Seamless Steel Pipes Without Painting | Reliable Supplier for Oil, Gas & Industry

        Seamless steel pipes without painting are widely adopted in industrial and engineering fields due to their complete structure, stable pressure-bearing performance, and convenience for subsequent surface treatment. Seamless tubes are formed from solid billets through piercing or extrusion into hollow tube blanks, which are then processed by hot rolling or cold drawing. Compared to welded pipes with longitudinal seams, seamless pipes are more suitable for high-pressure and high-temperature applications.

        Ⅰ. Primary manufacturing process

        Hot piercing and rolling process: After heating solid steel billets, they are pierced to form hollow billets, which are then further rolled into shape.

        Extrusion forming process: Tubes are extruded under the action of a mandrel and a die.

        Different processes affect the microstructure, dimensional tolerances, and mechanical properties of the tubes, so it is necessary to confirm the production process and heat treatment status with the supplier when purchasing.

    

        Ⅱ. The wide range of application fields

        Seamless steel pipes without coating, due to their superior strength and adaptability, are widely used in:

        1) Oil and gas long-distance pipelines

        2) Boilers and heat exchange systems

        3) Machinery structural components and engineering equipment

        4) High-pressure fluid transmission and chemical piping

        In these fields, engineering selection must consider diameter, wall thickness, material, tolerance, and standards, along with rigorous quality inspection.

        Ⅲ. Quality assurance and service support

        Metal Company strictly controls the chemical composition and mechanical properties of seamless steel pipes, providing complete material test certificates (MTC) and third-party inspection reports to ensure that products meet international standards. The company also supports sample testing and custom services, and offers technical consultation and after-sales support to help projects advance efficiently.