Xi'an Dongmeng Group Co., Ltd. is one of the most reliable manufacturers and suppliers of ASTM A376 Stainless Steel Pipe in China, also supports customized service. With abundant experience, we warmly welcome you to wholesale cheap products in stock here and get free sample from our factory. For price consultation, contact us.
ASTM A376 stainless steel pipe is a premium-grade seamless austenitic stainless steel pipe engineered for high-temperature and high-pressure service environments, such as boilers, superheaters, and power plant piping systems.
Manufactured to meet strict creep strength and stress rupture requirements, ASTM A376 pipes provide exceptional long-term stability under continuous thermal exposure, outperforming conventional standards like ASTM A312 in critical applications.
Available in TP304H, TP316H, TP321H, and TP347H, these pipes are widely used in energy, petrochemical, and industrial heat transfer systems, where reliability and durability are essential.
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ASTM A376 Pipe Supplier & Manufacturer
We are a professional ASTM A376 stainless steel pipe supplier offering:
Factory direct pricing
Custom sizes & specifications
Fast global delivery
OEM & project supply support
ASTM A376 Pipe Specifications
| Item | Details |
|---|---|
| Standard | ASTM A376 / A376M |
| Type | Seamless |
| OD | 10.3 – 762 mm |
| WT | 1 – 50 mm |
| Length | Random / Fixed |
| Process | Hot rolled / Cold drawn |
ASTM A376 Pipe Sizes & Dimensions
| NPS | OD (mm / inch) | WT (mm / inch) | Schedule |
|---|---|---|---|
| 1/2" | 21.3 / 0.84" | 2.77–3.73 / 0.109–0.147" | SCH 40 / 80 |
| 1" | 33.4 / 1.315" | 3.38–4.55 / 0.133–0.179" | SCH 40 / 80 |
| 2" | 60.3 / 2.375" | 3.91–5.54 / 0.154–0.218" | SCH 40 / 80 |
| 6" | 168.3 / 6.625" | 7.11–10.97 / 0.28–0.432" | SCH 40 / 80 |
Products Chemical composition and physical properties
Industrial Applications of ASTM A376 Pipe
🔥 Power Generation
Superheater tubes
Steam pipelines
Boiler systems
🛢 Petrochemical Industry
Refinery piping
High-temperature reactors
Process pipelines
♨️ Heat Transfer Systems
Heat exchangers
Furnace tubes
Thermal fluid systems
Grades of Steel Covered
ASTM A376/A376M covers several common austenitic stainless steel grades, with the most prevalent being:
TP304H: The workhorse grade for high-temperature steam service. The "H" denotes a higher carbon content (0.04-0.10%) for improved high-temperature strength.
TP316H: Similar to 304H but with the addition of Molybdenum for better creep strength and corrosion resistance, particularly against chlorides.
TP321H: Stabilized with Titanium to prevent chromium carbide precipitation during welding and exposure to high temperatures, reducing susceptibility to intergranular corrosion.
TP347H: Stabilized with Niobium (and sometimes Tantalum) for excellent resistance to intergranular corrosion and very high creep strength.
| Grade | Features |
|---|---|
| TP304H | High temp strength |
| TP316H | Corrosion + creep resistance |
| TP321H | Anti intergranular corrosion |
| TP347H | Highest creep strength |
Other grades like TP304, TP316, TP321, and TP347 (non-"H" versions with lower carbon) are also included but are less common for the most critical high-temperature services.
Requirements and Features
Seamless Manufacturing: All pipe supplied to this standard must be seamless, meaning it is pierced from a solid billet. This eliminates the longitudinal weld seam found in welded pipe (like ASTM A312), which is a potential point of failure under extreme cyclic conditions.
High-Temperature Properties: The standard places a strong emphasis on properties important at high temperatures:
Creep Strength: The ability to resist deformation over long periods under stress and high heat.
Stress Rupture Strength: The ability to withstand fracture under constant load at high temperatures.
Oxidation Resistance: The formation of a stable chromium oxide layer that protects the metal from further degradation.
Heat Treatment (Solution Annealing): All pipes must be heat treated (solution annealed) and rapidly quenched to dissolve carbides and achieve a homogeneous austenitic structure. This is crucial for maximizing corrosion resistance and mechanical properties.
Hydrostatic Testing: Each pipe must undergo a non-destructive hydrostatic test. The test pressure is calculated to induce a stress in the pipe wall equal to a specified percentage of the steel's minimum yield strength.
