EN10225 S355G10+M Offshore Steel Grade

Gnee Steel (Tianjin) Co., Ltd. is one of the most professional EN10225 S355G10+M Offshore Steel Grade manufacturers and suppliers in China. Welcome to wholesale customized EN10225 S355G10+M Offshore Steel Grade at competitive price from our factory. Good service and quality products are available.

 

 

EN10225 S355G10+M is a high-strength, fine-grain weldable offshore structural steel supplied in the thermomechanically rolled (+M) condition in accordance with EN 10225:2009. It is specifically designed for offshore structures requiring excellent weldability, high strength, and reliable low-temperature toughness. Typical available plate thickness ranges from 10 mm to 150 mm, depending on mill production capabilities.

 

S355G10+M steel plate is widely used in offshore oil and gas platforms, offshore wind power foundations, jackets, topside structures, marine engineering facilities, and other offshore steel structures exposed to harsh marine environments. Its excellent combination of mechanical strength, weldability, and atmospheric corrosion resistance makes it a preferred material for demanding offshore construction projects worldwide.

 

 

EN10225 S355G10+M thermomechanically rolled offshore steel delivers superior practical performance for harsh marine projects compared with ordinary structural steel.

 

Excellent Weldability & Higher Construction Efficiency

S355G10+M adopts a low-impurity formula with ultra-low S and P content, avoiding welding cracks and brittleness. Its fine-grain structure lowers welding difficulty, shortens project construction cycles, and cuts on-site construction costs effectively.

 

Reliable Low-Temperature Toughness

Specially designed for low-temperature offshore environments, S355G10+M boasts excellent impact resistance and structural stability. It eliminates structural safety risks under low temperature and strong wave impact, ensuring stable operation of offshore load-bearing structures.

 

Superior Marine Corrosion Resistance & Longer Service Life

Optimized alloy composition endows the steel with strong resistance to seawater and salt spray corrosion. It greatly extends the service life of offshore wind foundations and oil & gas platform structures, reducing later maintenance and replacement costs.

 

 

1. Offshore Oil & Gas Platforms
S355G10+M steel plate is widely used in fixed offshore platforms, jackets, topside structures, and other oil and gas facilities. Its high strength, excellent weldability, and good low-temperature toughness ensure reliable performance in harsh offshore environments.

 

2. Offshore Wind Energy Structures
The steel is suitable for offshore wind turbine foundations, transition pieces, and support structures. Its mechanical properties and corrosion resistance make it an ideal choice for long-term service in marine environments.

 

3. Marine and Offshore Structures
S355G10+M is also used in various marine engineering structures, including piers, offshore terminals, and other load-bearing steel structures exposed to seawater and severe weather conditions. It provides excellent structural reliability, fabrication performance, and durability for demanding offshore applications.

 

Chemical composition of EN10225 S355G10+M steel plate (wt.%)
C	Si	Mn	P	S	Cr	Mo	Nb+V	Nb+V+Ti
0.12	0.15-0.55	1.65	0.015	0.005	0.20	0.08	0.06	0.08
Ni	Al	Cu	N	Nb	Ti	V	Cr+Mo+Ni+Cu
0.70	0.015-0.055	0.30	0.010	0.030	0.025	0.060	-

 

S355G10+M	Thickness (mm)
Thickness (mm)	≤ 16	> 16 ≤ 25	> 25 ≤ 40	> 40 ≤ 63	> 63 ≤ 100	> 100
Minimum Yield Strength (MPa)	355	355	345	335	325	325
	≤ 100						> 100
Tensile Strength (MPa)	470-630						470-630

 

 

Sufficient Spot Stock & Fast Delivery

We stock 10mm-150mm S355G10+M steel plates sufficiently. Emergency delivery is supported to guarantee project schedules and avoid construction delays.

Strict Quality Assurance

All products comply with EN10225:2009 standards. Every batch undergoes strict pre-delivery inspection with complete official and third-party certificates for global project verification and acceptance.

 

Integrated Deep Processing Service

We provide one-stop deep processing including precision cutting, bending, sandblasting and flaw detection, reducing clients' secondary processing costs and procurement cycle.

 

Rich Offshore Project Experience

We have extensive experience in supplying steel for domestic and international offshore wind, oil & gas platform and marine terminal projects, offering professional material matching and technical guidance for clients.

 

 

 

 

 

We provide EN10225 S355G10+M shipbuilding steel grades and other grades of ship plate products, to ensure the quality of factory products, if you need, please contact me.

 

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