RINA GrB Shipbuilding Steel

RINA GrB ship steel plates are mainly used to contribute hull of ships and the cranes of break bulker and vessels in low temperature oceans. At present, several major steel companies in China have produced, and our company also can produce marine steel products of different national standards according to user needs.

RINA B shipbuilding steel Equivalent

ABS	BV	CCS	DNV	GL	KR	LR	NK	RINA
ABS B	BV B	CCS B	DNV B	GL B	KR B	LR B	NK B	RINA B

RINA B Shipbuilding Steel Chemical Requirements (%)

Grade	C max	Si max	Mn min	P max	S max	C+Mn/6
RINA B	0.21	0.35	0.60	0.035	0.035	0.40

RINA Grade B Shipbuilding Steel Tensile Requirements

Grade	Yield Strength (Mpa)	Tensile Strength (MPa)	Elongation in 8 in. [200mm] (%)	Elongation in 2 in. [50mm] (%)	Test Temperature(°C)
RINA B	235	400-520	21	24	20

RINA Grade B Shipbuilding Steel Introduction

1. The general hull structural steel grades A, B, D, and E are distinguished according to the impact temperature of the steel. The impact values of all grades of steel are the same, not according to the strength grade.
Grade A steel is the impact force subjected to normal temperature (20 ° C).
Grade B steel is the impact force at 0 °C.
Grade D steel is the impact force at -20 °C.
Grade E steel is the impact force at -40 °C.
High-strength hull structural steel can be further divided into AH32, DH32, EH32, AH36, DH36, EH36

2, high-intensity hull structure steel preheating requirements: all AH, DH, EH plate thickness greater than 30mm angle, butt joints, preheating to 120 ~ 150 °C before welding.

3, the thickness of the plate ≤ 30mm, the ambient temperature is below 5°C, preheated to 75 °C; ambient temperature below 0 °C, preheated to 75 ~ 100 °C.

4, TMCP steel (made in Japan), and it is cannot preheat before welding.

We have our own processing factory and the pre- treatment factory, pre-treatment for shipbuilding steel, Surface pretreatment line technical parameters on RINA B steel plates and profile steel. And we can also make the customers enjoy our other pre-treatment services, like cutting, welding, drilling holes by the lowest cost price. Besides, We are a professional RINA GrB Shipbuilding Steel exporter and stockist in china. Any need please feel free to contact us.