Hebei Huayang Steel Pipe Co., Ltd is one of the leading manufacturers and suppliers of dn300 sch40 erw steel pipe in China. Please feel free to buy cheap dn300 sch40 erw steel pipe from our factory. All customized products are with high quality and low price.
Precise Dimensions, Stable Manufacturing
DN300 SCH40 ERW steel pipe is a common and widely used specification in industrial conveying systems. With a nominal diameter of 300mm and a wall thickness of approximately 7.8mm, it provides sufficient strength while balancing affordability. Huayang Steel Pipe utilizes automated high-frequency welding production lines, continuous forming, and online internal and external weld inspection technology to ensure uniform wall thickness and smooth welds on every pipe. Whether used for conveying water, gas, or steam, or as structural support components, the DN300 specification has earned market recognition for its excellent pressure-bearing performance and dimensional accuracy.
Performance Guarantee under the SCH40 Standard
SCH40 is a commonly used wall thickness standard, representing medium-pressure steel pipe. Huayang uses high-quality carbon steel, undergoes high-frequency resistance welding, and undergoes precision heat treatment to ensure that the welds maintain consistent mechanical properties with the parent material. Each pipe undergoes eddy current testing and hydrostatic testing to ensure long-term leakage and deformation resistance. The pressure-bearing performance of this steel pipe meets the diverse demands of industrial water supply, HVAC, fire protection, and low-pressure oil and gas transportation, making it a proven solution that combines safety and cost-effectiveness.
A versatile solution for various applications
DN300 SCH40 ERW steel pipe has extensive applicability in engineering practice. It is commonly used in municipal water supply trunk lines, plant circulating water systems, industrial steam transmission networks, and steel structure columns and supports. Huayang Steel Pipe's products have been used in power plants, chemical parks, and infrastructure projects across China, demonstrating excellent dimensional accuracy and weld smoothness during on-site installation. For international customers, Huayang also offers anti-corrosion treatment options, including 3PE, epoxy powder coating, and hot-dip galvanizing, to extend service life.
Huayang's Quality Guarantee
As a leading ERW steel pipe manufacturer in Hebei Province, Huayang boasts over 40 high-frequency welding production lines with an annual production capacity exceeding 1.5 million tons. Its products cover a full range of specifications, ranging from 73 to 660.4 mm in diameter and with wall thicknesses of 2.5 to 22 mm. DN300 SCH40 ERW steel pipe is one of our stable models, with long-term export to the Middle East, Southeast Asia, South America, and Africa. The company implements multiple quality certifications, including ISO, API, and CE, and conducts thorough inspections from raw materials to finished products. In addition to standard pipes, Huayang also offers integrated services such as cut-to-length, beveling, and painting and marking according to customer drawings, ensuring that each steel pipe precisely meets project requirements.
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