Carbon steel pipes are used for fluid transmission, structural support, mechanical applications, and industrial piping systems. We supply seamless steel pipes conforming to ASTM A106 Grade B, ASTM A53 Grade B, API 5L Grade B/X42/X52/X65, and GB 20# standards. Welded pipes including ERW, LSAW, and SSAW types are available for large diameter applications. Outer diameter range from 21.3mm to 1220mm, wall thickness from 2.0mm to 60mm.
LSAW (Longitudinal Submerged Arc Welded) steel pipe is a large-diameter, high-strength welded pipe manufactured from steel plates. Renowned for excellent weld quality and dimensional precision, it is the standard choice for major oil/gas transmission pipelines, offshore projects, water lines, and heavy structural applications.
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ERW steel pipe is a high-frequency welded carbon steel pipe offering excellent dimensional accuracy and cost-efficiency. It is widely used for low-to-medium pressure fluid transport, structural applications, and general construction.
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GB 20# is a widely used seamless carbon steel pipe under GB/T 8163/8162 standards, offering reliable strength with excellent weldability and plasticity. It is the premier choice for fluid transport, mechanical structures, and low-pressure boiler systems.
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EN 10210 S355JRH is a hot-finished structural hollow section offering 355 MPa minimum yield strength and 27J impact toughness at 20°C. Ideal for large-scale building frames, bridges, and offshore structures requiring high load capacity and dimensional stability.
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API 5L X65 is a high-strength carbon steel line pipe standard (L450) for oil, gas, and water transmission. Offering a minimum yield strength of 450 MPa, it is available in PSL1 and PSL2 specifications with excellent weldability and high-pressure containment.
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API 5L X52 is a high-strength carbon steel line pipe standard (L360) for oil, gas, and water transmission. Offering a minimum yield strength of 360 MPa, it is available in PSL1 and PSL2 specifications with excellent weldability and high-pressure containment.
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API 5L X42 is a high-strength carbon steel line pipe standard (L290) for oil, gas, and water transmission. Offering a minimum yield strength of 290 MPa, it is available in PSL1 and PSL2 specifications with excellent weldability and pressure containment.
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API 5L Grade B is a premier carbon steel line pipe standard for oil, gas, and water transmission. Offering a minimum yield strength of 245 MPa (L245), it is available in PSL1 and PSL2 specifications with excellent weldability and pressure integrity.
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ASTM A53 Grade B is a versatile carbon steel pipe standard for mechanical, pressure, and general structural applications. Available in ERW (Type E) and Seamless (Type S) versions, it offers 240 MPa yield strength and excellent weldability for water, gas, and steam lines.
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ASTM A106 Grade B is a seamless carbon steel pipe designed for high-temperature service in power plants, refineries, and petrochemical facilities. Available in NPS 1/2 inch to NPS 26 inch with multiple wall thickness schedules. Mill test certificate provided.
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API 5L X42 is a high-performance pipeline steel plate (290 MPa yield) engineered for reliable service in oil, gas, and water transportation systems under API Spec 5L standards.
View Details →Overview of LSAW Steel Pipe LSAW (Longitudinal Submerged Arc Welded) steel pipe is a premium-grade welded pipe manufactured by bending and welding steel plates or coils. The process involves forming the plate into a cylindrical shape and then welding the…
Overview of ERW Steel Pipe ERW (Electric Resistance Welded) steel pipe is a high-frequency welded carbon steel pipe manufactured by rolling steel coils and welding the seam using the resistance heating effect. As a cost-effective alternative to seamless pipes, ERW…
Overview of GB 20# Seamless Steel Pipe GB 20# is a premier carbon steel grade specified under the Chinese national standard GB/T 8163 (for fluid service) and GB/T 8162 (for structural service). As one of the most widely utilized seamless…
Overview of EN 10210 S355JRH Steel Pipe EN 10210 S355JRH is a premier hot-finished structural steel hollow section specified under the European standard EN 10210-1 and EN 10210-2. The designation ‘S’ stands for Structural steel, ‘355’ represents the minimum yield…
Overview of API 5L X65 Steel Pipe API 5L X65 (also designated as L450) is a high-performance, high-strength carbon steel line pipe grade specifically engineered for critical oil, natural gas, and water transmission systems. As an elite grade within the…
Overview of API 5L X52 Steel Pipe API 5L X52 (also designated as L360) is a high-strength carbon steel line pipe grade engineered for the efficient transportation of oil, natural gas, and water under elevated pressures. As a prominent high-yield…
Overview of API 5L X42 Steel Pipe API 5L X42 (also designated as L290) is a high-performance carbon steel line pipe grade specified by the American Petroleum Institute for the efficient transportation of oil, gas, and water. Positioned as a…
Overview of API 5L Grade B Steel Pipe API 5L Grade B (also designated as L245) is the primary industry standard for line pipes used in the transportation of oil, gas, and water. Specified by the American Petroleum Institute, this…
Overview of ASTM A53 Grade B Steel Pipe ASTM A53 Grade B is a standard carbon steel pipe grade specified under the ASTM A53 / A53M norm, widely recognized as the versatile workhorse for general industrial and structural applications. It…
Overview of ASTM A106 Grade B Seamless Steel Pipe ASTM A106 Grade B is the most widely used seamless carbon steel pipe specification for high-temperature service applications worldwide. It is manufactured under ASTM A106/A106M standard and is specifically designed to…
Overview of API 5L X42 Pipeline Steel Plate API 5L X42 is a high-quality pipeline steel grade specified under the American Petroleum Institute (API) Spec 5L standard. Also known as L290 (based on its 290 MPa minimum yield strength), X42…
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