English
Welded steel pipes are formed by bending steel plates or strips into shape and joining them through welding processes. They are used for transporting fluids (such as water, oil, and gas), providing structural support (e.g., in buildings and bridges), and in mechanical manufacturing. Pipes for Welding are characterized by high strength, low cost, and efficient production, making them widely used in industries, construction, and energy sectors.
Specifies standards for welded and seamless steel pipes used in the oil and gas industry.
Covers seamless and welded black steel pipes, commonly used for mechanical and pressure applications.
Applies to welded steel pipes used as piles for foundation support in construction.
Specifies requirements for cold-formed welded structural hollow sections (steel pipes) used in construction and engineering projects in Europe.
Provides international standards for steel pipes used in pipeline transportation systems.
Defines dimensions and standards for welded and seamless wrought steel pipes, commonly used in high-pressure and high-temperature applications.
Welded steel pipes are made from various materials and grades, including carbon steel, low-alloy steel, and stainless steel. Common standards and grades include:
Carbon Steel Welded pipes: ASTM A53 (Grade A/B), API 5L (Grade B/X42/X70), used for low-pressure fluid transport and structural purposes.
Low-Alloy Steel Welded pipes: ASTM A335 (P11, P22, P91), known for high-temperature strength, used in boilers and petrochemical equipment.
Stainless Steel Welded pipes: ASTM A312 (304/304L, 316/316L), offers excellent corrosion resistance, suitable for chemical, food, and medical industries.
Special Materials Welded pipes: Duplex stainless steel (2205), nickel alloys (Inconel), used in extreme corrosion or high-temperature environments.
