Applications of LR Grade B Shipbuilding Steel in Conventional Shipbuilding and Coastal Offshore Engineering

1. Major Structures of Inland Waterway and Coastal Civilian Vessels

LR Grade B shipbuilding steel plates are the core structural material for mainstream inland cargo ships, coastal bulk carriers, passenger ships, and tugboats.

They are widely used in hull bottom plates, side hull plates, deck plates, main bulkheads, and hull framework structures.

Its consistent strength and toughness enable it to withstand conventional wave impacts, hydrostatic loads, and operational vibrations, ensuring the long-term safe navigation of civilian vessels in inland waterways and conventional coastal waters.

2. Auxiliary Structures for General Coastal Offshore Platforms

In small- and medium-sized coastal offshore platforms, LR Grade B shipbuilding steel plates are used for auxiliary deck frames, guardrail structures, stair supports, and non-critical load-bearing protective structures.

For conventional coastal marine environments without extreme low-temperature or heavy-load requirements, LR Grade B shipbuilding steel plates fully meet structural safety and service life standards, effectively reducing project material costs while ensuring operational stability.

3. Coastal Engineering and Port Marine Facilities

LR Grade B shipbuilding steel plates are widely used in coastal wharf structures, port guardrails, auxiliary steel structures for breakwaters, and marine buoy infrastructure.

They are suitable for traditional coastal environments subject to salt fog corrosion and tidal cyclic loads, offering excellent structural stability and low maintenance costs.

They represent a cost-effective material choice for the construction, maintenance, and retrofitting of ports and coastal marine facilities.

4. General-Purpose Offshore Workboats and Specialized Auxiliary Vessels

LR Grade B shipbuilding steel plates are used for most structural components in various general-purpose offshore workboats, such as dredgers, rescue vessels, and offshore transport support vessels.

These vessels operate in conventional waters under moderate working conditions, where the balanced performance of LR Grade B shipbuilding steel plates fully meets their load-bearing, fatigue resistance, and fabrication requirements, supporting the mass production and cost control of workboats.

5. Auxiliary Structures for Marine Machinery and Equipment

In traditional marine machinery and equipment, LR Grade B shipbuilding steel plates are used for equipment support bases, auxiliary brackets, and protective cover structures.

Their excellent cutting, welding, and bending properties support the custom fabrication of various traditional marine equipment structures, while their stable mechanical properties ensure the long-term reliable operation of the equipment in traditional marine environments.