Views: 5 Author: Site Editor Publish Time: 2025-12-12 Origin: Site
GOST 8734-75 carbon seamless steel pipe is a standard specification for steel pipe. It is used in the transmission of oil and gas fluids. These seamless steel pipe exhibits excellent mechanical properties and resistance to corrosion. They are designed for use in oil and gas fluid transmission applications. The standard covers various dimensions, tolerances, and technical requirements to ensure the quality and performance of the steel pipes.
Chemical Composition
Element | Chemical Composition (%) |
Carbon | 0.17 - 0.24 |
Silicon | 0.17 - 0.37 |
Manganese | 0.40 - 0.70 |
Chromium | 0.80 - 1.10 |
Phosphorus | ≤ 0.035 |
Sulfur | ≤ 0.035 |
Mechanical Properties
Property | Value |
Tensile Strength | 590 - 740 MPa |
Yield Strength | ≥ 390 MPa |
Elongation | ≥ 14% |
Impact Toughness | ≥ 39 J/cm² |
Hardness | ≤ 229 HB |
About the grade of the seamless steel pipe.
The steel grade used in GOST 8734-75 seamless steel pipes is 20. This grade is widely recognized for its excellent combination of strength, toughness, and corrosion resistance, making it suitable for oil and gas fluid transmission applications. While GOST 8734-75 seamless steel pipes are specifically designed for their intended applications, there are alternative grades available that may suit specific requirements. Some possible alternative grades include: ASTM A519 5120, DIN 20Cr4, JIS SCr420, BS 527M20.
The key features of seamless steel pipes:
Seamless construction: The seamless steel pipes are manufactured without any welding seams, ensuring a smooth and continuous flow of fluids.
Cold-formed design: The cold-forming process enhances the strength and durability of the pipes, making them suitable for demanding applications.
Corrosion resistance: The material used in these pipes exhibits excellent resistance to corrosion, ensuring long-term reliability in harsh environments.
High tensile strength: The seamless steel pipes possess high tensile strength, allowing them to withstand high-pressure conditions during fluid transmission.
Good machinability: It is easily machinable, facilitating the fabrication and installation of these seamless steel pipes.
Application of seamless steel pipe
GOST 8734-75 seamless steel pipes are primarily used in the transmission of oil and gas fluids. These seamless steel pipes find application in various industries, including petroleum, natural gas, and petrochemicals. They are commonly used for pipelines, oil rigs, refineries, and other infrastructure related to fluid transmission.
About Us / News / Product / Project / Quality Assurance / Service / Contact Us
