NVA420 Norway certified, AB/AQ43 American Bureau of Shipping certified offshore steel plate, AH420 s

NVA420 Norway certified, AB/AQ43 American Bureau of Shipping certified offshore steel plate, AH420 s

The continuous development of domestic shipbuilding and marine engineering steel varieties and the substantial improvement of physical quality have been able to basically meet the needs of the development of China's shipbuilding industry not only in terms of output, but also in terms of quality, and provide a solid steel foundation for China's shipbuilding industry. There are more than 50 medium and heavy plate production lines in the country, with a production capacity of 56 million tons, more than 10 sets of rolling mills above 3500mm are under construction and planned, with a new production capacity of about 15 million tons, and many production lines and equipment have reached the international first-class level, and the production capacity of medium and heavy plates will reach 70 million tons by 2010.

NVA420/AB/AQ43 ccsAH420 steel plate fixed rolling: Wuyang Steel Xiangyang

NVA420 is a Norwegian certified offshore engineering steel plate

with the same series

NVA420/D420/E420/A460/D460/E460/A500/D500/E50O/A550/D550/E550/A620/D620/E62OA690/D690/E690,AB

/AQ43 American Bureau of Shipping Certification Offshore Engineering Steel Plate:

the same series has

AB/AQ43/DQ43/EQ43/AQ47/DQ47/EQ47/AQ51/DQ51/EQ51/AQ56/DQ56/EQ56/AQ63/DQ63/EQ63/AQ70/DQ70/EQ70/EQ70

CCSAH420 is a domestic classification

The same series has:

CCSA420 / D420 / E420 / A460 / D460 / E460 / A5OO / D500 / E50O / A550 / D550 / E550 / A620 / D620 / E620 / A690 / D690 / E690

This standard is used in the manufacture of steel plates with a thickness of no more than 150mm for vessels, fishing vessels and marine engineering structures in ocean-wide, coastal and inland navigation areas.

NVA420 Steel Plate Condition: Thermomechanical Rolling (TMCP), Quenching plus Tempering (Quenching and Tempering), Thermomechanical Rolling + Tempering (TMCP+T).

With the rapid development of the national economy in the past 20 years, China's metallurgical industry has also developed rapidly. Especially in recent years, the technological progress of China's iron and steel enterprises has been rapid, and the equipment and technology have also reached the level.

From the general strength grades A, B, D and high-strength grades AH32, AH36, DH32, DH36 to E, EH32, EH36, up to the high-strength grades AH40, DH40, EH40, FH40 and ultra-high-strength steel grades 420, 460, 500, 550 steel grades, and even special ship steels (LNG ships) with higher strength requirements and -196°C impact test.

The ship steel grade has also developed from A, B, D, AH32, AH36, DH32, DH36 when CCS began to be recognized in 1994, and now the FH550 steel grade has been recognized by the nine classification societies, and the 9% Ni steel plate for cryogenic pressure vessels has also been approved by cCS, LR, DNV classification societies and the Compliance Committee.