EN10217 Carbon Round Steel Pipe

ERW steel pipes are a widely used high-quality pipe material with unique advantages. Their materials include high-quality carbon steel and low-alloy steel. High-quality carbon steel provides the basic strength, while low-alloy steel enhances the comprehensive performance, such as good corrosion resistance and fatigue resistance, making them adaptable to various working conditions. Huayang's ERW steel pipes come in a wide range of specifications, with outer diameters ranging from 76 to 660 millimeters and wall thicknesses from 2.5 to 20 millimeters. This diverse combination of specifications meets the needs of various projects, from ordinary water and gas transmission to high-pressure fluid transportation. During production, high-frequency current's resistance heat effect is utilized for welding, which ensures fast welding speed and high weld quality, guaranteeing the pipe's sealing and overall stability. This makes them reliable in numerous fields such as building structure support, oil pipeline laying, and mechanical manufacturing, providing a solid material foundation for the development of various industries.

ERW steel pipes follow international standards such as API 5L and GB/T 3091, ensuring high quality and reliability of the products. These standards have clear regulations on dimensions, shapes, weights, technical requirements, etc., guaranteeing the application performance of ERW steel pipes in oil and gas transmission pipelines. These standards have strict requirements on the chemical composition, mechanical properties, surface quality, etc. of steel pipes to adapt to different engineering environments and usage requirements.

ERW steel pipes usually use low C, low P, low S raw materials, and through micro-alloying smelting and off-furnace refining technology, to ensure high strength and good plasticity. Its tensile properties meet API standards, and the strength and plasticity indicators are usually higher than the standard, thanks to the strict control of raw materials and advanced production processes. ERW steel pipe has fine grain structure, no columnar crystal region, loose shrinkage, small composition deviation and dense structure, which makes ERW steel pipe have better impact toughness and pressure resistance. In addition, the wall thickness uniformity of ERW steel pipes can be controlled within a high precision range, high dimensional accuracy, smooth and flat surface, and these characteristics make ERW steel pipes superior to seamless steel pipes in pressure resistance and installation efficiency. Modern ERW steel pipe production process is also increasingly focused on environmental protection and sustainability, the use of environmentally friendly materials and green production processes, reduce the use of harmful substances and emissions to meet the market demand for environmentally friendly products.

The ERW steel pipe inspection process includes on-line non-destructive testing, internal weld structure analysis, destructive testing (flaring and flattening) and hydraulic testing. Non-destructive testing mainly uses ultrasonic detection technology to detect internal defects of steel pipes, such as longitudinal injury, transverse injury and heat-affected zone sandwich wall thickness, pipe body and pipe end sandwich wall thickness. Destructive tests and hydraulic tests verify the bearing capacity of the steel pipe and the stability of the weld. These inspection processes ensure the compliance of ERW steel tubes in mass production and quality assurance, and meet the relevant standards.