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The manufacturing process of ERW (Electric Resistance Welded) pipes in our factory leverages the skin effect principle generated by high-frequency current. This technique heats the edges of hot-rolled coils until they reach a molten state, enabling mechanical extrusion welding. As a result, ERW pipes feature a distinct white fusion line at the center of each weld, with metal flow lines extending from the fusion line towards the inner and outer surfaces of the pipe. The quality and performance of the weld seam are significantly influenced by the properties of the base material used. In our extensive range of ordinary materials, the Charpy impact test reveals minimal differences in absorbed energy values between the weld and the base metal. In contrast, high-toughness materials exhibit a pronounced disparity where the weld’s impact toughness is notably lower than that of the base metal, yet still surpasses that of welds in standard materials. As a leading supplier in China, we are committed to delivering high-quality ERW pipes with superior performance and reliability.

Galvanized Steel Sheets from our China Factory: To enhance the durability and prevent corrosion, our high-quality galvanized sheets feature a protective layer of metallic zinc on their surface. This advanced method significantly extends the lifespan of the steel sheets.

Hot Dip Galvanizing Process: Our galvanized steel sheets are produced using the hot dip galvanizing technique, where thin steel sheets are immersed in a molten zinc bath to ensure a robust zinc coating. As reliable suppliers in the industry, we utilize a continuous galvanizing method, immersing rolled steel sheets continuously for superior quality galvanized products.

A square tube is a durable steel bar featuring a hollow interior and a distinctive square cross-section. As one of the leading products manufactured in China, square tubes are popular among construction and industrial applications due to their exceptional resistance to corrosion, rust, and stains. These tubes are engineered to withstand harsh conditions, including exposure to acids, saltwater, and various chemicals.

There are two main categories of square tubes: seamless steel pipes and welded steel pipes. Seamless steel pipes are crafted without any welds, ensuring a smooth and uninterrupted composition. In contrast, welded steel pipes are produced by bending a steel plate into a square shape and then expertly welding it to form a seam along the pipe's body. As trusted suppliers of both types, our factory prioritizes quality and reliability in every product we deliver.