Product Description
The ASTM A312 TP304L grade is a low-carbon austenitic grade of steel. ASTM A312 TP304L Pipe is designed with a superior composition of nickel and chromium, giving these pipes enhanced resistance against corrosive and oxidative media. These pipes have enhanced strength and can work in high-temperature setups. The A312 Grade 304L Pipe is designed with a thickness between 0.6mm up to 12.7mm. The pipes are very robust and can be availed in an array of sizes. These pipes are designed in schedules, where SA 312 TP 304L schedule 40 Pipe is utilized in carrying low to moderate pressures and temperatures. These pipes are very durable and can be used in different applications. The ASTM A312 Grade 304L Round Pipe is utilized in the transportation of fluids and gases efficiently and effectively over long periods of time.
Wide stock of ASME SA 312 AISI 304L ASTM A312 TP304L Stainless Steel Seamless Tubes Pipe Manufacturer and Exporter in China
AISI 304L Stainless Steel Seamless Tubes Pipes Specification
Standard Specification |
ASTM A312 TP304L
ASME SA312 TP304L |
Wall Thickness |
1 - 60 mm |
Size |
1/8 to 24 inch |
Schedule Pipe Thickness Range |
SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS |
Length |
- Single Random Length 5 to 7 Meter
- Double Random Length 10 - 12 Meter
- Fixed length
|
Surface Finish |
Polished, Bright, Annealing, Cold Finish, Pickling,Sandblasting.Shot blasting |
Standard |
DIN, JIS, ASTM, GB, ASME, AISI, AMS, EN, GOST |
Types |
Seamless |
Technique |
Cold Rolled Cold Drawn |
Manufacturing Shapes |
Round, Square, Rectangle |
Manufacturing Technology |
Cold Formed |
ASTM A312 TP304L Pipe Price List
ASTM A312 Standard Tolerance for Stainless Steel Seamless Tubes and Pipes
Standard |
Outside Diameter Tolerance(mm) |
Thickness Tolerance(mm) |
Length Tolerance (mm) |
ASTM A312 |
[10.29~48.26] |
+0.4 / -0.8 |
10.3~73 |
+20% / -12.5% |
+6/0 |
(48.26~114.30] |
±0.80 |
88.9~457 T/D≤5% |
+22.5% / -12.5% |
(114.30~219.08] |
+1.6 / -0.8 |
88.9~457 T/D>5% |
+15% / -12.5% |
(219.08~457.20] |
+2.4 / -0.8 |
508above T/D<5% |
+22.5% /-12.5% |
[457.20~48.26] |
+3.0 / -0.8 |
508above T/D>5% |
+15%/-12.5% |
Chemical Composition for ASTM A312 Gr TP 304L Stainless Steel Seamless Tubes and Pipes
Grade |
Carbon |
Chromium |
Manganese |
Sulfur |
Silicon |
Phosphorus |
Nickel |
ASTM A312 TP304L |
0.035 |
18.0-20.0 |
2 |
0.03 |
1 |
0.045 |
8.0-13.0 |
Mechanical Properties for ASTM A312 Gr TP 304L Stainless Steel Seamless Tubes and Pipes
Material |
Yield Strength |
Temperure |
Tensile Strength |
Heat |
Elongation |
Ksi (MPa), Min. |
Min.º F(º C) |
Ksi (MPa), Min. |
Treatment |
ASTM A312 TP304L |
25(170) |
1900 (1040) |
70(485) |
Solution |
35 |
Equivalent for ASTM A312 Gr TP 304L Stainless Steel Seamless Tubes and Pipes
Werkstoff/DIN |
European Standards grades |
ASTM grades |
1.4306 |
X2CrNi19-11 |
ASTM A 312 Grade TP304L |
1.4307 |
X2CrNi18-9 |
ASTM A 312 Grade TP304L |
Physical Properties for ASTM A312 Gr TP 304L Stainless Steel Seamless Tubes and Pipes
Grade |
Mean Coefficient of Thermal Expansion (m/m/0C) |
Density (kg/m3) |
Specific Heat 0-1000C (J/kg.K) |
Elastic Modulus (GPa) |
Thermal Conductivity (W/m.K) |
Electrical Resistivity (n.m) |
0-1000C |
0-3150C |
0-5380C |
at 1000C |
at 5000C |
ASTM A312 TP304L |
17.2 |
17.8 |
18.4 |
8000 |
500 |
193 |
16.2 |
21.5 |
720 |
Product Parameters
Packaging & Shipping


