The pipeline installation support system is a comprehensive term for a set of steel structures and supporting equipment for the installation of offshore pipelines, risers, hoisting, positioning, monitoring, and protection. It includes installation fixtures, positioning supports, underwater monitoring equipment, and temporary protective structures, providing precision control, safety protection, and attitude stability guarantees for the entire process of offshore pipeline transportation, launching, laying, and connection.

The pipeline anti-corrosion coating system is a multi-layer composite protection system specially designed for steel pipelines, risers and related components. Through a combination of external wall anti-corrosion, inner wall anti-corrosion, and special joint protection measures, it resists marine corrosion caused by seawater salt fog, immersion, erosion, and microbial attack. At the same time, some of the coatings also have functions of weight compensation, insulation, and wear resistance, ensuring the safe operation of the pipeline throughout its entire life cycle.

LSAW straight seam submerged arc welded steel pipe is a large-diameter welded steel pipe made from wide and thick steel plates through JCOE/UOE cold bending and double-sided submerged arc welding processes. It features a large pipe diameter, a wide range of wall thicknesses, high structural strength, and excellent dimensional accuracy. It is the core main material for offshore pipelines, pile foundations, risers, and platform structures, and is widely used in marine engineering fields with high pressure and high reliability requirements.

The riser system is a vertical pipeline assembly that connects the submarine pipeline with the surface platform/floating facility. It builds a fluid transportation channel between the seabed and the surface, and is divided into two categories: rigid risers and flexible risers. It integrates components such as the pipeline body, connection nodes, tensioning devices, and support structures, and is an indispensable key equipment for floating platforms and fixed platforms.

The foundation reinforcement system is a specialized structure and technology system for strengthening, preventing seepage, resisting fatigue, and preventing erosion of existing offshore pile foundations and newly constructed foundations. It achieves this through methods such as steel structure reinforcement, grouting reinforcement, anti-corrosion protection, and anti-erosion structures, aiming to enhance the overall bearing capacity, stability, and durability of the foundation. It is divided into three categories: structural reinforcement, material reinforcement, and protective reinforcement.

The foundation reinforcement system is a specialized structure and technology system for strengthening, preventing seepage, resisting fatigue, and preventing erosion of existing offshore pile foundations and newly constructed foundations. It achieves this through methods such as steel structure reinforcement, grouting reinforcement, anti-corrosion protection, and anti-erosion structures, thereby enhancing the overall bearing capacity, stability, and durability of the foundation. It is divided into three categories: structural reinforcement, material reinforcement, and protective reinforcement.

The pile driving equipment is a complete set of specialized steel structures and machinery used for precisely sinking steel pipe piles, steel sheet piles, and composite piles to the designated depth in the seabed. It includes specialized steel structure fixtures and supporting machinery for positioning, guidance, clamping, hammering, buffering, and adjustment, etc. It is the core supporting system that ensures the accuracy, safety and efficiency of offshore pile foundation construction.

The combined pile system is a composite foundation structure formed by combining two or more types of pile foundation components such as steel pipe piles and steel plate piles, and concrete piles. By leveraging the structural advantages of different pile types, it compensates for the shortcomings of single pile types in terms of bearing capacity, lateral resistance, and water sealing performance. It is an optimized pile foundation solution for complex marine geology and extreme load conditions. It includes an integrated structural system consisting of pile body combination, connection nodes, and filling reinforcement.

Steel sheet piles are plate-shaped steel components with special locking grooves. A single pile can be interlocked and spliced through the locking grooves to form a continuous and sealed retaining and water-blocking wall. They are divided into two types: hot-rolled and cold-formed. They have both temporary support and permanent structure functions and are widely used in scenarios such as anti-seepage, cofferdam construction, and foundation pit support in marine and coastal engineering.

Steel pipe piles are hollow tubular steel foundation components mainly composed of straight seam submerged arc welded pipes (LSAW) and spiral submerged arc welded pipes (SSAW). They are implanted into the seabed or land foundation through the pile sinking process and serve as the vertical core load-bearing foundation for offshore platforms, wind power facilities, and dock structures. They can be subjected to force alone or combined with other components to form composite foundations. They are one of the most widely used types of foundation piles in marine engineering.

Grouting connection is the core connection technology for offshore wind power foundations. By injecting high-strength grouting material into the annular gaps between the foundation pile and the transition section, as well as between the casing and the main leg, combined with the steel structure anchoring structure, a rigid composite connection node is formed. This achieves the core functions of load transmission, structural fixation, and vibration and seepage prevention.

The offshore wind turbine pile driving system is a complete set of steel structure supporting systems specially designed for offshore pile foundation construction. It includes steel structure components such as pile body guidance, positioning, clamping, buffering, and limiting, which are used to assist in the precise pile driving of wind turbines, correct the verticality of the pile body, and ensure the accuracy and safety of underwater pile foundation construction.