Hot Expanded
Seamless Steel Pipe – Premium Carbon Steel Tubing for Industrial & Infrastructure Projects Worldwide Engineered for performance, precision, and versatility, hot expanded seamless
Steel Pipe is a high-quality carbon steel solution designed to meet the demanding needs of global industrial applications. Unlike conventional manufacturing methods, this innovative process begins with a pre-formed seamless tube blank—typically created via rotary piercing or pressure perforation—followed by controlled thermal expansion at elevated temperatures. This technique allows for precise reduction in wall thickness while maintaining structural integrity, making it ideal for producing custom-sized thin-walled tubes that standard rolling processes cannot achieve efficiently. The resulting product delivers superior mechanical properties including enhanced tensile strength, uniform wall consistency, and excellent dimensional accuracy across a wide range of sizes—from DN6" to DN36" outer diameter and wall thicknesses ranging from 4mm to 40mm. With production capacity reaching up to 30,000 metric tons per month, manufacturers ensure reliable supply for large-scale infrastructure, energy, and construction projects worldwide. Whether used in oil and gas transmission systems, steam distribution networks, or structural frameworks, these pipes offer an economically viable alternative without compromising on durability or safety. Key Features: - Precision-engineered dimensions for consistent wall thickness and accurate bore tolerances - Cost-effective production method compared to traditional seamless pipe fabrication - High tensile strength suitable for medium-pressure fluid transport (e.g., water, steam, coal gas) - Multiple surface finishes available: black paint, anti-rust oil, galvanizing, and 3PE coating - Compliant with international standards such as ASTM A106, API 5L, EN 10216, DIN 2448, BS 1387, and GB/T 8163 This material is commonly known as black seamless steel pipe due to its typical finish but offers far more than just appearance—it’s engineered for long-term service life, weldability, and resistance to environmental degradation. Its adaptability makes it a preferred choice in pipeline engineering, especially where customized specifications are required. Available in various schedules (SCH10 to SCH160), lengths up to 12 meters, and customizable packaging options like steel bundles or woven bags, it supports efficient logistics and handling across diverse markets. Ideal Applications: - Industrial piping systems for chemical processing plants - Low-to-medium-pressure steam and water lines in power generation facilities - Structural support elements in bridge and building frameworks - Oil and gas transportation pipelines requiring corrosion-resistant materials - Municipal infrastructure projects involving potable water or wastewater conveyance Global users have consistently praised the reliability and cost-efficiency of hot expanded seamless steel pipe, particularly in regions where high-performance tubing must be delivered at competitive pricing. Engineers appreciate the minimal material waste during fabrication, consistent quality control, and flexibility in tailoring both physical dimensions and protective coatings to suit specific project requirements. The ability to comply with international codes such as ASME B36.10M and API 5L ensures safe integration into complex designs under varying operating conditions. Frequently Asked Questions: What distinguishes hot expanded seamless steel pipe from cold rolled seamless pipe? Hot expanded pipes undergo thermal treatment post-forming, enabling greater flexibility in size adjustments and lower manufacturing costs compared to cold rolling, which demands more energy and limits variation in final dimensions. Can I request non-standard sizes or specialized surface treatments? Yes, our facility supports bespoke orders—including custom wall thicknesses, diameters, and advanced coatings like hot-dip galvanizing, epoxy resin layers, or triple-layer polyethylene (3PE) protection—tailored to client needs and industry-specific standards. Is this pipe suitable for offshore or high-pressure environments? While primarily intended for low to medium-pressure applications, certain grades combined with appropriate surface protection can be adapted for moderate-pressure scenarios when supported by proper engineering design and adherence to relevant codes like API 5L Grade B or ASME B36.10M. Delivery typically occurs within 20 days after deposit confirmation or letter of credit issuance. Each batch undergoes rigorous quality inspections using modern testing equipment to guarantee compliance with global norms and optimal field performance across all major industries.
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