SHANDONG SHOUYA STEEL CO., LTD.
| Delivery Time | 15-30 days |
| Payment Terms | T/T |
| Name | Bulb Flat Steel |
| Packaging Details | Standard Export Packing |
| Supply Ability | 50,0000 tons per year |
| Model Number | AH32 AH36 A Grade |
| Brand Name | Shouya |
| Certification | CE, EN |
| Place of Origin | China |
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Product Specification
| Delivery Time | 15-30 days | Payment Terms | T/T |
| Name | Bulb Flat Steel | Packaging Details | Standard Export Packing |
| Supply Ability | 50,0000 tons per year | Model Number | AH32 AH36 A Grade |
| Brand Name | Shouya | Certification | CE, EN |
| Place of Origin | China | ||
| High Light | Bulb Flat Steel AH32 ，Bulb Flat Steel AH36 ，Marine Flat Bulb Steel | ||
Marine Bulb Flat Steel for Shipbuilding Hull Stiffeners — AH32 AH36 A Grade, ABS DNV LR Certified
Our Marine Bulb Flat Steel is hot-rolled from high-quality shipbuilding steel, specifically designed as plate stiffeners for hull structures in commercial vessels, offshore platforms, and naval auxiliaries. Compared with flat bars or angle steel, bulb flats deliver higher buckling resistance at a lighter weight, and their rounded edges eliminate the need for edge grinding before painting — saving both time and cost in the shipyard.
| Width (b) | Thickness (t) | Height (h) | Theoretical Weight |
|---|---|---|---|
| 80 mm | 5 mm | 19 mm | 4.25 kg/m |
| 100 mm | 7 mm | 22.5 mm | 6.86 kg/m |
| 120 mm | 8 mm | 25 mm | 9.20 kg/m |
| 140 mm | 8 mm | 27 mm | 10.85 kg/m |
| 160 mm | 9 mm | 31 mm | 13.97 kg/m |
| 180 mm | 10 mm | 35 mm | 17.63 kg/m |
| 200 mm | 10 mm | 38 mm | 20.14 kg/m |
| 240 mm | 11 mm | 45 mm | 27.39 kg/m |
| 280 mm | 12 mm | 52 mm | 35.70 kg/m |
| 320 mm | 13 mm | 59 mm | 45.09 kg/m |
| 370 mm | 14 mm | 67.5 mm | 57.60 kg/m |
| 430 mm | 19 mm | 81 mm | — |
Standard length: 6m–16.5m. Custom cutting available.
| Strength Level | Grade | Yield Strength (min) | Classification Society Approvals |
|---|---|---|---|
| Normal Strength | A, B, D, E | 235 MPa | ABS, DNV, LR, BV, CCS, GL, KR, NK |
| High Strength | AH32 | 315 MPa | ABS, DNV, LR, BV, CCS, GL, KR, NK |
| High Strength | AH36 | 355 MPa | ABS, DNV, LR, BV, CCS, GL, KR, NK |
Mill Test Certificate EN 10204 3.1/3.2 available. All material supplied with visible heat number stamping and bundle labels for full traceability.
Weight Optimization — The bulb profile provides the same stiffening effect as an angle or flat bar at significantly reduced weight, directly improving vessel deadweight capacity.
Corrosion-Friendly Design — Rounded edges and smooth transitions eliminate sharp corners where paint tends to thin out, extending coating life and reducing maintenance costs.
High Buckling Resistance — The bulb head resists lateral buckling under compression loads far better than flat bars of equivalent weight.
Certified for Marine Use — Produced under ABS, DNV, LR, and BV approvals. Ideal for hull stiffeners, deck beams, bulkhead stiffeners, and offshore structure reinforcement.
Commercial Shipbuilding — Bulk carriers, container ships, tankers, general cargo vessels
Offshore Structures — Oil rigs, wind turbine foundations, FPSO units
Naval Auxiliaries — Frigates, sealift ships, patrol vessels
Bridge & Steel Structure — Plate stiffening in heavy steel construction
Packing: Bundled with steel wire; heat number stamped on each piece; weather-resistant bundle labels
Loading: 20GP / 40GP container or bulk vessel
Lead Time: 7–30 days depending on quantity and certification requirements
Company Details
Business Type:
Manufacturer,Agent,Exporter,Trading Company
Year Established:
2009
Total Annual:
200000000-230000000
Employee Number:
150~170
Ecer Certification：
Verified Supplier
Shandong Shouya Steel Co., Ltd. Welcome to Shandong Shouya Steel Co., Ltd., a professional steel foreign trade and steel solution provider based in Shandong, China. Founded in 2009, we leverage Shandong’s steel industrial cluster advantages and boast more than ten years of experience in... Shandong Shouya Steel Co., Ltd. Welcome to Shandong Shouya Steel Co., Ltd., a professional steel foreign trade and steel solution provider based in Shandong, China. Founded in 2009, we leverage Shandong’s steel industrial cluster advantages and boast more than ten years of experience in...
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