Products FAQ

We provide one-stop value-added processing services, including precision cutting, bending, drilling, beveling, surface derusting, shot blasting, anti-corrosion treatment, and heat treatment, to meet all custom manufacturing and installation requirements for extreme-low-temperature offshore engineering projects.

Yes. All of our LR Grade D shipbuilding steel plates are fully compatible with inspections by internationally recognized third-party organizations such as SGS, BV, and DNV. They come with complete official LR certification and original factory test reports, ensuring comprehensive quality traceability.

The key difference lies in low-temperature impact resistance. LR Grade B is tested at 0°C and is suitable for temperate and mildly cold waters; LR Grade D is subject to a mandatory -20°C low-temperature impact test, offering greater cold resistance and making it suitable for cold waters and extremely cold marine environments. Both grades have the same basic tensile strength and yield strength.

Yes. All of our LR Grade D shipbuilding steel plates hold valid official certification from Lloyd’s Register (LR) and EN 10204 3.2 mill test certificates. These certificates are internationally recognized and fully support global project bidding, high-standard engineering acceptance, and cross-border customs clearance requirements.

Thickness: 5 mm - 150 mm (thicknesses ≥ 40 mm: require normalizing or TMCP heat treatment)

Width: 1,500 mm - 4,000 mm

Length: 6,000 mm - 18,000 mm

We offer custom flame-cutting or plasma-cutting services based on shipyard drawings, with cutting tolerances meeting LR rules requirements.

Yes. All of our LR Grade B shipbuilding steel plates are subject to inspection by internationally recognized third-party organizations such as SGS, BV, and DNV, and come with complete official LR certification and original Mill Test Certificate (MTC) to ensure full quality traceability.

Yes, LR Grade B marine steel is suitable for auxiliary structures on offshore platforms in temperate waters, such as pipe supports, guardrails, and secondary support members requiring low-temperature toughness. For primary load-bearing structures in extremely cold environments, it is recommended to use LR Grade D or LR Grade E marine steel.

The key difference between the two lies in their low-temperature toughness requirements and intended applications.

LR Grade A does not require a mandatory low-temperature impact test and is suitable only for mild maritime environments at normal temperatures; LR Grade B, on the other hand, must pass a low-temperature impact test at 0°C, offers superior resistance to low-temperature embrittlement, and is suitable for temperate and colder maritime environments.

While their strength and weldability are essentially equivalent, LR Grade B offers greater environmental adaptability and a higher safety margin.

LR Grade B shipbuilding steel plates are primarily used in various types of vessels operating in temperate waters, including bulk carriers, product tankers, container ships, tugs, barges, and various types of inland waterway vessels.

They are commonly used to fabricate non-critical, low-temperature load-bearing components such as hull plating, decks, bulkheads, frames, superstructures, and hull support structures.

It is also widely used in routine ship maintenance and refitting, port and terminal steel structures, auxiliary components for simple offshore engineering projects, and floating platforms.

Yes. All of our LR Grade A shipbuilding plates are fully compatible with inspections by internationally recognized third-party organizations such as SGS, BV, and DNV. They come with complete official LR certification and original factory test reports to ensure traceable quality.