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We understand the challenges of various industries, and manufacture reliable quality products through top-notch equipment and professional production technology, so that customers' ideas can be quickly realized.
Grade 304 stainless steel is essentially a standard 18/8 austenitic stainless steel, widely used in stainless steel (SS) applications and available in various surface finishes, shapes, and product forms. It offers excellent welding and forming characteristics. Grade 304L is the low-carbon version of 304, which eliminates the need for post-weld annealing, making it suitable for the fabrication of high-specification components. Grade 304H, with a higher carbon content, is widely utilized in high-temperature applications. The austenitic structure provides good toughness even at cryogenic temperatures. Therefore, 304/304L/304H stainless steel pipes have become an ideal choice for a wide range of applications.
SS 304 pipe is composed of chromium and nickel. SS 304L pipe contains less carbon than SS 304, which improves its corrosion resistance in certain environments. Moreover, the reduced carbon content enhances its weldability compared to other stainless steel alloys. Due to the higher carbon content, 304H stainless steel pipe offers greater tensile and yield strength than other grades, making it more suitable for applications with higher load-bearing requirements. These 304 stainless steel pipes are considered among the most versatile materials due to their wide applicability and excellent corrosion resistance.
Industry-leading 18/8 austenitic stainless steel piping systems engineered for universal industrial applications. From food processing to pharmaceutical manufacturing, our TP304/304L/304H seamless tubes deliver exceptional corrosion resistance, superior weldability, and unmatched reliability across standard industrial temperature ranges.
3.18-406.4mm
Diameter Range
0.3-20mm
Wall Thickness
3800 Tons
Annual Capacity
50+ Countries
Global Distribution
Core Industrial Applications
01
Food & Beverage Processing
Sanitary piping networks for dairy, juice, and beverage production. Non-contaminating properties ensure product integrity while maintaining hygienic standards in processing lines.
02
Pharmaceutical Manufacturing
Critical fluid handling systems for drug production and chemical reactors. TP304L's superior weldability eliminates post-weld sensitivity concerns in high-specification component fabrication.
03
HVAC & Utilities
Heating, ventilation, and water distribution networks. Proven durability in moderate corrosive environments with cost-effective material selection for municipal and building infrastructure.
04
High-Temperature Thermal Systems
TP304H tubes excel in furnace connections and steam lines operating above 400°C. Enhanced carbon content provides superior strength retention at thermal extremes.
05
Chemical Processing Equipment
Heat exchangers, condensers, and distillation columns handling diverse chemical environments. Austenitic structure provides excellent toughness even in complex chemical applications.
06
Cryogenic & Low-Temperature Applications
Specialized systems operating at temperatures down to -196°C. Austenitic stainless maintains exceptional ductility and impact resistance at extreme cold conditions.
Technical Specifications
Outer Diameter
3.18mm to 406.4mm (comprehensive range for diverse applications)
Wall Thickness
0.3mm to 20mm (precision manufacturing)
Maximum Length
25,000mm (extended lengths available for engineering flexibility)
Surface Finish
Polished, pickled, or annealed per specification
Manufacturing Method
Seamless cold-drawn or hot-extruded construction
Performance Metrics
| Tensile Strength | 515-620 MPa (varies by grade and condition) |
| Yield Strength | 205-310 MPa (temperature dependent) |
| Elongation | 40-50% (excellent ductility) |
| Corrosion Resistance | Excellent in neutral environments, oxidizing acids |
| Toughness at -196°C | Exceptional (cryogenic applications) |
| Weldability Rating | Excellent (304H requires post-weld annealing) |
Material Characteristics & Grade Differentiation
TP304 - Universal Standard Grade
The most widely used austenitic stainless steel globally. TP304's 18-10 chromium-nickel composition creates a stable austenitic structure offering reliable corrosion resistance across neutral to mildly oxidizing environments.
Superior formability and weldability enable complex fabrication in industrial piping systems. The material maintains excellent mechanical properties from cryogenic temperatures to 425°C continuous service.
Cost-effective solution for general industrial applications without specialized environmental demands. Represents the optimal balance between performance and economic viability.
TP304L & TP304H - Specialized Variants
TP304L reduces carbon content (0.03% max), eliminating chromium carbide precipitation during welding. This breakthrough eliminates sensitization in heat-affected zones without requiring expensive post-weld annealing procedures.
TP304H increases carbon content (0.04-0.10%) for superior high-temperature strength. The enhanced carbon provides elevated tensile and yield values, making it ideal for thermal systems and furnace applications sustained above 400°C.
Both variants maintain 304's fundamental corrosion resistance while addressing specific application requirements. Grade selection directly impacts fabrication procedures, thermal processing, and long-term performance characteristics.
Six Critical Advantages
Universal Corrosion Resistance
Austenitic 18/8 structure provides reliable protection in neutral, slightly oxidizing, and mildly acidic environments. Proven performance across 50+ countries ensures global reliability.
Exceptional Weldability
TP304L eliminates post-weld sensitivity through low-carbon formulation. Complex fabrication and field welding proceed without expensive annealing cycles or reduced mechanical properties.
Cryogenic Temperature Performance
Maintains exceptional toughness and impact resistance at temperatures down to -196°C. Austenitic structure eliminates brittleness concerns in specialized low-temperature applications.
