Products

Thin Wall Black Seamless Steel Pipe is a lightweight carbon steel pipe designed for low-pressure and precision piping applications. Produced through hot rolling or cold drawing processes, it features a seamless structure, smooth inner surface, accurate dimensions, and a natural black oxide scale finish without additional coating treatment. With excellent machinability and cost efficiency, it is widely used in instrument lines, equipment connections, mechanical parts, and indoor piping systems. ZHONGTIAN offers customized solutions with flexible material, size, and processing options.

Thick Wall Black Seamless Steel Pipe is designed for heavy-duty applications where high load capacity and pressure performance are required. Made from carbon or alloy steel, it offers a robust thick wall structure, reliable strength, and excellent durability while maintaining a natural black surface for flexible fabrication and further processing. It is widely applied in machinery, hydraulic equipment, energy, and structural engineering projects.

Hot Dip Galvanized Hot Rolled Seamless Steel Pipe is manufactured from hot rolled seamless steel pipe with a protective zinc coating for enhanced corrosion resistance and durability. Featuring high strength, excellent pressure performance, and long service life, it is widely used in fire protection systems, industrial pipelines, water supply, oil and gas transportation, and structural applications.

Hot Dip Galvanized Spiral Steel Pipe is a corrosion-resistant spiral welded steel pipe manufactured by applying a hot dip galvanized coating to SSAW steel pipe. The pipe is produced from Q235B, Q345B, or pipeline-grade steel through spiral forming and double-sided submerged arc welding, then immersed in molten zinc at approximately 440–460℃ to create a zinc-iron alloy layer and protective zinc coating. Compared with uncoated black spiral welded steel pipe, it provides better resistance to moisture, soil corrosion, and outdoor exposure, making it suitable for municipal water systems, agricultural irrigation, industrial pipelines, and outdoor engineering structures. ZHONGTIAN supplies customized galvanized spiral steel pipes with different diameters, wall thicknesses, materials, and coating requirements.

Black Spiral Welded Steel Pipe, also known as Black SSAW Steel Pipe, is a double-sided submerged arc welded spiral pipe supplied without coating or surface treatment. It offers flexible specifications, reliable strength, and cost-effective performance for piling, structural projects, and industrial pipeline applications. ZHONGTIAN provides customized solutions with various diameters, wall thicknesses, and steel grades.

Small Diameter Spiral Welded Steel Pipe is a spiral welded steel pipe manufactured through spiral forming and double-sided submerged arc welding technology. With diameters generally below DN800, it features flexible specifications, reliable weld quality, and good structural strength. It is widely used in municipal pipelines, industrial systems, water projects, and construction applications. ZHONGTIAN provides customized SSAW steel pipe solutions as a professional manufacturer in China.