2 MTC, ISO 9001:2015 |
Superior Material Advantages for Extreme Environments
Your thermal processing equipment demands materials that won't compromise under stress. Our product delivers three critical performance benefits:
Material Composition Excellence: The ultra-high concentrations of chromium and nickel create a robust metallurgical shield. You get exceptional creep rupture strength that resists scaling up to 1150°C heat thresholds. This prevents costly equipment shutdowns caused by thermal degradation.
Seamless Structural Integrity: The extrusion-formed seamless body provides a fully uniform, joint-free cylindrical wall. This eliminates weld-decay risks entirely. You avoid localized mechanical structural shifting that occurs under intense thermal cycles with welded alternatives.
Rigorous Quality Validation: Beyond standard ultrasonic volumetric scanning, representative batch coupons undergo specialized elevated-temperature tensile testing. Detailed grain boundary morphology analysis ensures metallurgical safety. Your critical systems receive verified thermal performance documentation.
Customization Capabilities for Complex Industrial Requirements
We understand that standard specifications don't always match your engineering blueprints. Our technical team provides tailored solutions for demanding applications.
You can specify extra-heavy wall schedules including SCH 100, SCH 160, and custom high-thickness boundaries. Specialized shot-blasted descaled exterior finishes are available for enhanced surface characteristics.
Custom-bent configurations and segmented pipe assemblies accommodate complex furnace layouts. Our laser cutting and precision beveling services reduce your on-site fabrication time. Fixed-length cutting ensures zero material waste in your installation process.
Industrial Applications Across High-Temperature Sectors
This heat resistant pipe plays an important role in several industries:
Petrochemical Processing: Heat exchanger tubes, catalytic recovery systems and cracking tubes are used to process volatile hydrocarbon gases. The material resists corrosive substances that ruin lesser grades.
Industrial Thermal Treatment Annealing furnaces need thermal cycling resistance for radiant tubes, furnace muffles and burner nozzles. Our seamless structure eliminates the scaling problems that are prevalent with welded tubes.
Power production Systems: Superheater tubes and steam production equipment are subjected to combination high temperature and high pressure conditions. The higher creep strength provides dimensional stability for long service life.
Waste incineration facilities Gasifiers for biomass and thermal waste treatment systems expose pipelines to hot ash and complicated flue gas compositions. The high-alloy composition resists the effects of sulfidation and carburization.
Comprehensive Quality Control Process
Quality assurance begins at raw material selection and continues through final shipment for the 310S Seamless Pipe. You receive multiple verification layers:
Material Verification: Positive Material Identification (PMI) establishes the correct nickel-chromium ratio. Spectrographic examination shows all alloying elements within specification limits.
Non-Destructive Testing Eddy current testing reveals surface and near-surface defects. Volumetric soundness via ASTM E213 ultrasonic testing. Hydrostatic testing proves leak-proof performance at operational pressure.
Metallurgical Analysis: Grain size testing confirms optimal heat treatment effectiveness. Intergranular corrosion testing per ASTM A262 Practice E validates the low-carbon properties critical for weldability.
Mechanical Integrity: Flattening and flaring tests demonstrate ductility. High-temperature tensile tests verify strength retention at elevated temperatures.
Third-party inspection from SGS, BV, TÜV, or DNV is welcomed. You receive complete EN 10204 3.1 or 3.2 Mill Test Certificates with full material traceability.
Secure Export Packaging and Global Logistics
Your investment in premium materials deserves protection throughout international transit. Our export packaging system prevents damage from multiple environmental factors.
Plastic end caps seal pipe openings against moisture ingress. Individual protective sleeves prevent surface scratching during handling. Heavy-duty woven bundles secured with steel strapping maintain load stability.
Wooden cases fumigation-free and in accordance with ISPM-15 international phytosanitary requirements. This arrangement provides protection from salt corrosion in marine transportation and impact damage in intermodal transfer.
We ship from the main Chinese ports, such as Shanghai, Ningbo, Tianjing, Qingdao. Trade terms: FOB, CFR, CIF, DDP, according to your needs. Mixed container loading Pipes, fittings, flanges and valves are combined to optimise your logistics expenses.
FAQ
Q：What core alloying elements enable this pipe to endure extreme high-temperature processing lines?
A: This product is strong in chromium and nickel at ultra-high concentrations, creating a powerful structural barrier that sustains excellent creep rupture strength and resists scaling up to 1150°C heat thresholds.
Q：Why is seamless manufacturing critical for high-temperature applications?
A：The extrusion-formed seamless body provides a fully uniform, joint-free cylindrical wall, entirely eliminating weld-decay risks and localized mechanical structural shifting under intense thermal cycles.
Q：What elevated-temperature validation diagnostics guarantee metallurgical safety?
A：Beyond regular ultrasonic volumetric scanning, representative batch coupons undergo specialized elevated-temperature tensile testing and detailed grain boundary morphology analysis.
Q：What customized dimensional thickness options are available for severe industrial kiln blueprints?
A：We specialize in tailoring extra-heavy wall schedules including SCH 100, SCH 160, and custom high-thickness boundaries alongside specialized shot-blasted descaled exterior finishes.
Q: What is the difference between 310 and 310S?
A: 310S has a reduced carbon limit (0.08% max vs 0.25% in 310) to minimise sensitisation and increase weldability for high temperature service.
Contact Us
Ready to specify the right 310S Seamless Pipe for your high-temperature application? Our engineering team provides material selection guidance and corrosion resistance analysis. Contact info@hballtrust.com for detailed quotations and technical documentation.
