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Company's products: Welded Steel Pipe / Seamless Steel Pipe / OCTG / Structural Steel Section / Stainless Steel Pipe / Alloy Steel Pipe / Coating Steel Pipe / Steel Metal / Pipe Fittings / Specical Products
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North Steel Manufacturing Co., Ltd.
Established in 1989, North Steel Manufacturing Co., Ltd. brings 36 years of profound industry expertise. We specialize in manufacturing a wide range of high-end steel pipes and products, boasting an impressive annual capacity of 150,000 tons. Our portfolio spans 10 major categories, including Welded Steel Pipe, Seamless Steel Pipe, and OCTG, serving 6 core sectors such as Oil & Gas, Water Supply, Construction, Offshore & Marine, Power Energy...
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With an annual capacity of 150,000 tons and 36 years of stable operation, we guarantee on-time delivery for large-volume orders, providing a solid foundation for your project's supply chain.
What Is Welded Steel Pipe Used For? | Top 10 Industrial Applications
Welded steel pipe is a high-efficiency engineering solution manufactured by cold-forming steel plate or coil into a tubular shape and joining the seam via longitudinal or spiral welding. Known for its superior strength-to-weight ratio, dimensional precision, and cost-effectiveness, it serves as the "circulatory system" of modern industry.
Does Steel Lose Strength When Welded? The Science of HAZ & Quality Assurance
"Does welding make steel weaker?" In the world of industrial procurement and structural engineering, the answer isn't a simple yes or no—it’s a matter of metallurgy and process control.
12-27
2025
Is Schedule 40 Pipe Stronger Than Schedule 80? Clearing Up the Confusion
In piping procurement, the comparison between Schedule 40 vs. Schedule 80 is one of the most frequent—and misunderstood—topics. While many simply claim "Schedule 80 is stronger," this is an oversimplification that can lead to costly over-engineering or dangerous selection errors.
12-26
2025
Does Welded Steel Rust? The Science of Corrosion & Anti-Corrosion Solutions
A common concern among engineers and procurement officers is: "Will welded steel pipe rust over time?" The short answer is: like all carbon steel, it is susceptible to oxidation—but with modern metallurgy and advanced coating technologies, rust is a preventable risk, not an inevitable outcome.
12-25
2025
Seamless vs Welded Steel Pipe: Key Differences, Comparison & Selection Guide
In industrial piping, the debate between seamless vs welded steel pipe is more than just about cost—it’s about matching material integrity with operational safety. Choosing the wrong pipe can lead to catastrophic system failure, excessive project costs, or non-compliance with international standards.
12-24
2025
What Does ERW Stand For in Pipe? Demystifying High-Frequency Electric Resistance Welding
In the steel pipe industry, ERW stands for Electric Resistance Welding. It is one of the most versatile and efficient manufacturing processes used to produce high-quality longitudinal weld pipes.
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