GB/T9711 Standard Seamless Steel Pipe Supplier

Standard Grades of GB/T 3087 Seamless Steel Pipes

GB/T 3087 standardizes seamless steel pipes for low and medium pressure boilers. The main grades are 10# and 20#, designed for applications with working pressures up to 5.9 MPa and temperatures up to 480°C for grade 10 and 450°C for grade 20.

Material Grades of GB/T 3087 Seamless Steel Pipes

The material grades under GB/T 3087 include high-quality carbon structural steel grades 10# and 20#. These grades are chosen for their ability to withstand high temperatures and pressures, and their resistance to corrosion in harsh environments.

Chemical Composition of GB/T 3087 Seamless Steel Pipes

The chemical composition varies by grade. For example, grade 10# contains 0.07-0.13% carbon, 0.17-0.37% silicon, and 0.38-0.65% manganese. Grade 20# contains 0.17-0.23% carbon, 0.17-0.37% silicon, and 0.38-0.65% manganese.

Mechanical Properties of GB/T 3087 Seamless Steel Pipes

Grade 10# has a tensile strength of 335-475 MPa and a yield strength of at least 195 MPa, with an elongation of at least 24%. Grade 20# has a tensile strength of 410-550 MPa and a yield strength of at least 245 MPa, with an elongation of at least 20%.

Advantages of GB/T 3087 Seamless Steel Pipes

GB/T 3087 seamless steel pipes are known for their high strength and good toughness, making them suitable for high-pressure and high-temperature applications. They have excellent corrosion resistance and precise dimensions, ensuring reliable performance and ease of installation. The pipes are manufactured using high-quality carbon structural steel, which enhances their durability and longevity.

Applications of GB/T 3087 Seamless Steel Pipes

GB/T 3087 seamless steel pipes are primarily used in the manufacture of low and medium pressure boilers, including superheated steam pipes, boiling water pipes, water-cooled wall pipes, and smoke pipes. They are also used in industrial fields for the transportation of liquids and gases, such as oil, natural gas, and water.