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In the field of heat exchangers and condensers, stainless steel tubes play a vital role in ensuring efficient heat transfer and corrosion resistance. The GB/T 30066 standard specifies the requirements for welded ferritic stainless steel tubes used in heat exchangers and condensers. This article will provide an overview of the material, specification, key features, chemical composition, mechanical properties, steel grades, applications, and possible alternative grades in accordance with GB/T 30066.
The GB/T 30066 standard covers welded ferritic stainless steel tubes, which are primarily composed of ferritic stainless steel materials. These tubes are designed to withstand high temperatures and exhibit excellent resistance to corrosion, making them suitable for use in heat exchangers and condensers. The specification provides guidelines for the manufacturing process, dimensional tolerances, appearance, and permissible defects of the tubes.
The following table presents the chemical composition requirements (% by mass) for ferritic stainless steel tubes according to GB/T 30066:
| Element | C | Si | Mn | P | S | Cr | Ni | Mo |
|---|---|---|---|---|---|---|---|---|
| Minimum % | - | - | - | - | - | 16.0 | - | - |
| Maximum % | 0.030 | 1.00 | 2.00 | 0.040 | 0.030 | 18.0 | 0.60 | 0.75 |
The following table presents the mechanical properties of ferritic stainless steel tubes, as specified by GB/T 30066:
| Property | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) |
|---|---|---|---|
| Minimum Value | 410 | 205 | 20 |
According to GB/T 30066, the steel grade used for the welded ferritic stainless steel tubes is determined by the manufacturer and should meet the specified chemical composition and mechanical properties requirements.
The GB/T 30066 standard is applicable to welded ferritic stainless steel tubes primarily used in heat exchangers and condensers. These tubes find extensive applications in industries such as chemical processing, power generation, oil and gas, and HVAC systems. Their ability to resist corrosion and withstand high temperatures makes them highly suitable for these demanding environments.
While GB/T 30066 provides specific guidelines for ferritic stainless steel tubes for heat exchangers and condensers, there are other international standards that offer alternative grades suitable for similar applications. Some possible alternative grades include ASTM A268, EN 10217-7, and JIS G3463. It is essential to consider the specific requirements and consult the relevant standards when selecting alternative grades for a particular application.
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.