Non-Destructive Examination (NDE): The standard requires eddy current or ultrasonic testing as a minimum. This is to ensure the internal and external soundness of the pipe and to detect any imperfections that could lead to failure.
Chemical Composition and Mechanical Properties: The standard has strict limits on chemical composition (Carbon, Chromium, Nickel, etc.) and room-temperature mechanical properties (Tensile Strength, Yield Strength, Elongation) to ensure material consistency and performance.
ASTM A376 vs ASTM A312 vs ASTM A213
| Standard | Type | Application | Strength Level |
|---|---|---|---|
| ASTM A376 | Seamless | High temperature piping | ⭐⭐⭐⭐⭐ |
| ASTM A312 | Seamless/Welded | General piping | ⭐⭐⭐ |
| ASTM A213 | Tube | Heat exchanger | ⭐⭐⭐⭐ |
A376 vs A312
A376 vs A213
Inspection & Quality Assurance
We implement strict quality assurance systems:
100% PMI (Positive Material Identification)
Ultrasonic Testing (UT)
Eddy Current Testing (ECT)
Hydrostatic Pressure Testing
Third-party inspection (SGS / BV / TUV)
Product Delivery Standards
International export packaging (wooden cases / bundles)
Anti-rust protection
Marking: Heat No. / Grade / Size
Delivery time: 7–25 days
Shipping: Sea / Air / Land
Why Choose Our ASTM A376 Pipe
Direct factory supply (no middleman)
Competitive price for bulk orders
Stable quality for EPC projects
Fast delivery for urgent projects
Global export experience (50+ countries)
Contact Us – ASTM A376 Stainless Steel Pipe Supplier
Looking for a reliable ASTM A376 stainless steel pipe manufacturer and supplier?
Our team provides professional solutions for high-temperature and high-pressure piping projects worldwide.
We support power plants, boiler systems, petrochemical plants, and industrial engineering projects with stable quality and fast delivery.
📞 Get a Quote Today
We offer:
Fast quotation within 24 hours
Custom size & specification support
OEM & project-based supply
Competitive factory pricing
🌍 Contact Information
📞 Phone / WhatsApp / WeChat: +8615769214734
📧 Email: office@dongmjd.com
📍 Service: Global Export (50+ Countries)
Send us your inquiry with:
Material grade (TP304H / TP316H / etc.)
Size & thickness
Quantity
Application
We will reply with best price + technical solution immediately.
Frequently Asked Questions about ASTM A376 Stainless Steel Pipe Supplier & Manufacturer
1. What is ASTM A376 stainless steel pipe?
ASTM A376 stainless steel pipe is a seamless austenitic stainless steel pipe designed for high-temperature and high-pressure applications, especially in boilers, superheaters, and power plant systems.
2. What is ASTM A376 pipe used for?
ASTM A376 pipes are widely used in:
Power plant piping systems
Boiler and superheater tubes
Heat exchangers
Petrochemical processing plants
3. Is ASTM A376 pipe seamless or welded?
ASTM A376 pipes are 100% seamless, ensuring:
Higher pressure resistance
No weld defects
Better performance in extreme environments
4. What grades are available in ASTM A376 pipe?
Common grades include:
TP304H
TP316H
TP321H
TP347H
These grades are specifically designed for high-temperature strength and oxidation resistance.
5. What is the difference between ASTM A376 and ASTM A312?
The main difference is application:
ASTM A376 → High-temperature service (boilers, power plants)
ASTM A312 → General corrosion-resistant piping
ASTM A376 offers better creep strength and long-term thermal stability.
6. What temperature can ASTM A376 pipes withstand?
ASTM A376 pipes are suitable for high-temperature environments typically above 500°C, depending on the material grade and working conditions.
7. What sizes are available for ASTM A376 pipes?
ASTM A376 pipes are available in:
Outer Diameter: 10.3 mm – 762 mm
Wall Thickness: 1 mm – 50 mm
Length: Random or fixed
Custom sizes are available upon request.
8. Can ASTM A376 pipes be customized?
Yes, we support:
Custom dimensions
Special grades
Project-based production
OEM & bulk supply
9. How is ASTM A376 pipe tested for quality?
All ASTM A376 pipes undergo strict testing, including:
PMI (Positive Material Identification)
Ultrasonic Testing (UT)
Eddy Current Testing
Hydrostatic Pressure Testing
Third-party inspection (SGS / BV / TUV) is available.
10. Do you provide international shipping?
Yes, we provide global export services, including:
Seaworthy packaging
Fast delivery (7–25 days)
Worldwide logistics support
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