Dimensional Specification
| Parameter | Available Range | Tolerance Standard |
| Outside Diameter | 1/8" (3.18mm) - 24" (610mm) | ±1% per ASTM A999 |
| Wall Thickness | SCH 5S - SCH 160, XXS | ±10% for heavy cold worked condition |
| Length | 5.8m, 6m, 12m, Custom Cut-to-Length | ±5mm per meter |
| Pipe Ends | Plain End (≤2"), Beveled End (>2"), With Plastic Caps | Complies with ASME B16.25 |
| Surface Finish | Black Painted, Natural, 2B Polished | No cracks, seams or laminations allowed |
Chemical Composition
| Element | Content Standard for TP304 | ASTM A312 Requirement |
| Carbon (C) | ≤ 0.08% | Complies with A312 low-carbon specification for excellent weldability |
| Chromium (Cr) | 18.0% - 20.0% | Meets minimum 10.5% Cr threshold for corrosion resistance |
| Nickel (Ni) | 8.0% - 10.5% | Ensures stable austenitic structure for low-temperature performance |
| Manganese (Mn) | ≤ 2.0% | Controlled for consistent mechanical properties |
| Silicon (Si) | ≤ 1.0% | Optimized for surface finish and fluid flow efficiency |
| Phosphorus (P) | ≤ 0.045% | Strictly limited to avoid brittleness |
| Sulfur (S) | ≤ 0.030% | Reduces risk of hot cracking during processing |
Mechanical Properties
| Property | Test Result for TP304 | ASTM A312 Minimum Requirement |
| Tensile Strength | ≥ 520 MPa (75,400 psi) | ≥ 515 MPa (75,000 psi) |
| Yield Strength (0.2% Offset) | ≥ 210 MPa (30,450 psi) | ≥ 205 MPa (30,000 psi) |
| Elongation (2" / 50mm) | ≥ 45% | ≥ 35% |
| Hardness (Brinell) | ≤ 187 HB | ≤ 192 HB |
| Low-Temperature Impact Energy | ≥ 28 J at -196°C | Accepted for service as low as -250°C per ASME Code |
Performance Advantages
| Advantage | Detailed Description | SEO Target Keywords |
| Superior Corrosion Resistance | Dense chromium oxide passive layer resists oxidation, water corrosion and mild chemical attack, 50+ years service life | corrosion resistant stainless steel pipe, 304 stainless fluid pipe |
| Smooth Inner Wall | Low friction coefficient reduces fluid resistance by 12%, prevents scaling and avoids secondary contamination | smooth bore stainless pipe, low pressure drop fluid tubing |
| Full Seamless Structure | No welded seams eliminates leak risk, ideal for high-pressure fluid transportation | seamless stainless steel pipe, leak-proof fluid pipeline |
| Food & Pharmaceutical Grade | Oil-free cleaning ensures compliance with hygiene standards for drinking water, beverage and drug delivery | food grade 304 pipe, sanitary fluid transport tube |
| Wide Temperature Adaptability | Stable performance from -250°C to 300°C, suitable for cryogenic and high-temperature fluid systems | high temperature resistant pipe, low temperature stainless tubing |
| 100% Recyclable | Eco-friendly material with 90%+ recycling rate, meets green building requirements | eco friendly stainless pipe, recyclable fluid pipeline |
Main Application
| Industry | Typical Fluid Transportation Use Cases | High Search Volume Keywords |
| Oil & Gas | Crude oil pipeline, natural gas gathering line, refinery process piping | oil and gas stainless pipe, refinery fluid pipeline |
| Water Treatment | Municipal water supply, direct drinking water system, wastewater treatment | drinking water stainless pipe, water treatment fluid tubing |
| Chemical & Petrochemical | Organic solvent transport, dilute acid/alkali delivery, process fluid piping | chemical resistant pipe, industrial chemical fluid line |
| Food & Beverage | Juice, beer, milk and edible oil transportation pipeline | food processing stainless pipe, beverage delivery tubing |
| Pharmaceutical | Ultra-pure water system, sterile drug fluid transfer piping | pharmaceutical grade pipe, medical fluid transport tube |
| Construction | Building water supply, hot water circulation, fire protection pipeline | building plumbing stainless pipe, hot water fluid line |
| Shipbuilding | Marine fluid system, offshore platform water and fuel piping | marine grade stainless pipe, ship fluid transport line |
