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CN Steel Piping Engineering Co., Limited is a trusted manufacturer and exporter of seamless steel pipes, API 5L line pipes, OCTG products, stainless steel tubes, and alloy tubing, serving energy, construction, water treatment, and industrial sectors worldwide.
API 5L & ASTM Certified
Quality assured for global standards
With years of expertise in steel pipe manufacturing, CN Steel Piping Engineering Co., Limited has established itself as a reliable partner for high-quality piping solutions across diverse industries. We specialize in the production of seamless and welded steel pipes, tubing, casing, and related steel products that meet international standards.
Our commitment to excellence begins with rigorous raw material inspection and continues through every stage of production, quality control, and packaging. We serve clients in oil & gas, water treatment, power generation, construction, and industrial manufacturing sectors around the world.
50+
Global Projects
20+
Countries Served
99.8%
Quality Pass Rate
We manufacture and supply a comprehensive range of steel pipes and tubes that comply with international standards including API, ASTM, BS, DIN, and EN specifications.
High-strength seamless and welded line pipes for oil, gas, and water transmission pipelines. Available in Grades B, X42, X52, X60, X65, X70, and X80.
High-temperature carbon steel seamless pipes for pressure systems in power plants, refineries, and process industries.
Premium connections and high-collapse resistance tubing and casing for oil and gas well drilling and completion.
Seamless and welded austenitic stainless steel pipes for corrosive and high-purity environments.
Precision tubes for high-pressure and high-temperature applications in power and industrial plants.
Wide range of structural and carbon steel products for construction and engineering.
High-frequency welded (HFW), submerged arc welded (SAW), and electric resistance welded (ERW) pipes.
Comprehensive range of forged, butt-weld, and threaded fittings for pipeline systems.
Our integrated quality management system, advanced manufacturing capabilities, and customer-focused approach ensure reliable delivery of high-performance piping solutions.
Every steel billet and raw material undergoes comprehensive chemical analysis and visual inspection to detect surface defects such as pits, cracks, and blowholes before production begins.
We perform non-destructive testing including Ultrasonic, Eddy Current, Magnetic Particle, Radiography, and Positive Material Identification to ensure defect-free products.
Pipes are bundled with protective fabric, secured with steel straps and nylon slings. Precision components are packed in plywood boxes for safe global shipment.
Our piping solutions have been trusted in critical infrastructure and industrial projects worldwide.
Supplied over 5,000 tons of API 5L X60 line pipes with 3LPE coating for a major municipal water infrastructure upgrade in Southeast Asia.
Delivered 12-inch to 48-inch API 5L X70 pipes with 3-layer polyethylene coating for a cross-desert oil transmission pipeline.
Provided welded steel pipes for a national water transfer project, ensuring corrosion resistance and long-term reliability.
Supplied stainless steel pipes (ASTM A312) for a high-purity drinking water distribution network in Northern Europe.
Contact CN Steel Piping Engineering Co., Limited for product inquiries, technical specifications, or custom solutions.
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