ASTM A312 TP304 Stainless Steel Pipe
Grade：TP304, TP304L
Type：Seamless (SMLS) / Welded (ERW)
Schedule：SCH 5S, 10S, 40S, 80S, and others as per ASME B36.19
Quality Assurance : Full MTC (EN 10204 3.1/3.2) with complete traceability
Third-Party Testing: Optional SGS, TÜV, and ultrasonic testing available
Package: Standard worthy packing
The ASTM A312 TP304 Stainless Steel Pipe is the most widely used austenitic stainless steel grade. It offers an excellent combination of strength, ease of fabrication, and resistance to a wide range of corrosive environments. The TP304L low-carbon variant is also available for applications involving welding, to prevent carbide precipitation.
Our ASTM A312 TP304 pipes undergo rigorous quality control processes. They are suitable for intermittent service up to 870°C (1600°F) and continuous service to 925°C (1700°F), making them ideal for both corrosive and high-temperature service.
A312 TP304 specifications
|
Parameter |
Details |
|
Standard |
ASTM A312 / ASME SA312 |
|
Grade |
TP304, TP304L |
|
Type |
Seamless (SMLS) / Welded (ERW) |
|
Schedule |
SCH 5S, 10S, 40S, 80S, and others as per ASME B36.19 |
|
Size Range (NPS) |
1/8" to 24" |
|
Outside Diameter (OD) |
10.3 mm to 609.6 mm |
|
Wall Thickness |
As per the specified schedule or customer requirement |
|
Length |
Random (6m), Double Random (12m), or Cut-to-Length |
Chemical Composition
|
Element |
TP304 (%) |
TP304L (%) |
|
Carbon (C) |
0.08 max |
0.030 max |
|
Manganese (Mn) |
2.00 max |
2.00 max |
|
Silicon (Si) |
0.75 max |
0.75 max |
|
Phosphorus (P) |
0.045 max |
0.045 max |
|
Sulfur (S) |
0.030 max |
0.030 max |
|
Chromium (Cr) |
18.00 - 20.00 |
18.00 - 20.00 |
|
Nickel (Ni) |
8.00 - 11.00 |
8.00 - 12.00 |
|
Iron (Fe) |
Balance |
Balance |
Mechanical Properties Of ASTM A312 TP304 Stainless Steel Pipe
|
Property |
Requirements per ASTM A312 |
|
Tensile Strength |
≥ 515 MPa (75 ksi) |
|
Yield Strength |
≥ 205 MPa (30 ksi) |
|
Elongation |
≥ 35% |
Equivalent Grades for 304 Pipes
|
Standard |
Grade |
|
UNS |
S30400 / S30403 |
|
EN |
1.4301 / 1.4307 |
|
JIS |
SUS 304 |
TP304 pipe supplier Quality Assurance
- Hydrostatic Testing: Every tube is tested to the required pressure
- Non-Destructive Examination: Eddy current or ultrasonic testing
- Chemical Analysis: Full composition verification
- Mechanical Testing: Tensile and flattening tests
- Visual Inspection: 100% surface quality check
Production Process
The production process for TP304 stainless steel pipes primarily involves hot rolling, cold rolling, welding, and polishing. Hot rolling and cold rolling serve as the main forming processes, shaping stainless steel plates into the desired tubular form through rolling at high temperatures or room temperature. Welding techniques are employed to join different pipe sections, with common methods including argon arc welding and TIG welding. Finally, polishing treatment is applied to achieve a smooth, lustrous finish on the surface of TP304 stainless steel pipes.
Stainless Steel Pipe Selection Guide
| Property | TP304L | 304 | 316L | Duplex |
|---|---|---|---|---|
| Key Advantage | Balanced Performance | Cost-Effective | Chloride Resistance | Superior Strength |
| Corrosion Resistance | Excellent | Good | Outstanding | Exceptional |
| Temperature Limit | 870°C | Limited | Good | Limited |
| Mechanical Strength | Well-Balanced | Standard | Good | Very High |
| Weldability | Excellent | Good | Good | Requires Expertise |
Selection Guide:
General Use: TP304L - Optimal balance for most industrial applications
Budget Option: 304 - Reliable performance at competitive cost
Chloride Environments: 316L - Preferred for chemical and marine services
Demanding Conditions: Duplex - Maximum strength and corrosion resistance
(Our technical team provides material selection support. Contact us with your specific service conditions for personalized recommendations.)
