TORICH INTERNATIONAL LIMITED
TORICH INTERNATIONAL LIMITED The Steel Tube Maker
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GOST 550-75 is a standard that covers the requirements for hot rolled seamless steel tubes used in the petroleum processing and petrochemical industry. These tubes are designed to withstand high temperatures and pressures, making them suitable for various applications in these industries.
The standard outlines the specific material and dimensional requirements for these seamless steel tubes. It specifies the chemical composition, mechanical properties, dimensions, tolerances, and testing methods to ensure the quality and reliability of the tubes.
The GOST 550-75 hot rolled seamless steel tubes exhibit several key features that make them ideal for use in petroleum processing and the petrochemical industry. Some of these features include:
High Temperature Resistance: These tubes are designed to withstand high temperatures, making them suitable for processes that involve heat exchange or transportation of hot fluids.
Corrosion Resistance: The tubes possess excellent resistance to corrosion, ensuring their durability and longevity in corrosive environments typically found in the petroleum and petrochemical industries.
Strength and Durability: The hot rolled seamless steel tubes exhibit high tensile strength and good impact resistance, making them capable of withstanding the demanding conditions encountered in the industry.
Seamless Construction: Seamless tubes have the advantage of providing enhanced reliability by eliminating welds, which can be potential weak points in the tubing.
| Element | Chemical Composition (%) |
|---|---|
| Carbon (C) | 0.10 - 0.18 |
| Manganese (Mn) | 0.40 - 0.80 |
| Silicon (Si) | 0.17 - 0.37 |
| Chromium (Cr) | 0.80 - 1.10 |
| Nickel (Ni) | 0.30 - 0.60 |
| Copper (Cu) | 0.20 - 0.30 |
| Vanadium (V) | 0.08 - 0.20 |
| Phosphorus (P) | max 0.035 |
| Sulfur (S) | max 0.035 |
| Property | Minimum Value |
|---|---|
| Tensile Strength | 490 MPa |
| Yield Strength | 315 MPa |
| Elongation | 20% |
| Impact Toughness | Charpy V-notch 27 J at -40°C |
| Hardness | <= 197 HB |
GOST 550-75 specifies several steel grades suitable for the production of hot rolled seamless steel tubes. The grade designation includes numbers that indicate the chemical composition and mechanical properties of the steel. Examples of steel grades covered by this standard include 10, 15, 20, 25, 30, 35, 40, 45, 15ChM, 30ChM, etc.
The GOST 550-75 hot rolled seamless steel tubes find wide application in the petroleum processing and petrochemical industry. Some of the common uses of these tubes include:
Heat Exchangers: These seamless tubes are utilized in the construction of heat exchangers, where they facilitate the efficient transfer of heat between fluids.
Refineries: The tubes are employed in refineries for the transportation of crude oil, natural gas, and other hydrocarbons.
Petrochemical Plants: Seamless steel tubes are used in the construction of petrochemical plants and equipment, supporting various processes such as distillation, cracking, and fractionation.
Oil and Gas Pipelines: The tubes are suitable for the construction of pipelines that transport oil and gas from production sites to processing facilities or distribution networks.
While GOST 550-75 provides specific steel grades for hot rolled seamless steel tubes, there are also alternative grades available in other international standards like ASTM, API, and DIN. These alternative grades may offer similar or slightly different chemical compositions or mechanical properties, providing flexibility for different production and application requirements. Some alternative grades commonly used include ASTM A53, API 5L, DIN 17175, etc.
In conclusion, GOST 550-75 hot rolled seamless steel tubes are a reliable choice for applications in the petroleum processing and petrochemical industry. With their high temperature resistance, corrosion resistance, strength, and durability, they help ensure the efficient and e operation of various processes in these industries.
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.