GB/T9711 Seamless Pipe Manufacturer

The GB/T 9711 standard specifies requirements for seamless steel pipes used in petroleum and natural gas industries for pipeline transportation systems. It covers pipes designed for high-pressure, high-temperature, and corrosive environments, ensuring reliability and safety. The standard includes multiple product specification levels (PSL1 and PSL2), with PSL2 offering stricter chemical composition, mechanical properties, and testing requirements. Common materials include carbon steel, alloy steel, and stainless steel.

GB/T 9711 pipes are widely used in oil and gas pipelines, refineries, and petrochemical plants, providing excellent strength, toughness, and resistance to cracking and corrosion. The standard ensures compliance with international quality and safety benchmarks.

Types of GB/T9711 Standard Seamless Steel Pipe

Line Pipe

Standard Grades of GB/T 9771 Seamless Steel Pipes

GB/T 9771 standardizes seamless steel pipes for high-pressure fluid transportation. The standard includes multiple grades such as Grade A and Grade B, each with specific requirements for mechanical properties and chemical composition.

Material Grades of GB/T 9771 Seamless Steel Pipes

The material grades under GB/T 9771 are designed to meet various application needs. Common grades include 20#, 45#, and alloy steel grades. These grades are chosen based on factors like required strength, corrosion resistance, and operating temperature.

Chemical Composition of GB/T 9771 Seamless Steel Pipes

The chemical composition varies by grade. For example, Grade 20# typically contains 0.17-0.24% carbon, 0.17-0.37% silicon, and 0.35-0.65% manganese. Alloy grades may include elements like chromium and molybdenum to enhance specific properties.

Mechanical Properties of GB/T 9771 Seamless Steel Pipes

Mechanical properties are crucial for ensuring the pipes' performance. Grade 20# has a tensile strength of 360-520 MPa and a yield strength of ≥245 MPa. Alloy grades offer higher strength and better corrosion resistance, making them suitable for more demanding applications.

Advantages of GB/T 9711 Seamless Steel Pipes

GB/T 9711 seamless steel pipes are known for their high strength, good welding performance, and high dimensional accuracy. They also have excellent corrosion resistance, making them suitable for a variety of harsh environments. These pipes are manufactured to withstand high pressure, ensuring reliable performance in demanding industrial applications.

Applications of GB/T 9711 Seamless Steel Pipes

GB/T 9711 seamless steel pipes are widely used in the oil and gas industry for long-distance transportation of crude oil and natural gas. They are also used in water conveyance systems for urban water supply and irrigation. Additionally, these pipes find applications in the chemical industry, power plants, and construction projects.

Get in Touch with Silver Valley

Silver Valley are here to help！

We specialize in the production of seamless steel pipes, boiler pipes, oil casing and pipe fittings，If you have any inquiry, please feel free to contact us.

GB/T9711 Standard Seamless Steel Pipe Supplier