Changsha Xiangjia Metal Materical Co., Ltd.

Steel pipes with a nominal diameter (DN) exceeding 1000mm are essential for high flow and high pressure scenarios. The production of these pipes is complex and demands superior material strength and weld quality to ensure reliability in various applications. Applications of  Large Diameter SSAW Steel Pipes 1. Hydraulic Hub Projects One of the primary applications of large diameter SSAW steel pipes is in hydraulic hub projects. A notable example is the South-to-North Water Diversion Project in China, where DN2200 SSAW steel pipes are utilized for the main channel pressure pipeline. These pipes, with a wall thickness reaching up to 20mm, utilize double-sided submerged arc welding technology to ensure they can withstand high pressure. Furthermore, these pipes must undergo hydrostatic testing at 1.5 times the design pressure and require anti-corrosion coatings (such as 3PE) to enhance their longevity. 2. Offshore Platforms and Port Construction Another critical use of large diameter SS...

Black steel pipe   is a type of piping made from low-carbon steel, characterized by its distinctive dark appearance. This aesthetic is due to a black oxide scale that forms on the surface during the manufacturing process. Typically, black steel pipes are supplied as unprocessed round pipes, primarily focused on surface finish rather than having a protective coating. Why Choose Black Steel Pipe? 1. Strength and Durability: Black steel pipes are known for their outstanding strength, making them capable of enduring high-pressure environments. This durability ensures safety and longevity in any application. 2. Variety of Sizes and Thicknesses: Available in a range of sizes and thicknesses, black steel pipes provide versatility for varied construction and installation needs. Whether you’re working on a small residential project or a large industrial installation, there’s a suitable option available. 3. Economic: The cost-effectiveness of black steel pipes makes them a popular choice amo...