TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED The Steel Tube Maker
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The GB/T 3089 standard specifies the requirements for seamless ultra-thin wall stainless steel tubes, which are primarily made from various grades of stainless steel. These materials are known for their excellent corrosion resistance, high strength, and durability, making them suitable for a wide range of applications.
The specifications for these stainless steel tubes include dimensions, tolerances, and mechanical properties. The tubes are typically produced in various diameters and wall thicknesses to meet specific application requirements.
The following table presents the chemical composition of the various stainless steel grades specified in GB/T 3089:
| Steel Grade | C (%) | Si (%) | Mn (%) | P (%) | S (%) | Cr (%) | Ni (%) | Mo (%) |
|---|---|---|---|---|---|---|---|---|
| S30408 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 18.0-20.0 | 8.0-10.5 | - |
| S30403 | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 18.0-20.0 | 8.0-10.5 | - |
| S31608 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 |
| S31603 | ≤0.03 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 16.0-18.0 | 10.0-14.0 | 2.0-3.0 |
| S31668 | ≤0.08 | ≤1.00 | ≤2.00 | ≤0.045 | ≤0.030 | 16.0-18.0 | 10.0-14.0 | 4.0-5.0 |
The following table outlines the mechanical properties of the stainless steel grades specified in GB/T 3089:
| Steel Grade | Yield Strength (MPa) | Tensile Strength (MPa) | Elongation (%) | Hardness (HB) |
|---|---|---|---|---|
| S30408 | ≥205 | ≥520 | ≥40 | ≤187 |
| S30403 | ≥215 | ≥530 | ≥40 | ≤187 |
| S31608 | ≥205 | ≥520 | ≥40 | ≤187 |
| S31603 | ≥215 | ≥530 | ≥40 | ≤187 |
| S31668 | ≥205 | ≥520 | ≥40 | ≤187 |
The steel grades covered under GB/T 3089 include:
These grades are selected based on the specific requirements of the application, including corrosion resistance and mechanical strength.
Seamless ultra-thin wall stainless steel tubes are widely used in various industries, including:
In addition to the specified grades, alternative stainless steel grades may be considered based on specific application requirements. These may include:
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.