Shipbuilding & Marine Steel Solutions | Marine Plate & Pipe

Steel & Alloy Supply for Shipbuilding & Marine Projects

Marine steel plate, structural sections, stainless pipe, duplex steel and nickel alloys—supplied for shipbuilding, offshore and marine engineering applications.

Application Environments

Our materials are used across ocean-going cargo vessels, container ships, bulk carriers, ship decks and hull structures, offshore platforms, floating offshore structures, ballast piping, seawater cooling systems, corrosion-resistant marine equipment, yachts and nearshore workboats. They support new shipbuilding, vessel repair and retrofit, offshore platform fabrication and marine EPC projects exposed to chloride-rich seawater, cyclic tidal loading and marine salt-spray corrosion.

Challenge Vs. How We Solve It

Pain Points

Shipbuilding materials must often be accepted by classification societies such as LR, DNV, ABS, BV and CCS. Materials without the required class documentation may not be accepted for classed hull construction, creating a high entry threshold for suppliers.

How We Solve It

Match shipbuilding materials to the required classification-society scope and supply certified shipbuilding steel grades with supporting class documentation and, where required, surveyor witness coordination.

Pain Points

Marine corrosion conditions vary significantly. Conventional hull structures may use shipbuilding steel plate, while seawater piping may require 316L or duplex stainless steel, and highly corrosive deep-sea service may require nickel-based alloys. Incorrect material selection can lead to pitting and perforation.

How We Solve It

Match material selection to the actual corrosion environment, from shipbuilding steel for hull structures to 316L stainless steel, 2205/2507 duplex steel and Alloy 825/625 for increasingly severe seawater and offshore corrosion conditions.

Pain Points

Shipyards and offshore projects often require ship plate, structural sections, stainless piping, duplex steel and nickel alloys to be delivered in multiple batches and construction stages, making procurement and delivery coordination complex.

How We Solve It

Consolidate multiple marine material categories into one sourcing program and coordinate different product types, dimensions and delivery batches around shipyard fabrication and offshore project schedules.

Pain Points

Ship plate and marine structural steel require reliable low-temperature impact toughness and crack-arrest performance, while offshore projects may also require cyclic fatigue verification. NDT, mechanical-property and impact-test records must be complete and traceable.

How We Solve It

Supply materials matched to the required toughness and structural performance, with the corresponding inspection, impact and mechanical-property documentation needed for marine and offshore project acceptance.

Pain Points

Overseas shipowner projects often require complete material certificates, classification-society surveyor witness records and traceability documentation. Missing documentation can directly delay block assembly and vessel delivery.

How We Solve It

Coordinate material certificates, class-related documentation, inspection records and traceability files with the ordered material scope to support owner review, block fabrication and final delivery milestones.

Recommended Products For Shipbuilding & Marine

Materials matched to hull construction, marine structures, seawater piping and highly corrosive offshore applications.

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Shipbuilding Steel Plate

Shipbuilding steel plate for hull shells, decks, bulkheads, bottoms and superstructures requiring reliable toughness, weldability and structural integrity in marine service.

Common Dimensions

Thickness: 6–60 mm

Width: 1500 / 1800 / 2000 / 2400 mm

Length: 6000–12000 mm

Processing: Fixed-length cutting and edge trimming available

Surface & Performance: Delivered in controlled-rolled or normalized condition. Meets -40°C low-temperature impact requirements with good crack-arrest toughness and weldability. Surface quality is controlled against lamination, delamination and heavy scale defects. Original classification-society certificates can be provided, with support for on-site surveyor witness where required.

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Marine Structural Steel

Marine structural sections including bulb flats, H-beams, angles and channels for hull frames, stiffeners and deck supports.

Common Dimensions

Bulb Flat

Size: 100×14–430×20 mm

Length: 6 m / 12 m

Marine H-Beam

Size: HN200×100–HN400×200 mm

Angle Steel

Size: ∠50–∠160

Channel Steel

Size: 8#–30#

Standard Length: 12 m

Surface & Performance:Stable sectional accuracy for hull framing and cold-bending operations. Qualified low-temperature impact performance makes these sections suitable for structural reinforcement in shipbuilding applications.

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Marine Stainless Steel Pipe

Marine stainless steel pipe for seawater cooling, freshwater systems, onboard process piping and drainage lines requiring corrosion resistance in marine environments.

Common Dimensions

Seamless Pipe

OD: 12.7–406 mm

Wall Thickness: 1.65–16 mm

Welded Pipe

OD: 21.3–610 mm

Standard Length: 6 m / 12 m

End Processing: Beveling available

Surface & Performance:Solution-annealed and pickled surface with resistance to marine salt spray and chloride pitting. Weld seams can undergo non-destructive testing, making the pipe suitable for seawater and domestic-water systems onboard vessels.

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Duplex Stainless Steel Pipe

Duplex stainless steel pipe for high-chloride seawater, ballast-water systems and offshore corrosive piping where both strength and corrosion resistance are required.

Common Dimensions

Seamless Pipe OD: 16–325 mm
Wall Thickness: 2.0–18 mm
Standard Length: 6 m / 12 m
Surface & Performance：Solution-annealed and pickled. Combines high strength with excellent resistance to chloride stress-corrosion cracking, making it suitable for seawater, ballast and offshore high-corrosion piping systems.

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Marine Nickel Base Alloy

Nickel-based corrosion-resistant materials for seawater desalination, deep-sea wellheads and highly corrosive offshore equipment.

Common Dimensions

Plate

Thickness: 3–40 mm

Seamless Pipe

OD: 12.7–325 mm

Wall Thickness: 1.65–16 mm

Surface & Performance：Designed for resistance to high-chloride environments and seawater erosion-corrosion, making these alloys suitable for deep-sea and highly corrosive offshore marine equipment components.

Applicable Standards & Main Grades

Product Category Applicable Standards / Certification Main Grades / Material Grades
Shipbuilding Steel Plate ABS; DNV; LR; BV; CCS Classification Society Certification A, B, D, E, AH36, DH36, EH36, AH40, DH40, EH40
Marine Structural Steel Classification Society Certification A, B, AH36, DH36
Marine Stainless Steel Pipe ASTM A312; EN 10216-5 304L, 316L, 317L
Duplex Stainless Steel Pipe ASTM A789; ASTM A790 S32205 (2205), S32750 (2507)
Marine Nickel Base Alloy ASTM B423; ASTM B444 Alloy 825, Alloy 625

 

MTC Certification

Projects We Have Supplied

Steel And Metal Products Delivered To Construction Projects Worldwide

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Gulf of Mexico Offshore Platform Retrofit Project

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Southeast Asia 38,000 DWT Bulk Carrier Shipbuilding Project

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