TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED The Steel Tube Maker
Add to Cart
The GB/T 12771 standard specifies the requirements for electrical resistance welded austenitic stainless steel pipes used for fluid transport. These pipes are designed to provide excellent corrosion resistance, strength, and durability, making them suitable for various applications in industries such as chemical processing, oil and gas, and water treatment.
The pipes covered under this standard are manufactured using a specific set of materials and processes to ensure high quality and performance. The specifications include dimensions, tolerances, and testing methods to ensure compliance with industry standards.
The following table presents the typical chemical composition of the specified stainless steel grades:
| Grade | C (%) | Cr (%) | Ni (%) | Mo (%) | Mn (%) | Si (%) | P (%) | S (%) |
|---|---|---|---|---|---|---|---|---|
| S30210 | ≤0.08 | 18.0-20.0 | 8.0-10.0 | - | ≤2.0 | ≤1.0 | ≤0.045 | ≤0.03 |
| S30403 | ≤0.03 | 18.0-20.0 | 8.0-10.5 | - | ≤2.0 | ≤1.0 | ≤0.045 | ≤0.03 |
| S30408 | ≤0.08 | 18.0-20.0 | 8.0-10.5 | 2.0-3.0 | ≤2.0 | ≤1.0 | ≤0.045 | ≤0.03 |
| S30409 | ≤0.03 | 18.0-20.0 | 8.0-10.5 | 3.0-4.0 | ≤2.0 | ≤1.0 | ≤0.045 | ≤0.03 |
| S30453 | ≤0.03 | 18.0-20.0 | 8.0-10.5 | 3.0-4.0 | ≤2.0 | ≤1.0 | ≤0.045 | ≤0.03 |
The mechanical properties of the specified stainless steel grades are summarized in the following table:
| Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| S30210 | ≥205 | ≥515 | ≥40 | ≤187 |
| S30403 | ≥205 | ≥515 | ≥40 | ≤187 |
| S30408 | ≥205 | ≥515 | ≥40 | ≤187 |
| S30409 | ≥205 | ≥515 | ≥40 | ≤187 |
| S30453 | ≥205 | ≥515 | ≥40 | ≤187 |
The steel grades covered under this standard include:
Each grade has specific properties and applications, making them suitable for different environments and requirements.
These austenitic stainless steel pipes are widely used in various applications, including:
While the specified grades are widely used, there are alternative grades that may be considered based on specific requirements:
Haiyan Sanxin Steel Pipe Factory is a leading manufacturer of steel pipes in China. Located in a region with excellent geographical advantages, the factory is situated close to the Zhoushan Port and Ningbo Port.
Our factory covers an area of more than 25,000 square meters and has been in the steel pipe manufacturing business for 20 years. Over this period, we have accumulated a wealth of professional experience, which has helped us establish ourselves as a trusted name in the industry.
At our factory, we specialize in the production of various types of steel pipes, including stainless steel pipe, carbon steel pipe, copper pipe, steel pipe,seamless steel pipe and welded pipe. Our expertise in this field is evident from the 12 patents that we hold, which demonstrate our commitment to innovation and excellence.
A: manufacturer,also can do trading.
A: Generally speaking,it is 10-15 days if the goods are in stock,or it is 30-40 days if the goods are not in stock, it is according to quantity.
A: Yes, we could offer the sample for free charge but need pay the cost of freight.
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 30% T/T in advance ,balance before shippment.
If you have another question, pls feel free to contact with me.