- Global Supplier of Marine Steel for Shipbuilding & Offshore Projects!
Marine angle steel (marine unequal angle steel, marine equal angle steel) is a new type of profile produced to meet the needs of large ship construction. In addition to large ships, it can also be used in marine engineering structures and demanding architectural engineering structures. Marine equal and unequal angle steel is primarily used to manufacture frame structures.
Utilizing multiple channels of advanced high-pressure descaling technology, fully meeting the technical standards of PSPC in the international shipbuilding industry.
By applying precise rolling control with surplus cutting edges, the final rolling temperature is strictly managed under the recrystallization temperature of austenite, ensuring comprehensive optimization of product performance.
Achieving excellent straightening accuracy with double and strong straightening processes, ensuring the straightness tolerance of each shipbuilding section is less than 1‰, reaching the world’s advanced level.
Independently developed intelligent inspection system for shipbuilding sections, enabling full-process monitoring and quality control of steel section production.
| Grade | C | Mn | P | S | Si | N | Cu | Cr | Ni |
|---|---|---|---|---|---|---|---|---|---|
| Q355B | 0.24 | 1.60 | 0.035 | 0.035 | 0.55 | 0.012 | 0.40 | 0.30 | 0.30 |
| Grade | Thickness (mm) | Yield Strength (Mpa) | Tensile Strength (Mpa) |
|---|---|---|---|
| Q355B | ≤16 | 355 | 477 – 630 |
✅Classification societies: ABS, LR, BV, DNV, CCS
✅Inspection & testing: Mill Test Certificate (EN 10204 3.1/3.2), ultrasonic test, third-party inspections (SGS, BV, Intertek)
✅Standards: ASTM A131, EN, GB/T
In addition to the Q355B Steel Angle Bar, we supply a wide selection of marine steel angle bars crafted from various material grades. Our range includes Q235, Q345, Q420, and Q460, each offering unique mechanical properties and advantages for different shipbuilding applications.
Q235 angle bars are valued for their cost-effectiveness and adequate strength, making them ideal for small to medium-sized vessels. Typical applications include:
With excellent weldability and formability, Q235 steel angles ensure stability and support for various onboard structures.
Q345 angle bars are known for their high strength and versatility, widely used in medium to large ships, including:
They enhance structural integrity and load-bearing capacity, delivering reliable performance in demanding marine environments.
Q420 angle bars, offering superior strength and toughness, are commonly used in heavy-duty vessels such as:
These steel angles provide exceptional support and enable vessels to withstand extreme operational stresses.
Q460 angle bars are recognized for their extreme strength and impact resistance, suitable for specialized ships operating in harsh environments:
Q460 steel angles deliver outstanding structural robustness, ensuring safe navigation through ice and durability in challenging offshore conditions.
| Size (mm) | Weight (kg/m) | Size (mm) | Weight (kg/m) |
|---|---|---|---|
| 25*3 | 1.124 | 160*10 | 24.729 |
| 25*4 | 1.459 | 160*12 | 29.391 |
| 40*3 | 1.852 | 160*14 | 33.987 |
| 40*4 | 2.422 | 200*15 | 45.3 |
| 40*5 | 2.976 | 200*16 | 48.68 |
| 63*4 | 3.907 | 200*18 | 54.401 |
| 63*5 | 4.822 | 200*24 | 71.168 |
| 63*6 | 5.721 | 200*25 | 73.6 |
| 63*8 | 7.469 | 250*18 | 68.956 |
| 100*12 | 17.898 | 250*24 | 90.433 |
| 100*16 | 23.257 | 250*26 | 97.461 |
| 125*10 | 19.133 | 250*28 | 104.422 |
| 125*12 | 22.696 | 250*32 | 118.149 |
| 125*14 | 26.193 | 250*35 | 128.271 |
| Size (mm) | Weight (kg) | Size (mm) | Weight (kg) |
|---|---|---|---|
| 45*30*4 | 2.251 | 125*80*12 | 18.33 |
| 50*32*4 | 2.494 | 140*90*8 | 14.16 |
| 63*40*6 | 3.92 | 140*90*12 | 20.724 |
| 75*50*6 | 4.808 | 160*100*12 | 23.592 |
| 90*56*8 | 7.431 | 160*100*16 | 30.835 |
| 100*63*8 | 7.55 | 180*110*10 | 22.273 |
| 100*80*8 | 10.946 | 180*110*14 | 30.589 |
| 125*75*7 | 10.7 | 200*100*10 | 23 |
| 125*75*9 | 13.6 | 200*100*12 | 27.62 |
| 125*80*7 | 11.066 | 200*100*15 | 30.04 |
Marine angle steel is mainly used for ship hull structures, deck reinforcement, bulkheads, and frame construction. It provides strength, stability, and durability in harsh marine environments.
Our marine angle steels comply with major classification societies such as ABS, LR, BV, DNV, and CCS, ensuring full compliance with international shipbuilding standards.
We supply equal and unequal marine angle steels, with sizes ranging from 25×25 mm to 200×200 mm, and thicknesses from 3 mm to 20 mm. Customized dimensions can be provided upon request.
Yes, each batch comes with mill test certificates (MTC), mechanical properties reports, and classification society certification if required.
The steels are produced with precise chemical composition control and tested for impact toughness, weldability, and corrosion resistance. For additional protection, painting, galvanizing, or coating can be applied.
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