1. Brief Introduction (Brief introduction, suitable for product listings and homepage summaries)
双金属复合管

Steel Pipes / Longitudinal Submerged Arc Welded Steel Pipe
1. Brief Introduction (Brief introduction, suitable for product listings and homepage summaries)
双金属复合管
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1. Brief Introduction (Brief introduction, suitable for product listings and homepage summaries)
Bimetallic composite pipe is an essential pipeline component for fluid and medium transportation in engineering projects. It is fabricated by bonding two different types of metals together: the base layer made of high-strength pressure-resistant carbon steel ensures structural toughness and load capacity, while the inner cladding layer of stainless steel or duplex steel delivers excellent corrosion and wear resistance.
Manufactured via advanced positive spin hot-melt bonding technology, the pipe achieves an interlayer bonding strength of up to 16 MPa and avoids delamination or cracking during service. It requires no additional anti-corrosion coating, features low fluid transport resistance and low energy consumption, cuts long-term maintenance costs, and boasts outstanding environmental friendliness, making it applicable to various harsh working conditions.
2. Detailed Introduction (Detailed description, full version of the product detail page)
Overview
As the core carrier for fluid conveyance, bimetallic composite pipe is vital to the safe operation of pipeline projects. Unlike conventional single-metal steel pipes, it adopts a composite forming process to integrate two metals with distinct performance merits. The base material provides high tensile strength and toughness for pressure bearing, and the inner lining layer endows the pipe with corrosion resistance, high temperature resistance and wear resistance. Flexible material combinations are available to satisfy customized requirements of different engineering projects precisely.
Material Selection
Base Layer
The base layer bears pipeline pressure and guarantees overall structural rigidity and toughness. High-performance steel grades with superior mechanical properties are adopted, including Q235, Q355, 20# seamless steel pipe and X70 line pipe steel. Material selection can be adjusted flexibly according to actual working pressure, laying environment and load conditions of each project.
Cladding Overlay Layer
This functional inner layer is customized for anti-corrosion, anti-abrasion and high-temperature resistance. Stainless steel and duplex steel are the common choices, which can effectively resist erosion from acid, alkali, salt spray, seawater and other corrosive media and prevent pipeline leakage caused by inner wall corrosion.
Manufacturing Technology & Structural Reliability
The pipe adopts mature positive spin hot-melt composite technology to realize tight metallurgical combination between the base layer and cladding layer, with maximum bonding strength reaching 16 MPa. It fundamentally solves common defects of traditional lined pipes such as layer separation, cracking and lining slipping, greatly lowering failure rate and follow-up replacement & maintenance expenses.
Core Product Advantages
1. Superior Corrosion & Wear Resistance, Longer Service Life
The alloy lining effectively withstands severely corrosive media in chemical, marine and other scenarios. The reliable interlayer connection prevents lining falling off or failure, eliminating leakage risks and extending the whole service cycle of the pipeline system.
2. High Strength & Toughness, Wide Environmental Adaptability
The carbon steel base layer features strong pressure resistance, impact resistance and vibration resistance, suitable for high-pressure pipeline systems. It can withstand drastic temperature fluctuations and stably operate in frigid zones, tropical areas and high-altitude regions with strong geographic adaptability.
3. No Extra Anti-corrosion Coating Needed, Easy On-site Installation
Equipped with built-in anti-corrosion inner lining, the pipe needs no additional coating treatment after delivery. It saves coating materials, labor costs and shortens the overall construction period of engineering projects.
4. Energy-saving, Eco-friendly & Lower Lifecycle Cost
The smooth inner wall reduces fluid transmission resistance and cuts power consumption of delivery pumps continuously. Thanks to maintenance-free characteristics, the initial procurement cost can be offset rapidly during long-term operation with remarkable economic benefits. Meanwhile, less anti-corrosion coating usage reduces pollutant emissions, conforming to green production standards.
Application Value
This composite pipe perfectly solves the bottlenecks of high cost of full stainless steel pipes and poor corrosion resistance of ordinary carbon steel pipes. With remarkable comprehensive cost performance, it serves as an upgraded preferred pipeline product for oil & gas delivery, chemical fluid transportation, municipal water supply & drainage, ocean engineering and other long-distance conveyance systems.
