We provide seamless tubing compliant with ASTM A312 / ASME SA312 standards, offering custom sizing options, rigorous quality control, and a comprehensive range of global certifications. These products are widely utilized in chemical processing, food processing, water treatment, and various industrial systems.
TP304 stainless steel pipes are a versatile austenitic chromium-nickel alloy, commonly available in standards such as ASTM A312 (seamless and welded pipes), ASTM A213/A249 (boiler and heat exchanger tubes), and ASTM A269 (general-purpose tubing). With its high ductility, excellent corrosion resistance, and high-temperature strength, this material is an ideal choice for chemical industry, petrochemical industry, food-grade applications, and structural uses.
TP304 offers superior corrosion resistance compared to TP302, with high ductility and excellent drawing, forming, and spinning properties. TP304 is essentially non-magnetic, though it may become slightly magnetic after cold working. Its low carbon content means that the precipitation of carbides in the heat-affected zone during welding is minimal, and its susceptibility to intergranular corrosion is also low.
| Specification | Range / Details |
| Outer Diameter (OD) | 6.0 mm – 426 mm |
| Wall Thickness (WT) | 0.5 mm – 13 mm |
| Length | Customizable, up to client requirements |
| Surface Finish | Pickled, Annealed, Polished |
| Material Standard | ASTM A312 / ASME SA312 |
| Typical Grades | TP304, TP304L |
Excellent Corrosion Resistance
TP304 stainless steel possesses outstanding oxidation resistance, effectively resisting corrosion from atmospheric environments, freshwater, weak acids and alkalis, as well as various organic media. It is suitable for outdoor projects, general industrial, and chemical environments, ensuring long-term stable use.
High Strength and Structural Stability
The material maintains excellent mechanical properties under pressure and complex working conditions, combining high strength with toughness to ensure the structural integrity and operational safety of piping systems.
Outstanding Machinability
TP304 features excellent ductility and workability, suitable for bending, flaring, stamping, and welding processes. It is resistant to cracking and, in most cases, does not require post-weld heat treatment.
Diverse Surface Treatments and Superior Cleanability
Available in pickled, annealed, and polished surface finishes, the smooth and dense surface not only reduces fluid resistance but also effectively prevents the adhesion of impurities and bacteria, facilitating cleaning and maintenance. This makes it especially suitable for the food and pharmaceutical industries.
High-Precision Dimensional Control
Products are manufactured with strict tolerance standards for outer diameter, wall thickness, and length, ensuring installation compatibility and project reliability.
Flexible Customization Capability
Custom solutions can be provided according to project requirements, including different sizes, wall thicknesses, and lengths to meet diverse engineering applications.
Wide Temperature Adaptability
Capable of stable operation in the temperature range of -196°C to 870°C, suitable for low-temperature equipment and medium-to-high temperature working conditions.
Long Service Life and High Cost-Effectiveness
TP304 stainless steel is highly durable, has low maintenance costs, and possesses good recyclability, helping to reduce the overall lifecycle cost of a project.
| Grade | Tensile Strength (MPa) min | Yield Strength (MPa) min | Elongation (%) | Hardness (HR B max) |
| TP304 | 515 | 205 | 35 | 90 |
| TP304L | 485 | 170 | 35 | 90 |
| Data Source: ASTM A312 Standards |
| Element | C | Si | Mn | P | S | Cr | Ni |
| TP304 | 0.08 | 1.00 | 2.00 | 0.045 | 0.030 | 18.00-20.00 | 8.00-11.00 |
TP304 stainless steel pipes and tubes are widely used in industries where hygiene, corrosion resistance, and mechanical reliability are crucial:
Chemical Processing and Fluid Transport
TP304 stainless steel is widely used in the chemical processing industry, safely transporting acids, alkalis, and various corrosive or semi-corrosive media. It is suitable for reactors, tank connections, and industrial piping systems.
Food and Beverage Industry
This material meets food-grade hygiene standards and is commonly used in dairy, beverage, and brewing production lines to transport mildly acidic media (such as citric acid and tartaric acid). Its surface can be electro-polished to achieve high cleanliness, effectively inhibiting bacterial growth and ensuring food safety.
Pharmaceutical and Biotechnology
TP304L stainless steel has excellent chemical inertness, ensuring fluid purity. It is widely used in cleanroom systems, sterile piping, CIP (clean-in-place) systems, and high-standard pharmaceutical production environments.
Water Treatment and Municipal Engineering
In water treatment and plumbing systems, TP304 pipes exhibit good corrosion and aging resistance. They are suitable for municipal water supply, wastewater treatment, and seawater desalination projects, capable of resisting common chemical agents and certain levels of chloride corrosion.
Petroleum, Natural Gas, and Petrochemical Industry
TP304 / TP304L pipes are commonly used in refineries and oil & gas transportation systems, suitable for moderately corrosive environments and high-pressure conditions, meeting the requirements for hydrocarbon transport and industrial pipeline installation.
Industrial Manufacturing and Structural Applications
This material is not only used in industrial piping systems but also widely applied in structural supports, equipment frames, and manufacturing components, combining strength with aesthetic appeal.
Architectural and Decorative Engineering
Due to its excellent corrosion resistance and surface finish, TP304 stainless steel is often used in building handrails, decorative pipes, and outdoor structural components, balancing functionality with visual appeal.
Automotive and Machinery Manufacturing
In the automotive industry, TP304 stainless steel can be used in exhaust systems and certain structural components, offering good heat resistance and durability.
TP304L is increasingly becoming the preferred material for welded structures because its lower carbon content minimizes the precipitation of chromium carbides in the heat-affected zone (HAZ)—a phenomenon commonly referred to in the industry as "sensitization" or "weld decay."
If you are constructing pressure vessels or heat exchangers that require extensive welding, TP304L provides outstanding performance: it maintains excellent corrosion resistance at welded joints without the need for post-weld annealing.
As a professional stainless steel pipe manufacturer, we implement a strict quality control system at every stage of TP304 stainless steel pipe production to ensure product reliability and consistency under various demanding conditions worldwide.
Comprehensive Quality Control System
Raw Material Inspection
All raw materials undergo 100% Positive Material Identification (PMI) analysis, ensuring from the source that the chemical composition fully meets TP304 standard requirements and eliminating the risk of material deviation.
Production Process Control
During production, we implement real-time online inspections, including monitoring of key dimensions such as outer diameter and wall thickness. For welded pipe products, additional weld quality inspections are conducted to ensure the integrity and strength of welded areas.
Finished Product Performance Testing
Each batch of finished products must pass multiple stringent tests, including:
These measures ensure product safety and stability under high-pressure and complex conditions.
International Certification and Compliance
Our TP304 stainless steel pipe products have obtained multiple international quality and safety certifications, and customized certification support can be provided according to different market requirements, including:
Our Quality Commitment
Through a comprehensive quality management system and international certification support, we provide our customers with:
We offer tailored solutions for various unique project requirements:
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