The ASTM A312 TP321 Stainless Steel Pipe, supplied by Jiangsu Cunrui Metal Products Co., Ltd., is an austenitic stainless steel pipe stabilized with titanium, providing excellent resistance to intergranular corrosion even after exposure to high temperatures. This grade is widely recognized for its superior oxidation resistance, reliable mechanical performance, and long service life in aggressive environments. Our A312 321 Pipe is manufactured under strict international standards, with each batch supported by material test certificates (MTC), inspection reports, and third-party certifications to ensure consistent quality and compliance.
Features & Advantages
Stabilized with titanium, minimizing the risk of carbide precipitation.
Superior resistance to oxidation and scaling up to 870°C (1600°F).
Enhanced performance in high-temperature and corrosive environments.
Supplied with EN 10204 3.1/3.2 certificates and third-party inspection if required.
High weldability and formability compared to non-stabilized grades.
Consistent dimensional accuracy due to advanced manufacturing technology.
Applications
The ASTM A312 TP321 Stainless Steel Pipe is widely applied in industries where corrosion and high temperature resistance are critical, such as:
Petrochemical & Refining: Heat exchangers, process piping, and catalytic equipment.
Power Generation: Boiler tubes, superheaters, reheaters, and exhaust systems.
Chemical Processing: Piping for acids, alkalis, and organic chemicals.
Aerospace & Automotive: High-performance exhaust and turbine components.
Construction & Marine: Structural piping in harsh environments.
Product Specifications & Technical Data
Basic information
|
Category |
Specification |
|
Standard |
ASTM A312 |
|
Grade |
TP321 |
|
Type |
Seamless,Welded |
|
Outside Diameter |
6 mm – 1200 mm (custom sizes available) |
|
Wall Thickness |
0.5 mm – 50 mm, SCH 5 to SCH 160 |
|
Length |
6 m standard; cut-to-length on request |
|
Tensile Strength |
≥ 515 MPa |
|
Yield Strength |
≥ 205 MPa |
|
Elongation |
≥ 35% |
|
Hardness |
HRB ≤ 95 |
|
Surface Finish |
Annealed & Pickled, Polished, Brushed, Custom |
Chemical Composition (Typical for TP321)
|
Element |
Content (%) |
|
C |
≤ 0.08 |
|
Mn |
≤ 2.00 |
|
P |
≤ 0.045 |
|
S |
≤ 0.030 |
|
Si |
≤ 1.00 |
|
Cr |
17.0 – 19.0 |
|
Ni |
9.0 – 12.0 |
|
Ti |
≥ 5 × C, ≤ 0.70 |
Customization Services
Tailored Dimensions: OD, WT, and length per project requirements.
Processing Services: Cutting, beveling, threading, bending, and welding.
Surface Treatment: Polishing, pickling, passivation, or protective coating.
Alternative Materials: TP304, TP304L, TP316, TP347, and duplex grades.
Flexible MOQ: From trial orders to bulk quantities, with fast production cycles.
Price & Lead Time
We provide competitive pricing with bulk order discounts. Standard sizes of A312 321 Pipe are available in stock for immediate shipment, while customized production typically requires 7–20 working days depending on order volume.
Our Strength
Factory Capacity: Modern manufacturing facility with advanced welding and polishing lines.
Annual Output: Over 60,000 tons of stainless steel pipes.
Export Reach: Customers in over 70 countries worldwide.
Certifications: ISO 9001, CE, TUV, SGS, BV.
Professional Team: Experienced engineers and R&D support for tailored solutions.
Service & Support
Prompt Response: Inquiries answered within 12 hours.
Technical Guidance: Professional assistance on material selection and design.
Packaging: Seaworthy packaging with bundles, wooden cases, or pallets.
After-Sales: Quality issues are resolved with replacement or refund policy.
Logistics: Flexible shipping via sea, air, or express for timely delivery.
FAQ
Q1: Do you provide test certificates?
Yes, MTC (EN 10204 3.1/3.2) and third-party inspection are available.
Q2: Can the ASTM A312 TP321 Stainless Steel Pipe be customized?
Yes, we support customized dimensions, surface finishing, and processing according to drawings.
Q3: What is your minimum order quantity (MOQ)?
Our MOQ is flexible, suitable for both small projects and large-scale procurement.
Q4: How do you ensure quality consistency?
Strict inspections for chemical composition, tensile strength, corrosion resistance, and surface quality are carried out for every batch.
Q5: Do you have ready stock?
Yes, common sizes of A312 321 Pipe are available for fast delivery.
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