| Power Plant | Boiler feed water, cooling water and steam auxiliary piping | power station fluid pipe, boiler water delivery tube |
Quality Control & Testing
| Testing Item | Execution Standard | Quality Assurance |
| Hydrostatic Test | Per ASTM A999 | 100% pressure testing at 1.5x design pressure, no leakage |
| Eddy Current Inspection | ASTM E426 | Full body non-destructive flaw detection, zero crack defect |
| Spectral Analysis | PMI Testing | 100% material verification for each batch |
| Intergranular Corrosion Test | ASTM A262 | Passes boiling sulfuric acid test for corrosion resistance |
| Dimensional Check | ASME B36.19 | 100% OD and wall thickness inspection before shipment |
| Packaging | Standard seaworthy wooden case | Protected with plastic caps to avoid contamination during transit |
Packaging & Shipping
| Section | Details |
| Packaging Method | Individual plastic end caps → Bundled with steel strips → Wrapped in waterproof kraft paper → Packed in fumigated wooden cases |
| Shipping Marks | Customizable customer logo, heat number, size, grade, NDE marks clearly printed |
| Port of Shipment | Main ports in China (Shanghai, Tianjin, Qingdao, Ningbo) |
| Delivery Terms | FOB, CFR, CIF, EXW, DDU all available |
| Shipping Documents | Commercial invoice, packing list, original MTC material test certificate, PMI report, test protocol, bill of lading |
| After-Sales Service | 24/7 technical support, 12-month quality warranty, free replacement for manufacturing defects |
Products Description
FAQ
Q: What is ASTM A312 TP304 seamless stainless steel pipe used for?
A: It is specially designed for fluid transportation including water, oil, gas and various mild corrosive media, widely used in chemical, food, water supply, pharmaceutical and construction industries. This seamless pipe is engineered to eliminate leak risks in continuous fluid delivery systems, making it a top choice for projects that demand consistent performance for long-term fluid transport operations.
Q: What is the difference between TP304 and 304L seamless pipe?
A: TP304 has 0.08% max carbon content for general high-temperature service, while 304L has ≤0.03% carbon for better weldability in heavy welding projects. For standard fluid transportation applications that do not require extensive on-site welding or ultra-low temperature service, ASTM A312 TP304 seamless stainless steel pipe delivers balanced cost efficiency and reliable mechanical strength for most fluid system requirements.
Q: Can this pipe be used for drinking water transportation?
A: Yes, our oil-free cleaned TP304 seamless pipe fully meets global drinking water hygiene standards, no heavy metal precipitation, no secondary pollution. The smooth inner wall of this seamless stainless steel pipe prevents bacterial buildup and scale formation, ensuring the transported drinking water stays clean and compliant with health regulations for municipal water supply and residential plumbing systems.
Q: What is the maximum working pressure of TP304 seamless pipe?
A: Based on wall thickness SCH 4S to SCH 160, the working pressure ranges from 1.0MPa to 16MPa, we can provide professional pressure calculation service for your project. Every batch of our ASTM A312 TP304 seamless stainless steel pipe for fluid transportation undergoes 100% hydrostatic testing to confirm it can safely handle the rated pressure for your specific fluid transportation scenario.
Q: How long is the service life of TP304 fluid pipe?
A: Under normal working environment, the service life can reach more than 50 years, far longer than carbon steel, galvanized steel and plastic pipes. Its excellent corrosion resistance and stable austenitic structure mean minimal maintenance is required over decades of continuous fluid transportation, reducing long-term operational costs for industrial, commercial and infrastructure projects.
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