API 5L GR.B 200MM DIAMETER SEAMLESS STEEL PIPE

Seamless Carbon Steel Pipes – High-Performance Tubing for Industrial Fluid Transport and Structural Applications Engineered to meet the most rigorous demands of global infrastructure, these seamless carbon steel pipes offer unmatched strength, durability, and adaptability across diverse industrial sectors. Designed for high-pressure fluid conveyance and critical load-bearing applications, they are manufactured using advanced techniques such as hot rolling, cold drawing, and hot expansion—ensuring consistent mechanical properties, minimal dimensional deviation, and superior fatigue resistance over time. Compliant with internationally recognized standards including ASTM A53, A106, API 5L, DIN 17175, EN 10216, and more, these tubes deliver reliable performance in energy systems, construction projects, agricultural networks, and heavy machinery manufacturing. Key Features: - Seamless construction eliminates weld-related vulnerabilities, enhancing burst pressure tolerance and ensuring leak-free operation throughout extended service life - Diameter range from 17mm to 914.4mm with ±10% wall thickness accuracy for precise integration into complex piping systems - Available in grades Q235 through X80 (PSL1 & PSL2), supporting low-pressure distribution lines to high-stress structural components - Custom end treatments: plain cut, beveled, threaded, or capped with protective sleeves for safe handling and installation - Corrosion-resistant surface finishes such as galvanized, FBE (Fusion Bonded Epoxy), 2PE, 3PE, or varnish tailored to environmental exposure conditions Detailed Description: Manufactured from premium-grade carbon steel alloys like STPG370, ST37, ST52, and API-compatible variants including X42–X80, these seamless tubes combine lightweight efficiency with exceptional load capacity. Their uniform circular cross-section ensures optimal flow dynamics while evenly distributing internal and external stresses—outperforming solid bars and welded alternatives in both hydraulic systems and structural frameworks. The absence of seams significantly improves resistance to cyclic loading, making them ideal for applications involving repeated thermal or mechanical stress, such as boiler feed lines, condensate return systems, and rotating equipment parts. With a monthly production capacity of up to 15,000 tons, suppliers ensure consistent quality and timely delivery even for large-scale international orders. Whether used in temporary scaffolding, permanent building supports, irrigation networks, or heavy machinery assemblies, these pipes provide long-term value through reduced maintenance, extended service life, and ease of installation. Applications: These versatile tubes are widely adopted in pipeline systems for crude oil, natural gas, potable water, compressed air, and chemical transfer. In power generation facilities, they serve as boiler tubes, steam headers, and condenser connections where thermal cycling is frequent. Petrochemical plants rely on them for process piping that must endure aggressive media under elevated temperatures. Agricultural engineers specify them for drip irrigation systems due to their resilience against soil abrasion, UV exposure, and ground movement. Mechanical designers also favor them for precision components like bearing rings, hydraulic jacks, and drive shafts where dimensional stability and torsional rigidity are essential. User Feedback: Global users consistently highlight the uniform wall thickness, smooth finish, and effective corrosion protection when coated appropriately. Clients operating in coastal regions, arid climates, and industrial zones report fewer maintenance issues and longer operational lifespans compared to alternative materials. Many appreciate the compatibility with standardized couplings and anti-rust coatings that simplify assembly and reduce downtime during deployment in marine or humid environments. These pipes have become a trusted choice for engineers seeking dependable, long-lasting solutions across complex engineering challenges. Common Questions: Why choose seamless over welded carbon steel pipes? The continuous metal structure without weld joints provides higher tensile strength, improved impact resistance, and better performance under repeated stress cycles—critical for applications involving high-pressure fluid transport or mechanical vibration. Are these pipes suitable for drinking water systems? Yes, when finished with food-safe epoxy or polyethylene linings, they meet sanitary standards for potable water conveyance and are commonly used in municipal supply networks. Can I request custom lengths or specialized coatings? Absolutely—options include fixed-length cuts, random lengths, and enhanced protective layers such as dual-layer (2PE) or triple-layer (3PE) polyethylene coatings for maximum resistance to soil stress, moisture ingress, and cathodic disbondment. How do I confirm compliance with local regulations? Each batch includes mill test certificates verifying adherence to applicable international specifications such as ASTM, EN, ISO, or regional codes—simply indicate your country’s requirements during procurement for guaranteed conformity.