Methods of surface quality inspection for NV E40 hull structural steel plates

Methods of surface quality inspection for NV E40 hull structural steel plates

Executive Standards of our NV E40 hull structural steel plates, steel plate products: according to the user's requirements, the steel plate can be delivered according to the following standards: national standards, metallurgical industry standards, American ASTM, ASME standards, Japanese JIS, German DIN, British BS, European EN, international ISO standards and relevant standards of special plate. The ship plate can be certified by ABS LR DNV CCS BV KR NK GL RINA.

Normalizing is to heat the steel parts to 30~80℃above the critical temperature for a period of time. Then the parts are taken out of the furnace and cooled in air. Since the cooling rate of normalizing is faster than that of annealing, the strength and hardness of normalized NV E40 hull structural steel plates are higher than that of annealed NV E40 hull structural steel plates, but the elimination of internal stress is not as good as annealing. The normalizing operation of NV E40 hull structural steel plates is simple, the cost is low, the productivity is high, and it is widely used in actual production.

ABS class shipbuilding steel plate contains two kinds as common strength and high strength ship plate according to different yield and tensile strength.Common strength shipbuilding plates Grade A, B, D, E and F are mainly used to contribute hull of ship,and high strength shipbuilding plate are mainly built the cranes of bulk and breaker ships in low temperature surroundings. ABS Grade AH36, DH36, NV E40 hull structural steel plates, and EH36 plate rolling specifications range:Thickness within 3-300mm,Width within 1250-4000mm.

The company attaches great importance to logistics services, sets up our own transport truck fleet, improves customer response capacity through the improvement of logistics capacity, and further reduces costs. Customers ordering NV E40 hull structural steel plates steel from our company can not only enjoy the service of fast delivery, but also enjoy lower transportation costs. Fast, accurate, simple and efficient has always been our principle.

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