Details about GOST 20295 SSAW steel pipes

GOST 20295 SSAW steel pipes are essential components in industries such as oil and gas, water transportation, construction, and infrastructure development. Governed by Russia’s GOST (State Standard) system, this specification ensures that the pipes meet rigorous standards for mechanical properties, chemical composition, and overall performance.

In this guide, we’ll take a closer look at GOST 20295 Spiral Welded Pipe and its applications.

Union Steel Industry Co., Ltd is professional SSAW steel pipe manufacturer, for more details, please contact:sales@union-steels.com

GOST 20295 SSAW Steel Pipe Specifications & Standards

To meet GOST 20295 requirements, spiral welded pipes must adhere to strict specifications.

Thanks to stringent specifications, GOST 20295 spiral welded pipes offer excellent strength, durability, and corrosion resistance. These qualities make them particularly well-suited for demanding applications in oil & gas pipelines and water transmission systems.

GOST 20295 SSAW Steel Pipe: Welding and Manufacturing Process

The production of GOST 20295 spiral welded pipes adheres to a rigorous manufacturing protocol to ensure exceptional mechanical performance, long-term reliability, and compliance with both Russian and international standards. Here’s an overview of the key stages in the process:

Steel Coil Selection
High-quality carbon steel is chosen to meet the requirements of GOST 20295.
Common steel grades include GR B, X42, X52, X60, X70, and X80.

Spiral Forming
Steel strips are fed into a forming machine and shaped into a continuous spiral.
The resulting helical seam distributes stress evenly—an ideal feature for high-pressure pipeline applications.

Submerged Arc Welding (SAW)
Double-sided submerged arc welding (DSAW) is used for deep weld penetration and robust joint strength.
This technique significantly enhances structural integrity and minimizes welding defects.

Non-Destructive Testing (NDT) & Quality Assurance

Ultrasonic Testing (UT): Identifies surface and internal flaws.

X-ray Inspection: Verifies weld consistency and strength.

Hydrostatic Testing: Confirms the pipe’s ability to withstand internal pressure without leakage or failure.

Coating and Corrosion Protection
Pipes are treated with protective coatings such as Fusion Bonded Epoxy (FBE), Three-Layer Polyethylene (3LPE), or cement mortar lining to enhance corrosion resistance.

Final Inspection and Certification
Each pipe undergoes thorough checks for dimensional accuracy, mechanical performance, and coating quality.
Products are certified according to GOST 20295 and ISO 9001 standards, ensuring reliable performance in the field.

Welding Methods Used In GOST 20295 SSAW Steel Pipes