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DH55 EH55 FH55 Ship Steel
DH55 EH55 FH55 Marine Steel
The high-strength structural steel specified by China Classification Society is divided into four quality grades: A, B, D, and E (i.e., CCSA, CCSB, CCSC, CCSD); the high-strength structural steel specified by China Classification Society is divided into three quality grades: Strength level, four quality levels.
DH55, EH55 and FH55 are steel hull structures with good welding performance. Due to the statistics of the ship's working environment, the hull shell has to withstand the chemical corrosion, accelerated corrosion and marine life of seawater, and long-term corrosion; the hull bears greater wind and wave impact and alternating burdens; the ship's shape and structure processing methods are complex and other factors, so the need for DH55 , EH55, FH55 hull structure steel requirements are strict.
First of all, good toughness is a key requirement. In addition, corresponding strength, good corrosion resistance, welding performance, processing and forming performance and surface quality are required. In order to ensure quality and sufficient toughness, the Mn/C of the chemical composition is required to be above 2.5, there are also strict requirements for carbon equivalent, and it must be produced by a steel factory approved by the ship inspection department.
China H beam Distributors--GNEE Group
DH55 EH55 FH55 Steel Beam
DH55 EH55 FH55 mechanical:
| Steel grade |
Yield Stress |
Tensile Strength |
Elongation % |
Impact test | ||||||||
| Nominal thickness (mm) | Average energy J | |||||||||||
| ≥3≤50 | >50≤ 100 | >100≤150 | >150≤250 | ≥3≤50 | >50≤ 100 | >100≤150 | >150≤250 | T | L | T | L | |
|
DH55 EH55 FH55 |
550 | 530 | 490 | - | 640~820 | 640~820 | 590~770 | - | 16 | 18 | 37 | 55 |
China steel H beam Distributors--GNEE Group
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China H section steel Distributors--GNEE Group
We have on-line heavy duty H beam steel products, welcome to visit our company, if you have more needs and questions about other steel products, please feel free to contact us!