Name: China GOST 550-2020 15X5M Seamless Steel Pipe Manufacturers Suppliers Factory - Shenzhoutong Steel Pipe
Brand: Shenzhoutong
SKU: 299440866

GOST 550-2020 15X5M Seamless Steel Pipe is manufactured according to Russian standard GOST 550-2020 (Seamless steel pipes for petroleum processing and petrochemical industries). The primary material is a chromium-molybdenum alloy steel specifically designed for high-temperature, high-pressure, and corrosive service environments

Steel Constructural ASTM A572 ERW Welded Black Crabon Steel Pipe LTCS ASTM A333 Gr6 Seamless Steel Pipe

Material Characteristics

GOST 550-2020 15X5M Chemical composition:

C ≤0.15%, Si ≤0.5%, Mn ≤0.5%, S ≤0.025%,P ≤0.030%, Ni ≤0.6%, Cr 4.5%~6.00%, Mo 0.45%~0.60%.‌

This composition grants the material excellent properties:

‌High-Temperature Strength and Stability:‌

Maintains structural integrity and strength at elevated temperatures.

‌Oxidation and Corrosion Resistance:‌

Good resistance to oxidation, sulfur corrosion, hydrogen and hydrogen sulfide corrosion, and organic acid corrosion.‌

‌Mechanical Properties (at room-temperature):

Tensile Strength ≥392 MPa, Yield Strength ≥216 MPa, Elongation ≥22%, hardness ≤197 HB.

Manufacturing Process

GOST 550-2020 15X5M pipes are produced as seamless tubes.

The manufacturing process typically involves heating a round steel billet to approximately 1200°C, followed by piercing to form a hollow shell.

This is then further processed through hot rolling (or cold drawing for higher precision) to achieve final dimensions, followed by sizing, cooling, straightening, and non-destructive testing.‌

They are commonly supplied in black (non-coated) condition.‌

Advantages and Applications

GOST 550-2020 15X5M seamless steel pipes offer distinct advantages for specific industries:

‌Petroleum Refining & Petrochemicals:‌ Ideal for piping systems handling high-temperature processes, sulfur, hydrogen, and organic acids due to its superior corrosion resistance and thermal strength.‌

‌Power Generation (Boilers):‌ Suitable for high-pressure boiler tubes and reheater sections where long-term exposure to high heat and pressure is required.

‌High-Temperature Service:‌ Recommended for applications where the operating temperature consistently exceeds 500°C, providing reliable performance and extended service life compared to standard carbon steels.