Hebei Huayang Steel Pipe Co., Ltd is one of the leading manufacturers and suppliers of dn400 hfw carbon steel pipe in China. Please feel free to buy cheap dn400 hfw carbon steel pipe from our factory. All customized products are with high quality and low price.
DN400: A Mature Specification with Stable Bulk Supply
DN400 (outer diameter, 406.4mm) is one of the standardized medium- and large-diameter specifications Huayang Steel Pipe produces year-round, suitable for a variety of applications, including fluid transportation, structural support, and pile foundations. Wall thicknesses can be customized from 6mm to 12.7mm, with custom-length production and beveling available. This specification is a regular batch order on our HFW (High-Frequency Welded) pipe production line, ensuring excellent delivery and inventory availability, making it suitable for a wide range of municipal, industrial, and export projects.
High-Frequency Welding for Dense and Reliable Welds
Huayang utilizes advanced HFW welding technology to manufacture DN400 carbon steel pipes. The welds are created through electromagnetic induction heating and precision extrusion, resulting in high strength, a clean appearance, and a smooth interior. Each pipe undergoes ultrasonic testing, hydrostatic testing, and manual visual inspection before shipment. Weld X-ray reports can be provided upon request. Our HFW production line incorporates automated laser diameter measurement, online eddy current testing, and a fully automatic inkjet printer to ensure consistent weld quality and strong traceability across each batch of pipes.
Widely applicable, adaptable to diverse project needs.
DN400 HFW carbon steel pipe is widely used in oil and gas, urban water supply, fire protection systems, thermal engineering, structural support, and other fields. For example, in the El Galala Industrial Park infrastructure project in Egypt, DN400 corrosion-resistant carbon steel pipe was used in the construction of an underground integrated pipeline corridor. In the Zhoushan New District Chemical Park in Zhejiang Province, this type of pipe is used in the centralized chemical wastewater treatment pipeline. Its convenient installation and strong sealing performance ensure long-term safe operation.
Huayang Factory Direct Supply with Comprehensive Service Support
Huayang, located in Cangzhou, Hebei Province, has an annual production capacity of 2.6 million tons. The DN400 pipe is one of our most frequently exported medium-diameter pipes. We offer a variety of further processing services, including beveling, punching, welding flanges, painting, and 3PE/2PE corrosion protection. We also support customized export documentation, including English warranty documents, packing lists, and sea freight reinforcement plans. Our professional foreign trade team and factory-direct logistics solutions ensure rapid response and precise coordination, ensuring the smooth progress of various projects.
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