- All of our stainless steel seamless pipe & tubes are packaged as per international standard to prevent any possible damage or loss. By default, we will use thick woven plastic bag to bundle the finished pipes together in batches.
- For some special pipes & tubes that are vulnerable to dirt, scratches, stress or rough handling, we will suggest wooden case for protection. Kindly note, wooden case can incur extra cost, not only its own cost, but also the increased freight cost, which is especially true for air transportation.
- For enhanced customer experience, we also provide dedicated package as per your special requirements.
Certifications

The inspection of our company and products is open to customers themselves or their designated third-party inspectors, such as SGS, BV, TUV, DNV, etc., who are well-known in the industry.
We provide Manufacturer TC (Test Certificate) in accordance to EN 10204/3.1B, Raw Materials Certificate, HT/DNT Test Report, Third Party Inspection Report.
• EN 10204/3.1B
• Raw Materials Certificate
• HT/NDT Test Report
• Third Party Inspection Report
Material Testing: We ensure that all our materials go through strict quality tests before dispatching them to our clients.
• Mechanical Testing
• Hardness Test
• Chemical Analysis - Spectro Analysis
• Positive Material Identification - PMI Testing
• Flattening Test
• Flaring Test
• Intergranular Corrosion (IGC) Test
PRODUCT APPLICATION


- 1. General service
- 2. Curatorial Industry
- 3. Food Industry
- 4. Ornamental
- 5. Aerospace Industry
- 6. Petrochemical
- 7. Fluid transport
- 8. Nuclear Industry
- 9. Boiler heat- exchanger
- 10. Oil and gas service
Company Profile
Wenzhou Guohao Steel was established in 2008. We are ISO 9001:2015 approved manufacturer, having a state-of-the-art infrastructure facility for having smooth production process. It has successfully grown by focusing on serving customers across a range of high technology industries. One of our company strengths is its people, with many colleagues having been with the company from the beginning. This provides our customers with the benefit of a wealth of experience and industry knowledge. Guohao Steel now has the whole of manufactured stainless steel products to add to its already large range of High Performance Nickel Alloys.
Guohao Steel adhere to the high standards of integrity and compliance required, including:
- Environmental standards
- Health and safety standards
- Ethical trading standards
- Export compliance requirements
We now stock and have direct access to a wide range of other materials, including stainless steels and nickel alloys. We supply and process pipes for numerous key industry sectors, collaborating with both small businesses and large international manufacturers across various countries. Due to our reputation for quality, reliability, and industry approvals, we are a well-regarded supplier in diverse sectors. Our delivery of long-term tangible benefits enables our customers to compete in today's challenging global marketplace.
In order to achieve our goals, we are improving our facilities and expanding our machinery to offer broader processing capabilities. Additionally, our investment extends to the growth and development of our teams, which represent our most valuable resource. We aim for our customers to receive the best experience and trust in the expertise, knowledge, and experience of our teams. As we continue looking towards the future, we rely on our core values to guide both decisions and actions.
Our Advantages




- More than 16 Years of Experience in Stainless Steel Production.
- Provides cost-effective products and professional services to you.
- We offer an extensive range of stainless steel, super duplex steel,nickel alloy.
FAQ
1.Q: Do you provide customized product services?
A: Of course, we can design and produce the products you need based on your specifications and drawings. For example: special dimensions, special controls, OEM, etc.
2.Q: Are you a manufacturer or trader?
A: We are manufacturers. We have our own factory to produce and process various kinds of stainless steel /nickel alloy pipes.
3.Q: Can we get the some samples?Is there a charge?
A: Yes, we will provide you with the samples you want. The samples are free of charge, but the customer may have to pay the freight.
4.Q: Can we visit your factory?
A: Of course, we welcome you to visit our factory on-site or visit our production line through online videos to learn more about our strength and quality. Once we have your schedule, we will arrange a professional sales team to follow up with you.
5.Q: How do you ensure the quality of the product?
A: All products must undergo three inspections throughout the entire manufacturing process, including production, cutting, and packaging. The factory inspection report is provided with the goods. If necessary, third-party inspections such as SGS can be accepted.
6.Q: What is your delivery time?
A: Different products and procurement quantities have different delivery times. The product will be delivered as soon as possible on the basis of quality assurance. Usually, if the goods are in stock, it takes 3-10 days. Alternatively, if the goods are out of stock, it will take 25 to 45 days.
7.Q: Can you arrange shipment?
A: Of course, we have freight forwarders who have been cooperating for many years. We are VIP and can provide you with the most favorable prices and professional services.
8.Q: What if I don't have import experience?
A: We have rich export experience. As long as you have an import license, please leave the rest to us! We will help you choose the most suitable transportation service to safely and accurately deliver the product to the place where it is needed.