GOST 8734-78 15ChM Seamless Carbon Steel Tube 15XM 15CrMo steel pipes

We are the professional manufacturer of GOST 8734-78 15XM  Seamless Alloy Steel Tube 15XM pipes in China.

GOST 8734-78 is a  Russian standard that defines the specifications for cold-formed seamless steel pipes with precise dimensions. These pipes are widely used across industries such as construction, machinery, oil and gas, and power generation

• Name: Seamless Cold-formed Steel Pipes;
• Scope: It covers the technical specifications for seamless cold-formed pipes made of corrosion-resistant high-alloy steel.
• Dimensions: 5 mm – 250 mm;

GOST Steel 15XM

15XM is a low-alloy, heat-resistant steel that features chromium (Cr) and molybdenum (Mo) as alloying elements to enhance its mechanical strength, heat resistance, and corrosion resistance.

The alloy is primarily utilized in the manufacturing of pressure vessels, steam boilers, and components for thermal power plants.

Chemical composition of GOST 8734 15XM Pipes

Heat Treatment of 15XM Pipes

To enhance its mechanical properties and resistance to high-temperature creep, 15XM steel is typically subjected to the following heat treatment processes:

1. Normalizing: Heating to 900–950°C followed by air cooling.
2. Tempering: Heating to 650–700°C to relieve internal stresses and improve toughness.
3. Annealing: May be used to soften the material for further machining or forming.

15XM Equivalent ASTM Material Grades

15XM is specified under the GOST standards. While its exact equivalents in other standards may vary, some similar materials include:

GOST 8734-78 15XM seamless pipes are an excellent choice for high-temperature and high-pressure applications, providing durability, heat resistance, and reliability. They are essential in industries like power generation, oil and gas, and chemical processing