Practical Application Cases
In the oil and gas industry, ASME SA312 TP304L stainless steel pipes play a critical role in the extraction, transportation, and processing systems of oil and gas fields. In offshore platform processes such as oil-gas separation, desulfurization, and decarbonization, their excellent corrosion resistance and high strength ensure long-term stable system operation. Simultaneously, in the laying of onshore oil and gas pipelines, 304L seamless pipes are among the preferred materials due to their outstanding weldability and weather resistance.
Application Fields
Chemical & Petrochemical Processing:
Transporting corrosive chemicals.
Oil & Gas:
Instrumentation lines, utility services.
Food & Beverage:
Sanitary processing lines, breweries.
Pharmaceutical & Biotech:
High-purity water systems.
Architectural:
Handrails, structural components.
Power Generation:
Feedwater and condenser tubes.
FAQ
Q1: What is the difference between TP304 and TP304L?
A: The key difference is the carbon content. TP304L has a maximum carbon content of 0.03%, which minimizes the risk of carbide precipitation during welding, making it the preferred choice for heavy welding applications to prevent intergranular corrosion.
Q2: Do you provide both seamless and welded pipes?
A: Yes, we supply ASTM A312 TP304 Stainless Steel Pipe in both seamless (SMLS) and welded (ERW) types. The choice depends on your application's pressure, corrosion, and budget requirements.
Q3: What is the packaging method?
A: We employ standard export packaging protocols. This includes rust-preventive oil protection, plastic end caps on pipes, and secure fastening using sturdy wooden/steel pallets. The outer layer is covered with waterproof woven fabric or stretch film to ensure goods remain intact during ocean transport.
Q4: What is the minimum order quantity?
A: We offer flexible procurement options. Standard specification products support small trial orders, while bulk orders qualify for preferential pricing. Please provide specific requirements for a customized quotation.
Q5: What are the production and delivery lead times?
A: Standard specification products typically ship within 10-15 business days. Custom specifications or bulk orders generally require 3-5 weeks. We will provide precise production scheduling upon order confirmation.
Q6: Where are products manufactured, and what is the customs code?
A: Products are manufactured in China. The general customs code classification falls under the 7306 series (stainless steel pipes). The specific code will be finalized based on product specifications and accurately stated on the commercial invoice.
Q7: What quality inspections are performed?
A: We implement comprehensive quality inspections:
- Hydrostatic pressure testing
- Non-destructive testing (ultrasonic/eddy current)
- Third-party inspections (e.g., SGS, BV) are available upon request.
- Material Test Certificates (MTC) compliant with ASTM A312 standards are provided for each batch.
Q8: What are the shipping terms?
Flexible terms supported: FOB, CIF, DDP, etc.
Q9: What payment methods are accepted?
A: TT, Letter of Credit, PayPal, Western Union, etc.
We are a manufacturer and supplier of ASTM A312 TP304/TP304L stainless steel pipes with 20 years of professional expertise. Our products strictly adhere to international standards such as ASTM A312 and are certified under the ISO9001 Quality Management System. With reliable quality, our products have been exported to customers in over 100 countries and regions worldwide, finding extensive applications in critical sectors including petrochemicals, food and pharmaceuticals, power and energy, and construction engineering.
We consistently uphold the principle of pursuing excellence and integrity as our foundation, dedicated to providing global customers with one-stop stainless steel piping solutions and high-quality product services.
Request A Quote Now
Please send us your ASTM A312 TP304 Stainless Steel Pipe product requirements and contact information
Email:baohui@bhsteelpipe.com
WhatsApp: 8613468954786
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