Superior Formability
Excellent cold-working characteristics enable complex pipe bending and fabrication. Tight radius bends and intricate geometries achieve full strength without annealing between operations.
TP304H Thermal Excellence
Enhanced carbon content maintains 425°C+ continuous service capability. Superior strength retention at thermal extremes enables furnace and high-temperature thermal system applications.
Cost-Effectiveness & Availability
Established global production ensures material availability and price stability. Standard specifications simplify procurement and reduce sourcing complications across international projects.
Economic & Lifecycle Value Analysis
Material Cost Structure
Highly competitive pricing compared to superior grades (316, 317). Cost advantage increases with order volume and long-term supply agreements. Standard global availability ensures price transparency and favorable procurement terms.
Fabrication Economics
TP304L's superior weldability eliminates post-weld thermal processing. Direct cost savings from simplified fabrication procedures. Field installation advantages reduce labor intensity and project timelines significantly.
Lifecycle Durability
Extensive proven service history demonstrates 20-30 year operational lifespans under standard conditions. Minimal maintenance and replacement cycles reduce total cost of ownership compared to carbon steel alternatives.
Established Global Application Examples
Europe & Scandinavia
- Pharmaceutical manufacturing facilities - Switzerland, Germany
- Food processing equipment - Nordics and Netherlands
- Municipal water systems - throughout EU
- Industrial heat exchangers - established infrastructure
- HVAC distribution networks - commercial buildings
North America & Latin America
- Beverage processing lines - major operations
- Chemical plant piping systems - established projects
- Dairy equipment networks - US & Canada
- Thermal system installations - industrial sector
- Municipal infrastructure - widespread deployment
Asia-Pacific Region
- Electronics manufacturing facility cooling
- Food & beverage production networks - rapid growth
- Pharmaceutical facility installations - expanding market
- Chemical processing equipment - industrialization
- Building utilities & HVAC systems - infrastructure development
International Standards & Specifications Compliance
ASTM A269
American standard for seamless and welded austenitic stainless steel tubing
EN 10216-5
European standard for seamless steel tubes for high-temperature applications
DIN 17456
German standard for seamless stainless steel tubes
JIS G3448
Japanese standard for stainless steel seamless tubes
GOST 9941
Russian standard for seamless stainless steel tubes
ISO 1127
International standard for stainless steel tubes and pipes
TP304 Series vs. Alternative Austenitic Grades
| Characteristic | TP304/304L/304H | TP316/316L | TP321 |
| Corrosion Resistance | Excellent (neutral) | Excellent (chloride environments) | Good (high-temperature) |
| Cost Position | Most economical | 15-20% premium | 10-15% premium |
| Weldability | Excellent (304L) | Good (requires care) | Excellent |
| High-Temp Service | Good to 425°C | Good to 400°C | Excellent to 425°C |
| Global Availability | Universal sourcing | Widely available | Good availability |
| Application Scope | General industrial | Chemical/marine | Thermal systems |
Frequently Asked Questions
What is the primary difference between TP304, TP304L, and TP304H?
▼
TP304 is the standard austenitic grade suitable for general industrial applications. TP304L (Low-carbon) eliminates post-weld sensitization through reduced carbon content, ideal for welded structures requiring minimal thermal processing. TP304H (High-carbon) increases strength retention above 400°C, preferred for furnace and high-temperature applications where sustained mechanical properties at thermal extremes are critical.
Does TP304 require post-weld heat treatment?
▼
Standard TP304 typically does not require post-weld annealing for most applications. However, heavy sections or applications demanding maximum corrosion resistance may benefit from stabilization annealing. TP304L specifically eliminates this requirement through low-carbon formulation. TP304H may require post-weld annealing for thermal stress relief depending on application severity.
What is the maximum continuous service temperature?
▼
TP304 and TP304L maintain reliable performance to approximately 400-425°C continuous operation. TP304H, with enhanced carbon content, provides superior strength retention at sustained high temperatures (up to 425°C+). Above these temperatures, super-austenitic grades (TP316, TP347) or nickel-based alloys become more appropriate. Specific applications require engineering analysis.
Can TP304 pipes handle cryogenic applications?
▼
Yes, TP304 exhibits exceptional performance at cryogenic temperatures down to -196°C and lower. The austenitic structure maintains excellent ductility and impact resistance without embrittlement. This makes TP304 ideal for liquid nitrogen systems, LNG transport, and other cryogenic fluid applications where temperature extremes would compromise ferritic or martensitic stainless steels.
How does TP304 compare to TP316 for corrosion resistance?
▼
TP304 provides excellent corrosion resistance in neutral and mildly oxidizing environments. TP316's elevated molybdenum content (2-3%) delivers superior resistance to chloride attack and pitting corrosion—beneficial for marine, coastal, or high-chloride industrial environments. For standard industrial applications without significant chloride exposure, TP304 delivers equivalent protection at lower cost.
What seamless pipe sizes does our factory produce?
▼
Our manufacturing facility produces seamless TP304/304L/304H tubes in outer diameters from 3.18mm to 406.4mm, with wall thicknesses ranging 0.3mm to 20mm, and lengths up to 25,000mm. Custom sizes beyond these ranges can be accommodated. Contact our technical team with specific dimensional requirements for custom production feasibility assessment.
